This Jupyter notebook can be downloaded from understanding_timing_models.ipynb, or viewed as a python script at understanding_timing_models.py.
Understanding Timing Models
Build a timing model starting from a par file
[1]:
from pint.models import get_model
from pint.models.timing_model import Component
import pint.config
import pint.logging
# setup logging
pint.logging.setup(level="INFO")
[1]:
1
One can build a timing model via get_model() method. This will read the par file and instantiate all the delay and phase components, using the default ordering.
[2]:
par = "B1855+09_NANOGrav_dfg+12_TAI.par"
m = get_model(pint.config.examplefile(par))
Each of the parameters in the model can be accessed as an attribute of the TimingModel object. Behind the scenes PINT figures out which component the parameter is stored in.
Each parameter has attributes like the quantity (which includes units), and a description (see the Understanding Parameters notebook for more detail)
[3]:
print(m.F0.quantity)
print(m.F0.description)
186.49408156698235 Hz
Spin-frequency
We can now explore the structure of the model
[4]:
# This gives a list of all of the component types (so far there are only delay and phase components)
m.component_types
[4]:
['PhaseComponent', 'DelayComponent']
[5]:
dir(m)
[5]:
['BINARY',
'CHI2',
'CHI2R',
'CLOCK',
'DILATEFREQ',
'DMDATA',
'DMRES',
'DelayComponent_list',
'EPHEM',
'FINISH',
'INFO',
'NTOA',
'NoiseComponent_list',
'PSR',
'PhaseComponent_list',
'RM',
'START',
'T2CMETHOD',
'TIMEEPH',
'TRACK',
'TRES',
'UNITS',
'__class__',
'__contains__',
'__delattr__',
'__dict__',
'__dir__',
'__doc__',
'__eq__',
'__format__',
'__ge__',
'__getattr__',
'__getattribute__',
'__getitem__',
'__getstate__',
'__gt__',
'__hash__',
'__init__',
'__init_subclass__',
'__iter__',
'__le__',
'__len__',
'__lt__',
'__module__',
'__ne__',
'__new__',
'__reduce__',
'__reduce_ex__',
'__repr__',
'__setattr__',
'__setitem__',
'__sizeof__',
'__str__',
'__subclasshook__',
'__weakref__',
'_locate_param_host',
'add_component',
'add_param_from_top',
'add_tzr_toa',
'as_ECL',
'as_ICRS',
'as_parfile',
'basis_funcs',
'companion_radial_velocity',
'compare',
'component_types',
'components',
'conjunction',
'covariance_matrix_funcs',
'd_delay_d_param',
'd_delay_d_param_num',
'd_dm_d_param',
'd_phase_d_delay_funcs',
'd_phase_d_param',
'd_phase_d_param_num',
'd_phase_d_toa',
'd_phase_d_tpulsar',
'd_toasigma_d_param',
'delay',
'delay_deriv_funcs',
'delay_funcs',
'delete_jump_and_flags',
'designmatrix',
'dm_covariance_matrix',
'dm_covariance_matrix_funcs',
'dm_derivs',
'dm_funcs',
'find_empty_masks',
'fittable_params',
'free_params',
'get_barycentric_toas',
'get_component_type',
'get_components_by_category',
'get_deriv_funcs',
'get_derived_params',
'get_params_dict',
'get_params_mapping',
'get_params_of_component_type',
'get_params_of_type_top',
'get_prefix_list',
'get_prefix_mapping',
'has_correlated_errors',
'has_time_correlated_errors',
'is_binary',
'items',
'jump_flags_to_params',
'keys',
'map_component',
'match_param_aliases',
'name',
'noise_model_basis_weight',
'noise_model_designmatrix',
'noise_model_dimensions',
'orbital_phase',
'param_help',
'params',
'params_ordered',
'phase',
'phase_deriv_funcs',
'phase_funcs',
'pulsar_radial_velocity',
'remove_component',
'remove_param',
'scaled_dm_uncertainty',
'scaled_dm_uncertainty_funcs',
'scaled_toa_uncertainty',
'scaled_toa_uncertainty_funcs',
'search_cmp_attr',
'set_param_uncertainties',
'set_param_values',
'setup',
'toa_covariance_matrix',
'toasigma_derivs',
'top_level_params',
'total_dispersion_slope',
'total_dm',
'use_aliases',
'validate',
'validate_component_types',
'validate_toas',
'write_parfile']
The TimingModel class stores lists of the delay model components and phase components that make up the model
[6]:
# When this list gets printed, it shows the parameters that are associated with each component as well.
m.DelayComponent_list
[6]:
[AstrometryEquatorial(
MJDParameter( POSEPOCH 49453.0000000000000000 (d) frozen=True),
floatParameter( PX 1.2288569063263406 (mas) +/- 0.21243361289239687 mas frozen=False),
AngleParameter( RAJ 18:57:36.39328840 (hourangle) +/- 0h00m00.00002603s frozen=False),
AngleParameter( DECJ 9:43:17.29196000 (deg) +/- 0d00m00.00078789s frozen=False),
floatParameter( PMRA -2.5054345161030382 (mas / yr) +/- 0.031049582610533172 mas / yr frozen=False),
floatParameter( PMDEC -5.497455863199382 (mas / yr) +/- 0.06348008663748286 mas / yr frozen=False)),
TroposphereDelay(
boolParameter( CORRECT_TROPOSPHERE N frozen=True)),
SolarSystemShapiro(
boolParameter( PLANET_SHAPIRO N frozen=True)),
SolarWindDispersion(
floatParameter( NE_SW 0.0 (1 / cm3) frozen=True),
floatParameter( SWP 2.0 () frozen=True),
floatParameter( SWM 0.0 () frozen=True)),
DispersionDM(
floatParameter( DM 13.29709 (pc / cm3) frozen=True),
floatParameter( DM1 UNSET,
MJDParameter( DMEPOCH 49453.0000000000000000 (d) frozen=True)),
DispersionDMX(
floatParameter( DMX 0.0 (pc / cm3) frozen=True),
floatParameter( DMX_0001 0.0 (pc / cm3) frozen=False),
MJDParameter( DMXR1_0001 53358.7273000000000002 (d) frozen=True),
MJDParameter( DMXR2_0001 53358.7733000000000000 (d) frozen=True),
floatParameter( DMX_0002 0.00011110286020705287 (pc / cm3) +/- 4.673570459450457e-05 pc / cm3 frozen=False),
floatParameter( DMX_0003 -4.4655555822498926e-05 (pc / cm3) +/- 4.202379265494554e-05 pc / cm3 frozen=False),
floatParameter( DMX_0004 -3.172366242454921e-05 (pc / cm3) +/- 4.222071152827488e-05 pc / cm3 frozen=False),
floatParameter( DMX_0005 -2.6615937544541525e-05 (pc / cm3) +/- 3.676165288001985e-05 pc / cm3 frozen=False),
floatParameter( DMX_0006 7.145445617437231e-05 (pc / cm3) +/- 4.374167394142721e-05 pc / cm3 frozen=False),
floatParameter( DMX_0007 7.743670274839663e-06 (pc / cm3) +/- 5.13199543963211e-05 pc / cm3 frozen=False),
floatParameter( DMX_0008 6.628314576141847e-05 (pc / cm3) +/- 3.755691800563188e-05 pc / cm3 frozen=False),
floatParameter( DMX_0009 9.960800222441839e-05 (pc / cm3) +/- 3.619457239625261e-05 pc / cm3 frozen=False),
floatParameter( DMX_0010 0.00021384397943417332 (pc / cm3) +/- 3.970891234128656e-05 pc / cm3 frozen=False),
floatParameter( DMX_0011 0.0001654914916498753 (pc / cm3) +/- 4.615618107309406e-05 pc / cm3 frozen=False),
floatParameter( DMX_0012 0.00025014821251322404 (pc / cm3) +/- 3.617384078038137e-05 pc / cm3 frozen=False),
floatParameter( DMX_0013 0.00032544283445758236 (pc / cm3) +/- 3.525448646108801e-05 pc / cm3 frozen=False),
floatParameter( DMX_0014 0.0007020949387551039 (pc / cm3) +/- 3.567637835272617e-05 pc / cm3 frozen=False),
floatParameter( DMX_0015 0.0008302906182772181 (pc / cm3) +/- 3.306863035583663e-05 pc / cm3 frozen=False),
floatParameter( DMX_0016 0.0009456692079715063 (pc / cm3) +/- 4.382957805166126e-05 pc / cm3 frozen=False),
floatParameter( DMX_0017 0.001018831160816332 (pc / cm3) +/- 3.607409255560491e-05 pc / cm3 frozen=False),
floatParameter( DMX_0018 0.0010891165860712315 (pc / cm3) +/- 4.813789826343072e-05 pc / cm3 frozen=False),
floatParameter( DMX_0019 0.0010386415586231196 (pc / cm3) +/- 4.612675176906664e-05 pc / cm3 frozen=False),
floatParameter( DMX_0020 0.0013195672245089195 (pc / cm3) +/- 4.616167182274142e-05 pc / cm3 frozen=False),
floatParameter( DMX_0021 0.0012154222610258824 (pc / cm3) +/- 4.294821352263614e-05 pc / cm3 frozen=False),
floatParameter( DMX_0022 0.0013377609996199928 (pc / cm3) +/- 4.221028001939009e-05 pc / cm3 frozen=False),
floatParameter( DMX_0023 0.0016163009324016205 (pc / cm3) +/- 5.156225843276498e-05 pc / cm3 frozen=False),
floatParameter( DMX_0024 0.0016669838878444674 (pc / cm3) +/- 6.395311039024736e-05 pc / cm3 frozen=False),
floatParameter( DMX_0025 0.0004568363556910632 (pc / cm3) +/- 4.912260448808334e-05 pc / cm3 frozen=False),
floatParameter( DMX_0026 0.0005277178068362735 (pc / cm3) +/- 4.15270457934297e-05 pc / cm3 frozen=False),
floatParameter( DMX_0027 0.0007289486445487147 (pc / cm3) +/- 4.234732022848593e-05 pc / cm3 frozen=False),
floatParameter( DMX_0028 0.001142078552606484 (pc / cm3) +/- 5.990586419386911e-05 pc / cm3 frozen=False),
floatParameter( DMX_0029 0.001105019478847692 (pc / cm3) +/- 4.148068669700297e-05 pc / cm3 frozen=False),
floatParameter( DMX_0030 0.0016917871040745575 (pc / cm3) +/- 6.46466473284041e-05 pc / cm3 frozen=False),
MJDParameter( DMXR1_0002 53420.5539999999999999 (d) frozen=True),
MJDParameter( DMXR1_0003 53448.4787000000000000 (d) frozen=True),
MJDParameter( DMXR1_0004 53477.4013000000000000 (d) frozen=True),
MJDParameter( DMXR1_0005 53532.2326000000000000 (d) frozen=True),
MJDParameter( DMXR1_0006 53603.0361000000000000 (d) frozen=True),
MJDParameter( DMXR1_0007 53628.9651000000000001 (d) frozen=True),
MJDParameter( DMXR1_0008 53686.7974000000000000 (d) frozen=True),
MJDParameter( DMXR1_0009 53715.7357000000000001 (d) frozen=True),
MJDParameter( DMXR1_0010 53750.6225000000000001 (d) frozen=True),
MJDParameter( DMXR1_0011 53798.5061000000000000 (d) frozen=True),
MJDParameter( DMXR1_0012 53851.3716000000000000 (d) frozen=True),
MJDParameter( DMXR1_0013 53891.2523000000000000 (d) frozen=True),
MJDParameter( DMXR1_0014 54043.8419000000000000 (d) frozen=True),
MJDParameter( DMXR1_0015 54092.7177000000000000 (d) frozen=True),
MJDParameter( DMXR1_0016 54135.5826000000000000 (d) frozen=True),
MJDParameter( DMXR1_0017 54519.5292000000000000 (d) frozen=True),
MJDParameter( DMXR1_0018 54569.4146000000000000 (d) frozen=True),
MJDParameter( DMXR1_0019 54678.1000000000000000 (d) frozen=True),
MJDParameter( DMXR1_0020 54819.7198000000000001 (d) frozen=True),
MJDParameter( DMXR1_0021 54862.5883999999999999 (d) frozen=True),
MJDParameter( DMXR1_0022 54925.4324000000000001 (d) frozen=True),
MJDParameter( DMXR1_0023 54981.2806000000000000 (d) frozen=True),
MJDParameter( DMXR1_0024 54998.2092000000000000 (d) frozen=True),
MJDParameter( DMXR1_0025 53926.1631000000000000 (d) frozen=True),
MJDParameter( DMXR1_0026 53968.0623000000000000 (d) frozen=True),
MJDParameter( DMXR1_0027 54008.9535000000000000 (d) frozen=True),
MJDParameter( DMXR1_0028 54177.4780000000000000 (d) frozen=True),
MJDParameter( DMXR1_0029 54472.6626000000000001 (d) frozen=True),
MJDParameter( DMXR1_0030 55108.9038000000000000 (d) frozen=True),
MJDParameter( DMXR2_0002 53420.5810999999999999 (d) frozen=True),
MJDParameter( DMXR2_0003 53448.5144999999999998 (d) frozen=True),
MJDParameter( DMXR2_0004 53477.4295000000000000 (d) frozen=True),
MJDParameter( DMXR2_0005 53532.2715000000000000 (d) frozen=True),
MJDParameter( DMXR2_0006 53603.0846000000000000 (d) frozen=True),
MJDParameter( DMXR2_0007 53628.9835000000000000 (d) frozen=True),
MJDParameter( DMXR2_0008 53686.8370000000000000 (d) frozen=True),
MJDParameter( DMXR2_0009 53715.7616999999999999 (d) frozen=True),
MJDParameter( DMXR2_0010 53750.6622000000000000 (d) frozen=True),
MJDParameter( DMXR2_0011 53798.5341000000000000 (d) frozen=True),
MJDParameter( DMXR2_0012 53851.3992000000000001 (d) frozen=True),
MJDParameter( DMXR2_0013 53891.2801000000000000 (d) frozen=True),
MJDParameter( DMXR2_0014 54043.8674000000000001 (d) frozen=True),
MJDParameter( DMXR2_0015 54092.7426000000000000 (d) frozen=True),
MJDParameter( DMXR2_0016 54135.6066000000000001 (d) frozen=True),
MJDParameter( DMXR2_0017 54519.5561999999999999 (d) frozen=True),
MJDParameter( DMXR2_0018 54569.4669000000000000 (d) frozen=True),
MJDParameter( DMXR2_0019 54678.1283000000000000 (d) frozen=True),
MJDParameter( DMXR2_0020 54819.7462000000000001 (d) frozen=True),
MJDParameter( DMXR2_0021 54862.6144999999999999 (d) frozen=True),
MJDParameter( DMXR2_0022 54925.4613000000000000 (d) frozen=True),
MJDParameter( DMXR2_0023 54981.3252000000000000 (d) frozen=True),
MJDParameter( DMXR2_0024 54998.2268000000000000 (d) frozen=True),
MJDParameter( DMXR2_0025 53926.1924000000000000 (d) frozen=True),
MJDParameter( DMXR2_0026 53968.0901000000000000 (d) frozen=True),
MJDParameter( DMXR2_0027 54008.9866000000000000 (d) frozen=True),
MJDParameter( DMXR2_0028 54177.5085999999999999 (d) frozen=True),
MJDParameter( DMXR2_0029 54472.6889000000000000 (d) frozen=True),
MJDParameter( DMXR2_0030 55108.9221000000000000 (d) frozen=True)),
BinaryDD(
floatParameter( PB 12.327171194774200418 (d) +/- 7.9493185824e-10 d frozen=False),
floatParameter( PBDOT 0.0 () frozen=True),
floatParameter( A1 9.2307804312998 (ls) +/- 3.6890718667634e-07 ls frozen=False),
floatParameter( A1DOT 0.0 (ls / s) frozen=True),
floatParameter( ECC 2.174526566823692e-05 () +/- 4.027191312623e-08 frozen=False),
floatParameter( EDOT 0.0 (1 / s) frozen=True),
MJDParameter( T0 49452.9406950773356469 (d) +/- 0.0016903183053283725 d frozen=False),
floatParameter( OM 276.55142180589701234 (deg) +/- 0.04936551005019606 deg frozen=False),
floatParameter( OMDOT 0.0 (deg / yr) frozen=True),
floatParameter( M2 0.2611131248072343 (solMass) +/- 0.02616161008932908 solMass frozen=False),
floatParameter( SINI 0.9974171733520092 () +/- 0.0018202351513085199 frozen=False),
floatParameter( FB0 UNSET,
floatParameter( A0 0.0 (s) frozen=True),
floatParameter( B0 0.0 (s) frozen=True),
floatParameter( GAMMA 0.0 (s) frozen=True),
floatParameter( DR 0.0 () frozen=True),
floatParameter( DTH 0.0 () frozen=True))]
[7]:
# Now let's look at the phase components. These include the absolute phase, the spindown model, and phase jumps
m.PhaseComponent_list
[7]:
[AbsPhase(
MJDParameter( TZRMJD 54177.5083593432625578 (d) frozen=True),
strParameter( TZRSITE ao frozen=True),
floatParameter( TZRFRQ 424.0 (MHz) frozen=True)),
Spindown(
floatParameter( F0 186.49408156698235146 (Hz) +/- 6.98911818e-12 Hz frozen=False),
MJDParameter( PEPOCH 49453.0000000000000000 (d) frozen=True),
floatParameter( F1 -6.2049547277487420583e-16 (Hz / s) +/- 1.73809343735734e-20 Hz / s frozen=False)),
PhaseJump(
maskParameter(JUMP1 -chanid asp_424 7.6456527699426e-07 +/- 0.0 s (s)),
maskParameter(JUMP2 -chanid asp_428 1.6049580247793e-06 +/- 0.0 s (s)),
maskParameter(JUMP3 -chanid asp_432 2.677273589972e-06 +/- 0.0 s (s)),
maskParameter(JUMP4 -chanid asp_436 3.0814628244857e-06 +/- 0.0 s (s)),
maskParameter(JUMP5 -chanid asp_440 4.136918843609e-06 +/- 0.0 s (s)),
maskParameter(JUMP6 -chanid asp_1382 -5.9069311360427e-05 +/- 0.0 s (s)),
maskParameter(JUMP7 -chanid asp_1386 -5.9582397512386e-05 +/- 0.0 s (s)),
maskParameter(JUMP8 -chanid asp_1390 -5.9756103518774e-05 +/- 0.0 s (s)),
maskParameter(JUMP9 -chanid asp_1394 -5.9347801609886e-05 +/- 0.0 s (s)),
maskParameter(JUMP10 -chanid asp_1398 -5.9009509604032e-05 +/- 0.0 s (s)),
maskParameter(JUMP11 -chanid asp_1402 -5.886527352183e-05 +/- 0.0 s (s)),
maskParameter(JUMP12 -chanid asp_1406 -5.9015609469307e-05 +/- 0.0 s (s)),
maskParameter(JUMP13 -chanid asp_1410 -5.8771703168481e-05 +/- 0.0 s (s)),
maskParameter(JUMP14 -chanid asp_1414 -5.8756443357489e-05 +/- 0.0 s (s)),
maskParameter(JUMP15 -chanid asp_1418 -5.8960922044628e-05 +/- 0.0 s (s)),
maskParameter(JUMP16 -chanid asp_1422 -5.8883992500888e-05 +/- 0.0 s (s)),
maskParameter(JUMP17 -chanid asp_1426 -5.8918166650158e-05 +/- 0.0 s (s)),
maskParameter(JUMP18 -chanid asp_1430 -5.8867635126778e-05 +/- 0.0 s (s)),
maskParameter(JUMP19 -chanid asp_1434 -5.9028297376503e-05 +/- 0.0 s (s)),
maskParameter(JUMP20 -chanid asp_1438 -5.9000827072833e-05 +/- 0.0 s (s)),
maskParameter(JUMP21 -chanid asp_1442 -5.8537946239722e-05 +/- 0.0 s (s)))]
We can add a component to an existing model
[8]:
from pint.models.astrometry import AstrometryEcliptic
[9]:
a = AstrometryEcliptic() # init the AstrometryEcliptic instance
[10]:
# Add the component to the model
# It will be put in the default order
# We set validate=False since we have not set the parameter values yet, which would cause validate to fail
m.add_component(a, validate=False)
[11]:
m.DelayComponent_list # The new instance is added to delay component list
[11]:
[AstrometryEquatorial(
MJDParameter( POSEPOCH 49453.0000000000000000 (d) frozen=True),
floatParameter( PX 1.2288569063263406 (mas) +/- 0.21243361289239687 mas frozen=False),
AngleParameter( RAJ 18:57:36.39328840 (hourangle) +/- 0h00m00.00002603s frozen=False),
AngleParameter( DECJ 9:43:17.29196000 (deg) +/- 0d00m00.00078789s frozen=False),
floatParameter( PMRA -2.5054345161030382 (mas / yr) +/- 0.031049582610533172 mas / yr frozen=False),
floatParameter( PMDEC -5.497455863199382 (mas / yr) +/- 0.06348008663748286 mas / yr frozen=False)),
AstrometryEcliptic(
MJDParameter( POSEPOCH UNSET,
floatParameter( PX 0.0 (mas) frozen=True),
AngleParameter( ELONG UNSET,
AngleParameter( ELAT UNSET,
floatParameter( PMELONG 0.0 (mas / yr) frozen=True),
floatParameter( PMELAT 0.0 (mas / yr) frozen=True),
strParameter( ECL IERS2010 frozen=True)),
TroposphereDelay(
boolParameter( CORRECT_TROPOSPHERE N frozen=True)),
SolarSystemShapiro(
boolParameter( PLANET_SHAPIRO N frozen=True)),
SolarWindDispersion(
floatParameter( NE_SW 0.0 (1 / cm3) frozen=True),
floatParameter( SWP 2.0 () frozen=True),
floatParameter( SWM 0.0 () frozen=True)),
DispersionDM(
floatParameter( DM 13.29709 (pc / cm3) frozen=True),
floatParameter( DM1 UNSET,
MJDParameter( DMEPOCH 49453.0000000000000000 (d) frozen=True)),
DispersionDMX(
floatParameter( DMX 0.0 (pc / cm3) frozen=True),
floatParameter( DMX_0001 0.0 (pc / cm3) frozen=False),
MJDParameter( DMXR1_0001 53358.7273000000000002 (d) frozen=True),
MJDParameter( DMXR2_0001 53358.7733000000000000 (d) frozen=True),
floatParameter( DMX_0002 0.00011110286020705287 (pc / cm3) +/- 4.673570459450457e-05 pc / cm3 frozen=False),
floatParameter( DMX_0003 -4.4655555822498926e-05 (pc / cm3) +/- 4.202379265494554e-05 pc / cm3 frozen=False),
floatParameter( DMX_0004 -3.172366242454921e-05 (pc / cm3) +/- 4.222071152827488e-05 pc / cm3 frozen=False),
floatParameter( DMX_0005 -2.6615937544541525e-05 (pc / cm3) +/- 3.676165288001985e-05 pc / cm3 frozen=False),
floatParameter( DMX_0006 7.145445617437231e-05 (pc / cm3) +/- 4.374167394142721e-05 pc / cm3 frozen=False),
floatParameter( DMX_0007 7.743670274839663e-06 (pc / cm3) +/- 5.13199543963211e-05 pc / cm3 frozen=False),
floatParameter( DMX_0008 6.628314576141847e-05 (pc / cm3) +/- 3.755691800563188e-05 pc / cm3 frozen=False),
floatParameter( DMX_0009 9.960800222441839e-05 (pc / cm3) +/- 3.619457239625261e-05 pc / cm3 frozen=False),
floatParameter( DMX_0010 0.00021384397943417332 (pc / cm3) +/- 3.970891234128656e-05 pc / cm3 frozen=False),
floatParameter( DMX_0011 0.0001654914916498753 (pc / cm3) +/- 4.615618107309406e-05 pc / cm3 frozen=False),
floatParameter( DMX_0012 0.00025014821251322404 (pc / cm3) +/- 3.617384078038137e-05 pc / cm3 frozen=False),
floatParameter( DMX_0013 0.00032544283445758236 (pc / cm3) +/- 3.525448646108801e-05 pc / cm3 frozen=False),
floatParameter( DMX_0014 0.0007020949387551039 (pc / cm3) +/- 3.567637835272617e-05 pc / cm3 frozen=False),
floatParameter( DMX_0015 0.0008302906182772181 (pc / cm3) +/- 3.306863035583663e-05 pc / cm3 frozen=False),
floatParameter( DMX_0016 0.0009456692079715063 (pc / cm3) +/- 4.382957805166126e-05 pc / cm3 frozen=False),
floatParameter( DMX_0017 0.001018831160816332 (pc / cm3) +/- 3.607409255560491e-05 pc / cm3 frozen=False),
floatParameter( DMX_0018 0.0010891165860712315 (pc / cm3) +/- 4.813789826343072e-05 pc / cm3 frozen=False),
floatParameter( DMX_0019 0.0010386415586231196 (pc / cm3) +/- 4.612675176906664e-05 pc / cm3 frozen=False),
floatParameter( DMX_0020 0.0013195672245089195 (pc / cm3) +/- 4.616167182274142e-05 pc / cm3 frozen=False),
floatParameter( DMX_0021 0.0012154222610258824 (pc / cm3) +/- 4.294821352263614e-05 pc / cm3 frozen=False),
floatParameter( DMX_0022 0.0013377609996199928 (pc / cm3) +/- 4.221028001939009e-05 pc / cm3 frozen=False),
floatParameter( DMX_0023 0.0016163009324016205 (pc / cm3) +/- 5.156225843276498e-05 pc / cm3 frozen=False),
floatParameter( DMX_0024 0.0016669838878444674 (pc / cm3) +/- 6.395311039024736e-05 pc / cm3 frozen=False),
floatParameter( DMX_0025 0.0004568363556910632 (pc / cm3) +/- 4.912260448808334e-05 pc / cm3 frozen=False),
floatParameter( DMX_0026 0.0005277178068362735 (pc / cm3) +/- 4.15270457934297e-05 pc / cm3 frozen=False),
floatParameter( DMX_0027 0.0007289486445487147 (pc / cm3) +/- 4.234732022848593e-05 pc / cm3 frozen=False),
floatParameter( DMX_0028 0.001142078552606484 (pc / cm3) +/- 5.990586419386911e-05 pc / cm3 frozen=False),
floatParameter( DMX_0029 0.001105019478847692 (pc / cm3) +/- 4.148068669700297e-05 pc / cm3 frozen=False),
floatParameter( DMX_0030 0.0016917871040745575 (pc / cm3) +/- 6.46466473284041e-05 pc / cm3 frozen=False),
MJDParameter( DMXR1_0002 53420.5539999999999999 (d) frozen=True),
MJDParameter( DMXR1_0003 53448.4787000000000000 (d) frozen=True),
MJDParameter( DMXR1_0004 53477.4013000000000000 (d) frozen=True),
MJDParameter( DMXR1_0005 53532.2326000000000000 (d) frozen=True),
MJDParameter( DMXR1_0006 53603.0361000000000000 (d) frozen=True),
MJDParameter( DMXR1_0007 53628.9651000000000001 (d) frozen=True),
MJDParameter( DMXR1_0008 53686.7974000000000000 (d) frozen=True),
MJDParameter( DMXR1_0009 53715.7357000000000001 (d) frozen=True),
MJDParameter( DMXR1_0010 53750.6225000000000001 (d) frozen=True),
MJDParameter( DMXR1_0011 53798.5061000000000000 (d) frozen=True),
MJDParameter( DMXR1_0012 53851.3716000000000000 (d) frozen=True),
MJDParameter( DMXR1_0013 53891.2523000000000000 (d) frozen=True),
MJDParameter( DMXR1_0014 54043.8419000000000000 (d) frozen=True),
MJDParameter( DMXR1_0015 54092.7177000000000000 (d) frozen=True),
MJDParameter( DMXR1_0016 54135.5826000000000000 (d) frozen=True),
MJDParameter( DMXR1_0017 54519.5292000000000000 (d) frozen=True),
MJDParameter( DMXR1_0018 54569.4146000000000000 (d) frozen=True),
MJDParameter( DMXR1_0019 54678.1000000000000000 (d) frozen=True),
MJDParameter( DMXR1_0020 54819.7198000000000001 (d) frozen=True),
MJDParameter( DMXR1_0021 54862.5883999999999999 (d) frozen=True),
MJDParameter( DMXR1_0022 54925.4324000000000001 (d) frozen=True),
MJDParameter( DMXR1_0023 54981.2806000000000000 (d) frozen=True),
MJDParameter( DMXR1_0024 54998.2092000000000000 (d) frozen=True),
MJDParameter( DMXR1_0025 53926.1631000000000000 (d) frozen=True),
MJDParameter( DMXR1_0026 53968.0623000000000000 (d) frozen=True),
MJDParameter( DMXR1_0027 54008.9535000000000000 (d) frozen=True),
MJDParameter( DMXR1_0028 54177.4780000000000000 (d) frozen=True),
MJDParameter( DMXR1_0029 54472.6626000000000001 (d) frozen=True),
MJDParameter( DMXR1_0030 55108.9038000000000000 (d) frozen=True),
MJDParameter( DMXR2_0002 53420.5810999999999999 (d) frozen=True),
MJDParameter( DMXR2_0003 53448.5144999999999998 (d) frozen=True),
MJDParameter( DMXR2_0004 53477.4295000000000000 (d) frozen=True),
MJDParameter( DMXR2_0005 53532.2715000000000000 (d) frozen=True),
MJDParameter( DMXR2_0006 53603.0846000000000000 (d) frozen=True),
MJDParameter( DMXR2_0007 53628.9835000000000000 (d) frozen=True),
MJDParameter( DMXR2_0008 53686.8370000000000000 (d) frozen=True),
MJDParameter( DMXR2_0009 53715.7616999999999999 (d) frozen=True),
MJDParameter( DMXR2_0010 53750.6622000000000000 (d) frozen=True),
MJDParameter( DMXR2_0011 53798.5341000000000000 (d) frozen=True),
MJDParameter( DMXR2_0012 53851.3992000000000001 (d) frozen=True),
MJDParameter( DMXR2_0013 53891.2801000000000000 (d) frozen=True),
MJDParameter( DMXR2_0014 54043.8674000000000001 (d) frozen=True),
MJDParameter( DMXR2_0015 54092.7426000000000000 (d) frozen=True),
MJDParameter( DMXR2_0016 54135.6066000000000001 (d) frozen=True),
MJDParameter( DMXR2_0017 54519.5561999999999999 (d) frozen=True),
MJDParameter( DMXR2_0018 54569.4669000000000000 (d) frozen=True),
MJDParameter( DMXR2_0019 54678.1283000000000000 (d) frozen=True),
MJDParameter( DMXR2_0020 54819.7462000000000001 (d) frozen=True),
MJDParameter( DMXR2_0021 54862.6144999999999999 (d) frozen=True),
MJDParameter( DMXR2_0022 54925.4613000000000000 (d) frozen=True),
MJDParameter( DMXR2_0023 54981.3252000000000000 (d) frozen=True),
MJDParameter( DMXR2_0024 54998.2268000000000000 (d) frozen=True),
MJDParameter( DMXR2_0025 53926.1924000000000000 (d) frozen=True),
MJDParameter( DMXR2_0026 53968.0901000000000000 (d) frozen=True),
MJDParameter( DMXR2_0027 54008.9866000000000000 (d) frozen=True),
MJDParameter( DMXR2_0028 54177.5085999999999999 (d) frozen=True),
MJDParameter( DMXR2_0029 54472.6889000000000000 (d) frozen=True),
MJDParameter( DMXR2_0030 55108.9221000000000000 (d) frozen=True)),
BinaryDD(
floatParameter( PB 12.327171194774200418 (d) +/- 7.9493185824e-10 d frozen=False),
floatParameter( PBDOT 0.0 () frozen=True),
floatParameter( A1 9.2307804312998 (ls) +/- 3.6890718667634e-07 ls frozen=False),
floatParameter( A1DOT 0.0 (ls / s) frozen=True),
floatParameter( ECC 2.174526566823692e-05 () +/- 4.027191312623e-08 frozen=False),
floatParameter( EDOT 0.0 (1 / s) frozen=True),
MJDParameter( T0 49452.9406950773356469 (d) +/- 0.0016903183053283725 d frozen=False),
floatParameter( OM 276.55142180589701234 (deg) +/- 0.04936551005019606 deg frozen=False),
floatParameter( OMDOT 0.0 (deg / yr) frozen=True),
floatParameter( M2 0.2611131248072343 (solMass) +/- 0.02616161008932908 solMass frozen=False),
floatParameter( SINI 0.9974171733520092 () +/- 0.0018202351513085199 frozen=False),
floatParameter( FB0 UNSET,
floatParameter( A0 0.0 (s) frozen=True),
floatParameter( B0 0.0 (s) frozen=True),
floatParameter( GAMMA 0.0 (s) frozen=True),
floatParameter( DR 0.0 () frozen=True),
floatParameter( DTH 0.0 () frozen=True))]
There are two ways to remove a component from a model. This simplest is to use the remove_component method to remove it by name.
[12]:
# We will not do this here, since we'll demonstrate a different method below.
# m.remove_component("AstrometryEcliptic")
Alternatively, you can have more control using the map_component() method, which takes either a string with component name, or a Component instance and returns a tuple containing the Component instance, its order in the relevant component list, the list of components of this type in the model, and the component type (as a string)
[13]:
component, order, from_list, comp_type = m.map_component("AstrometryEcliptic")
print("Component : ", component)
print("Type : ", comp_type)
print("Order : ", order)
print("List : ")
_ = [print(c) for c in from_list]
Component : AstrometryEcliptic(
MJDParameter( POSEPOCH UNSET,
floatParameter( PX 0.0 (mas) frozen=True),
AngleParameter( ELONG UNSET,
AngleParameter( ELAT UNSET,
floatParameter( PMELONG 0.0 (mas / yr) frozen=True),
floatParameter( PMELAT 0.0 (mas / yr) frozen=True),
strParameter( ECL IERS2010 frozen=True))
Type : DelayComponent
Order : 1
List :
AstrometryEquatorial(
MJDParameter( POSEPOCH 49453.0000000000000000 (d) frozen=True),
floatParameter( PX 1.2288569063263406 (mas) +/- 0.21243361289239687 mas frozen=False),
AngleParameter( RAJ 18:57:36.39328840 (hourangle) +/- 0h00m00.00002603s frozen=False),
AngleParameter( DECJ 9:43:17.29196000 (deg) +/- 0d00m00.00078789s frozen=False),
floatParameter( PMRA -2.5054345161030382 (mas / yr) +/- 0.031049582610533172 mas / yr frozen=False),
floatParameter( PMDEC -5.497455863199382 (mas / yr) +/- 0.06348008663748286 mas / yr frozen=False))
AstrometryEcliptic(
MJDParameter( POSEPOCH UNSET,
floatParameter( PX 0.0 (mas) frozen=True),
AngleParameter( ELONG UNSET,
AngleParameter( ELAT UNSET,
floatParameter( PMELONG 0.0 (mas / yr) frozen=True),
floatParameter( PMELAT 0.0 (mas / yr) frozen=True),
strParameter( ECL IERS2010 frozen=True))
TroposphereDelay(
boolParameter( CORRECT_TROPOSPHERE N frozen=True))
SolarSystemShapiro(
boolParameter( PLANET_SHAPIRO N frozen=True))
SolarWindDispersion(
floatParameter( NE_SW 0.0 (1 / cm3) frozen=True),
floatParameter( SWP 2.0 () frozen=True),
floatParameter( SWM 0.0 () frozen=True))
DispersionDM(
floatParameter( DM 13.29709 (pc / cm3) frozen=True),
floatParameter( DM1 UNSET,
MJDParameter( DMEPOCH 49453.0000000000000000 (d) frozen=True))
DispersionDMX(
floatParameter( DMX 0.0 (pc / cm3) frozen=True),
floatParameter( DMX_0001 0.0 (pc / cm3) frozen=False),
MJDParameter( DMXR1_0001 53358.7273000000000002 (d) frozen=True),
MJDParameter( DMXR2_0001 53358.7733000000000000 (d) frozen=True),
floatParameter( DMX_0002 0.00011110286020705287 (pc / cm3) +/- 4.673570459450457e-05 pc / cm3 frozen=False),
floatParameter( DMX_0003 -4.4655555822498926e-05 (pc / cm3) +/- 4.202379265494554e-05 pc / cm3 frozen=False),
floatParameter( DMX_0004 -3.172366242454921e-05 (pc / cm3) +/- 4.222071152827488e-05 pc / cm3 frozen=False),
floatParameter( DMX_0005 -2.6615937544541525e-05 (pc / cm3) +/- 3.676165288001985e-05 pc / cm3 frozen=False),
floatParameter( DMX_0006 7.145445617437231e-05 (pc / cm3) +/- 4.374167394142721e-05 pc / cm3 frozen=False),
floatParameter( DMX_0007 7.743670274839663e-06 (pc / cm3) +/- 5.13199543963211e-05 pc / cm3 frozen=False),
floatParameter( DMX_0008 6.628314576141847e-05 (pc / cm3) +/- 3.755691800563188e-05 pc / cm3 frozen=False),
floatParameter( DMX_0009 9.960800222441839e-05 (pc / cm3) +/- 3.619457239625261e-05 pc / cm3 frozen=False),
floatParameter( DMX_0010 0.00021384397943417332 (pc / cm3) +/- 3.970891234128656e-05 pc / cm3 frozen=False),
floatParameter( DMX_0011 0.0001654914916498753 (pc / cm3) +/- 4.615618107309406e-05 pc / cm3 frozen=False),
floatParameter( DMX_0012 0.00025014821251322404 (pc / cm3) +/- 3.617384078038137e-05 pc / cm3 frozen=False),
floatParameter( DMX_0013 0.00032544283445758236 (pc / cm3) +/- 3.525448646108801e-05 pc / cm3 frozen=False),
floatParameter( DMX_0014 0.0007020949387551039 (pc / cm3) +/- 3.567637835272617e-05 pc / cm3 frozen=False),
floatParameter( DMX_0015 0.0008302906182772181 (pc / cm3) +/- 3.306863035583663e-05 pc / cm3 frozen=False),
floatParameter( DMX_0016 0.0009456692079715063 (pc / cm3) +/- 4.382957805166126e-05 pc / cm3 frozen=False),
floatParameter( DMX_0017 0.001018831160816332 (pc / cm3) +/- 3.607409255560491e-05 pc / cm3 frozen=False),
floatParameter( DMX_0018 0.0010891165860712315 (pc / cm3) +/- 4.813789826343072e-05 pc / cm3 frozen=False),
floatParameter( DMX_0019 0.0010386415586231196 (pc / cm3) +/- 4.612675176906664e-05 pc / cm3 frozen=False),
floatParameter( DMX_0020 0.0013195672245089195 (pc / cm3) +/- 4.616167182274142e-05 pc / cm3 frozen=False),
floatParameter( DMX_0021 0.0012154222610258824 (pc / cm3) +/- 4.294821352263614e-05 pc / cm3 frozen=False),
floatParameter( DMX_0022 0.0013377609996199928 (pc / cm3) +/- 4.221028001939009e-05 pc / cm3 frozen=False),
floatParameter( DMX_0023 0.0016163009324016205 (pc / cm3) +/- 5.156225843276498e-05 pc / cm3 frozen=False),
floatParameter( DMX_0024 0.0016669838878444674 (pc / cm3) +/- 6.395311039024736e-05 pc / cm3 frozen=False),
floatParameter( DMX_0025 0.0004568363556910632 (pc / cm3) +/- 4.912260448808334e-05 pc / cm3 frozen=False),
floatParameter( DMX_0026 0.0005277178068362735 (pc / cm3) +/- 4.15270457934297e-05 pc / cm3 frozen=False),
floatParameter( DMX_0027 0.0007289486445487147 (pc / cm3) +/- 4.234732022848593e-05 pc / cm3 frozen=False),
floatParameter( DMX_0028 0.001142078552606484 (pc / cm3) +/- 5.990586419386911e-05 pc / cm3 frozen=False),
floatParameter( DMX_0029 0.001105019478847692 (pc / cm3) +/- 4.148068669700297e-05 pc / cm3 frozen=False),
floatParameter( DMX_0030 0.0016917871040745575 (pc / cm3) +/- 6.46466473284041e-05 pc / cm3 frozen=False),
MJDParameter( DMXR1_0002 53420.5539999999999999 (d) frozen=True),
MJDParameter( DMXR1_0003 53448.4787000000000000 (d) frozen=True),
MJDParameter( DMXR1_0004 53477.4013000000000000 (d) frozen=True),
MJDParameter( DMXR1_0005 53532.2326000000000000 (d) frozen=True),
MJDParameter( DMXR1_0006 53603.0361000000000000 (d) frozen=True),
MJDParameter( DMXR1_0007 53628.9651000000000001 (d) frozen=True),
MJDParameter( DMXR1_0008 53686.7974000000000000 (d) frozen=True),
MJDParameter( DMXR1_0009 53715.7357000000000001 (d) frozen=True),
MJDParameter( DMXR1_0010 53750.6225000000000001 (d) frozen=True),
MJDParameter( DMXR1_0011 53798.5061000000000000 (d) frozen=True),
MJDParameter( DMXR1_0012 53851.3716000000000000 (d) frozen=True),
MJDParameter( DMXR1_0013 53891.2523000000000000 (d) frozen=True),
MJDParameter( DMXR1_0014 54043.8419000000000000 (d) frozen=True),
MJDParameter( DMXR1_0015 54092.7177000000000000 (d) frozen=True),
MJDParameter( DMXR1_0016 54135.5826000000000000 (d) frozen=True),
MJDParameter( DMXR1_0017 54519.5292000000000000 (d) frozen=True),
MJDParameter( DMXR1_0018 54569.4146000000000000 (d) frozen=True),
MJDParameter( DMXR1_0019 54678.1000000000000000 (d) frozen=True),
MJDParameter( DMXR1_0020 54819.7198000000000001 (d) frozen=True),
MJDParameter( DMXR1_0021 54862.5883999999999999 (d) frozen=True),
MJDParameter( DMXR1_0022 54925.4324000000000001 (d) frozen=True),
MJDParameter( DMXR1_0023 54981.2806000000000000 (d) frozen=True),
MJDParameter( DMXR1_0024 54998.2092000000000000 (d) frozen=True),
MJDParameter( DMXR1_0025 53926.1631000000000000 (d) frozen=True),
MJDParameter( DMXR1_0026 53968.0623000000000000 (d) frozen=True),
MJDParameter( DMXR1_0027 54008.9535000000000000 (d) frozen=True),
MJDParameter( DMXR1_0028 54177.4780000000000000 (d) frozen=True),
MJDParameter( DMXR1_0029 54472.6626000000000001 (d) frozen=True),
MJDParameter( DMXR1_0030 55108.9038000000000000 (d) frozen=True),
MJDParameter( DMXR2_0002 53420.5810999999999999 (d) frozen=True),
MJDParameter( DMXR2_0003 53448.5144999999999998 (d) frozen=True),
MJDParameter( DMXR2_0004 53477.4295000000000000 (d) frozen=True),
MJDParameter( DMXR2_0005 53532.2715000000000000 (d) frozen=True),
MJDParameter( DMXR2_0006 53603.0846000000000000 (d) frozen=True),
MJDParameter( DMXR2_0007 53628.9835000000000000 (d) frozen=True),
MJDParameter( DMXR2_0008 53686.8370000000000000 (d) frozen=True),
MJDParameter( DMXR2_0009 53715.7616999999999999 (d) frozen=True),
MJDParameter( DMXR2_0010 53750.6622000000000000 (d) frozen=True),
MJDParameter( DMXR2_0011 53798.5341000000000000 (d) frozen=True),
MJDParameter( DMXR2_0012 53851.3992000000000001 (d) frozen=True),
MJDParameter( DMXR2_0013 53891.2801000000000000 (d) frozen=True),
MJDParameter( DMXR2_0014 54043.8674000000000001 (d) frozen=True),
MJDParameter( DMXR2_0015 54092.7426000000000000 (d) frozen=True),
MJDParameter( DMXR2_0016 54135.6066000000000001 (d) frozen=True),
MJDParameter( DMXR2_0017 54519.5561999999999999 (d) frozen=True),
MJDParameter( DMXR2_0018 54569.4669000000000000 (d) frozen=True),
MJDParameter( DMXR2_0019 54678.1283000000000000 (d) frozen=True),
MJDParameter( DMXR2_0020 54819.7462000000000001 (d) frozen=True),
MJDParameter( DMXR2_0021 54862.6144999999999999 (d) frozen=True),
MJDParameter( DMXR2_0022 54925.4613000000000000 (d) frozen=True),
MJDParameter( DMXR2_0023 54981.3252000000000000 (d) frozen=True),
MJDParameter( DMXR2_0024 54998.2268000000000000 (d) frozen=True),
MJDParameter( DMXR2_0025 53926.1924000000000000 (d) frozen=True),
MJDParameter( DMXR2_0026 53968.0901000000000000 (d) frozen=True),
MJDParameter( DMXR2_0027 54008.9866000000000000 (d) frozen=True),
MJDParameter( DMXR2_0028 54177.5085999999999999 (d) frozen=True),
MJDParameter( DMXR2_0029 54472.6889000000000000 (d) frozen=True),
MJDParameter( DMXR2_0030 55108.9221000000000000 (d) frozen=True))
BinaryDD(
floatParameter( PB 12.327171194774200418 (d) +/- 7.9493185824e-10 d frozen=False),
floatParameter( PBDOT 0.0 () frozen=True),
floatParameter( A1 9.2307804312998 (ls) +/- 3.6890718667634e-07 ls frozen=False),
floatParameter( A1DOT 0.0 (ls / s) frozen=True),
floatParameter( ECC 2.174526566823692e-05 () +/- 4.027191312623e-08 frozen=False),
floatParameter( EDOT 0.0 (1 / s) frozen=True),
MJDParameter( T0 49452.9406950773356469 (d) +/- 0.0016903183053283725 d frozen=False),
floatParameter( OM 276.55142180589701234 (deg) +/- 0.04936551005019606 deg frozen=False),
floatParameter( OMDOT 0.0 (deg / yr) frozen=True),
floatParameter( M2 0.2611131248072343 (solMass) +/- 0.02616161008932908 solMass frozen=False),
floatParameter( SINI 0.9974171733520092 () +/- 0.0018202351513085199 frozen=False),
floatParameter( FB0 UNSET,
floatParameter( A0 0.0 (s) frozen=True),
floatParameter( B0 0.0 (s) frozen=True),
floatParameter( GAMMA 0.0 (s) frozen=True),
floatParameter( DR 0.0 () frozen=True),
floatParameter( DTH 0.0 () frozen=True))
[14]:
# Now we can remove the component by directly manipulating the list
from_list.remove(component)
[15]:
m.DelayComponent_list # AstrometryEcliptic has been removed from delay list.
[15]:
[AstrometryEquatorial(
MJDParameter( POSEPOCH 49453.0000000000000000 (d) frozen=True),
floatParameter( PX 1.2288569063263406 (mas) +/- 0.21243361289239687 mas frozen=False),
AngleParameter( RAJ 18:57:36.39328840 (hourangle) +/- 0h00m00.00002603s frozen=False),
AngleParameter( DECJ 9:43:17.29196000 (deg) +/- 0d00m00.00078789s frozen=False),
floatParameter( PMRA -2.5054345161030382 (mas / yr) +/- 0.031049582610533172 mas / yr frozen=False),
floatParameter( PMDEC -5.497455863199382 (mas / yr) +/- 0.06348008663748286 mas / yr frozen=False)),
TroposphereDelay(
boolParameter( CORRECT_TROPOSPHERE N frozen=True)),
SolarSystemShapiro(
boolParameter( PLANET_SHAPIRO N frozen=True)),
SolarWindDispersion(
floatParameter( NE_SW 0.0 (1 / cm3) frozen=True),
floatParameter( SWP 2.0 () frozen=True),
floatParameter( SWM 0.0 () frozen=True)),
DispersionDM(
floatParameter( DM 13.29709 (pc / cm3) frozen=True),
floatParameter( DM1 UNSET,
MJDParameter( DMEPOCH 49453.0000000000000000 (d) frozen=True)),
DispersionDMX(
floatParameter( DMX 0.0 (pc / cm3) frozen=True),
floatParameter( DMX_0001 0.0 (pc / cm3) frozen=False),
MJDParameter( DMXR1_0001 53358.7273000000000002 (d) frozen=True),
MJDParameter( DMXR2_0001 53358.7733000000000000 (d) frozen=True),
floatParameter( DMX_0002 0.00011110286020705287 (pc / cm3) +/- 4.673570459450457e-05 pc / cm3 frozen=False),
floatParameter( DMX_0003 -4.4655555822498926e-05 (pc / cm3) +/- 4.202379265494554e-05 pc / cm3 frozen=False),
floatParameter( DMX_0004 -3.172366242454921e-05 (pc / cm3) +/- 4.222071152827488e-05 pc / cm3 frozen=False),
floatParameter( DMX_0005 -2.6615937544541525e-05 (pc / cm3) +/- 3.676165288001985e-05 pc / cm3 frozen=False),
floatParameter( DMX_0006 7.145445617437231e-05 (pc / cm3) +/- 4.374167394142721e-05 pc / cm3 frozen=False),
floatParameter( DMX_0007 7.743670274839663e-06 (pc / cm3) +/- 5.13199543963211e-05 pc / cm3 frozen=False),
floatParameter( DMX_0008 6.628314576141847e-05 (pc / cm3) +/- 3.755691800563188e-05 pc / cm3 frozen=False),
floatParameter( DMX_0009 9.960800222441839e-05 (pc / cm3) +/- 3.619457239625261e-05 pc / cm3 frozen=False),
floatParameter( DMX_0010 0.00021384397943417332 (pc / cm3) +/- 3.970891234128656e-05 pc / cm3 frozen=False),
floatParameter( DMX_0011 0.0001654914916498753 (pc / cm3) +/- 4.615618107309406e-05 pc / cm3 frozen=False),
floatParameter( DMX_0012 0.00025014821251322404 (pc / cm3) +/- 3.617384078038137e-05 pc / cm3 frozen=False),
floatParameter( DMX_0013 0.00032544283445758236 (pc / cm3) +/- 3.525448646108801e-05 pc / cm3 frozen=False),
floatParameter( DMX_0014 0.0007020949387551039 (pc / cm3) +/- 3.567637835272617e-05 pc / cm3 frozen=False),
floatParameter( DMX_0015 0.0008302906182772181 (pc / cm3) +/- 3.306863035583663e-05 pc / cm3 frozen=False),
floatParameter( DMX_0016 0.0009456692079715063 (pc / cm3) +/- 4.382957805166126e-05 pc / cm3 frozen=False),
floatParameter( DMX_0017 0.001018831160816332 (pc / cm3) +/- 3.607409255560491e-05 pc / cm3 frozen=False),
floatParameter( DMX_0018 0.0010891165860712315 (pc / cm3) +/- 4.813789826343072e-05 pc / cm3 frozen=False),
floatParameter( DMX_0019 0.0010386415586231196 (pc / cm3) +/- 4.612675176906664e-05 pc / cm3 frozen=False),
floatParameter( DMX_0020 0.0013195672245089195 (pc / cm3) +/- 4.616167182274142e-05 pc / cm3 frozen=False),
floatParameter( DMX_0021 0.0012154222610258824 (pc / cm3) +/- 4.294821352263614e-05 pc / cm3 frozen=False),
floatParameter( DMX_0022 0.0013377609996199928 (pc / cm3) +/- 4.221028001939009e-05 pc / cm3 frozen=False),
floatParameter( DMX_0023 0.0016163009324016205 (pc / cm3) +/- 5.156225843276498e-05 pc / cm3 frozen=False),
floatParameter( DMX_0024 0.0016669838878444674 (pc / cm3) +/- 6.395311039024736e-05 pc / cm3 frozen=False),
floatParameter( DMX_0025 0.0004568363556910632 (pc / cm3) +/- 4.912260448808334e-05 pc / cm3 frozen=False),
floatParameter( DMX_0026 0.0005277178068362735 (pc / cm3) +/- 4.15270457934297e-05 pc / cm3 frozen=False),
floatParameter( DMX_0027 0.0007289486445487147 (pc / cm3) +/- 4.234732022848593e-05 pc / cm3 frozen=False),
floatParameter( DMX_0028 0.001142078552606484 (pc / cm3) +/- 5.990586419386911e-05 pc / cm3 frozen=False),
floatParameter( DMX_0029 0.001105019478847692 (pc / cm3) +/- 4.148068669700297e-05 pc / cm3 frozen=False),
floatParameter( DMX_0030 0.0016917871040745575 (pc / cm3) +/- 6.46466473284041e-05 pc / cm3 frozen=False),
MJDParameter( DMXR1_0002 53420.5539999999999999 (d) frozen=True),
MJDParameter( DMXR1_0003 53448.4787000000000000 (d) frozen=True),
MJDParameter( DMXR1_0004 53477.4013000000000000 (d) frozen=True),
MJDParameter( DMXR1_0005 53532.2326000000000000 (d) frozen=True),
MJDParameter( DMXR1_0006 53603.0361000000000000 (d) frozen=True),
MJDParameter( DMXR1_0007 53628.9651000000000001 (d) frozen=True),
MJDParameter( DMXR1_0008 53686.7974000000000000 (d) frozen=True),
MJDParameter( DMXR1_0009 53715.7357000000000001 (d) frozen=True),
MJDParameter( DMXR1_0010 53750.6225000000000001 (d) frozen=True),
MJDParameter( DMXR1_0011 53798.5061000000000000 (d) frozen=True),
MJDParameter( DMXR1_0012 53851.3716000000000000 (d) frozen=True),
MJDParameter( DMXR1_0013 53891.2523000000000000 (d) frozen=True),
MJDParameter( DMXR1_0014 54043.8419000000000000 (d) frozen=True),
MJDParameter( DMXR1_0015 54092.7177000000000000 (d) frozen=True),
MJDParameter( DMXR1_0016 54135.5826000000000000 (d) frozen=True),
MJDParameter( DMXR1_0017 54519.5292000000000000 (d) frozen=True),
MJDParameter( DMXR1_0018 54569.4146000000000000 (d) frozen=True),
MJDParameter( DMXR1_0019 54678.1000000000000000 (d) frozen=True),
MJDParameter( DMXR1_0020 54819.7198000000000001 (d) frozen=True),
MJDParameter( DMXR1_0021 54862.5883999999999999 (d) frozen=True),
MJDParameter( DMXR1_0022 54925.4324000000000001 (d) frozen=True),
MJDParameter( DMXR1_0023 54981.2806000000000000 (d) frozen=True),
MJDParameter( DMXR1_0024 54998.2092000000000000 (d) frozen=True),
MJDParameter( DMXR1_0025 53926.1631000000000000 (d) frozen=True),
MJDParameter( DMXR1_0026 53968.0623000000000000 (d) frozen=True),
MJDParameter( DMXR1_0027 54008.9535000000000000 (d) frozen=True),
MJDParameter( DMXR1_0028 54177.4780000000000000 (d) frozen=True),
MJDParameter( DMXR1_0029 54472.6626000000000001 (d) frozen=True),
MJDParameter( DMXR1_0030 55108.9038000000000000 (d) frozen=True),
MJDParameter( DMXR2_0002 53420.5810999999999999 (d) frozen=True),
MJDParameter( DMXR2_0003 53448.5144999999999998 (d) frozen=True),
MJDParameter( DMXR2_0004 53477.4295000000000000 (d) frozen=True),
MJDParameter( DMXR2_0005 53532.2715000000000000 (d) frozen=True),
MJDParameter( DMXR2_0006 53603.0846000000000000 (d) frozen=True),
MJDParameter( DMXR2_0007 53628.9835000000000000 (d) frozen=True),
MJDParameter( DMXR2_0008 53686.8370000000000000 (d) frozen=True),
MJDParameter( DMXR2_0009 53715.7616999999999999 (d) frozen=True),
MJDParameter( DMXR2_0010 53750.6622000000000000 (d) frozen=True),
MJDParameter( DMXR2_0011 53798.5341000000000000 (d) frozen=True),
MJDParameter( DMXR2_0012 53851.3992000000000001 (d) frozen=True),
MJDParameter( DMXR2_0013 53891.2801000000000000 (d) frozen=True),
MJDParameter( DMXR2_0014 54043.8674000000000001 (d) frozen=True),
MJDParameter( DMXR2_0015 54092.7426000000000000 (d) frozen=True),
MJDParameter( DMXR2_0016 54135.6066000000000001 (d) frozen=True),
MJDParameter( DMXR2_0017 54519.5561999999999999 (d) frozen=True),
MJDParameter( DMXR2_0018 54569.4669000000000000 (d) frozen=True),
MJDParameter( DMXR2_0019 54678.1283000000000000 (d) frozen=True),
MJDParameter( DMXR2_0020 54819.7462000000000001 (d) frozen=True),
MJDParameter( DMXR2_0021 54862.6144999999999999 (d) frozen=True),
MJDParameter( DMXR2_0022 54925.4613000000000000 (d) frozen=True),
MJDParameter( DMXR2_0023 54981.3252000000000000 (d) frozen=True),
MJDParameter( DMXR2_0024 54998.2268000000000000 (d) frozen=True),
MJDParameter( DMXR2_0025 53926.1924000000000000 (d) frozen=True),
MJDParameter( DMXR2_0026 53968.0901000000000000 (d) frozen=True),
MJDParameter( DMXR2_0027 54008.9866000000000000 (d) frozen=True),
MJDParameter( DMXR2_0028 54177.5085999999999999 (d) frozen=True),
MJDParameter( DMXR2_0029 54472.6889000000000000 (d) frozen=True),
MJDParameter( DMXR2_0030 55108.9221000000000000 (d) frozen=True)),
BinaryDD(
floatParameter( PB 12.327171194774200418 (d) +/- 7.9493185824e-10 d frozen=False),
floatParameter( PBDOT 0.0 () frozen=True),
floatParameter( A1 9.2307804312998 (ls) +/- 3.6890718667634e-07 ls frozen=False),
floatParameter( A1DOT 0.0 (ls / s) frozen=True),
floatParameter( ECC 2.174526566823692e-05 () +/- 4.027191312623e-08 frozen=False),
floatParameter( EDOT 0.0 (1 / s) frozen=True),
MJDParameter( T0 49452.9406950773356469 (d) +/- 0.0016903183053283725 d frozen=False),
floatParameter( OM 276.55142180589701234 (deg) +/- 0.04936551005019606 deg frozen=False),
floatParameter( OMDOT 0.0 (deg / yr) frozen=True),
floatParameter( M2 0.2611131248072343 (solMass) +/- 0.02616161008932908 solMass frozen=False),
floatParameter( SINI 0.9974171733520092 () +/- 0.0018202351513085199 frozen=False),
floatParameter( FB0 UNSET,
floatParameter( A0 0.0 (s) frozen=True),
floatParameter( B0 0.0 (s) frozen=True),
floatParameter( GAMMA 0.0 (s) frozen=True),
floatParameter( DR 0.0 () frozen=True),
floatParameter( DTH 0.0 () frozen=True))]
To switch the order of a component, just change the order of the component list
NB: that this should almost never be done! In most cases the default order of the delay components is correct. Experts only!
[16]:
# Let's look at the order of the components in the delay list first
_ = [print(dc.__class__) for dc in m.DelayComponent_list]
<class 'pint.models.astrometry.AstrometryEquatorial'>
<class 'pint.models.troposphere_delay.TroposphereDelay'>
<class 'pint.models.solar_system_shapiro.SolarSystemShapiro'>
<class 'pint.models.solar_wind_dispersion.SolarWindDispersion'>
<class 'pint.models.dispersion_model.DispersionDM'>
<class 'pint.models.dispersion_model.DispersionDMX'>
<class 'pint.models.binary_dd.BinaryDD'>
[17]:
# Now let's swap the order of DispersionDMX and Dispersion
component, order, from_list, comp_type = m.map_component("DispersionDMX")
new_order = 3
from_list[order], from_list[new_order] = from_list[new_order], from_list[order]
[18]:
# Print the classes to see the order switch
_ = [print(dc.__class__) for dc in m.DelayComponent_list]
<class 'pint.models.astrometry.AstrometryEquatorial'>
<class 'pint.models.troposphere_delay.TroposphereDelay'>
<class 'pint.models.solar_system_shapiro.SolarSystemShapiro'>
<class 'pint.models.dispersion_model.DispersionDMX'>
<class 'pint.models.dispersion_model.DispersionDM'>
<class 'pint.models.solar_wind_dispersion.SolarWindDispersion'>
<class 'pint.models.binary_dd.BinaryDD'>
Delays are always computed in the order of the DelayComponent_list
[19]:
# First get the toas
from pint.toa import get_TOAs
t = get_TOAs(pint.config.examplefile("B1855+09_NANOGrav_dfg+12.tim"), model=m)
[20]:
# compute the total delay
total_delay = m.delay(t)
total_delay
[20]:
$[386.46308,~292.74495,~123.64676,~\dots,~-325.92845,~-401.67721,~-41.33315] \; \mathrm{s}$
One can get the delay up to some component. For example, if you want the delay computation stop after the Solar System Shapiro delay.
By default the delay of the specified component is included. This can be changed by the keyword parameter include_last=False.
[21]:
to_jump_delay = m.delay(t, cutoff_component="SolarSystemShapiro")
to_jump_delay
[21]:
$[392.26834,~299.04792,~129.09853,~\dots,~-335.16783,~-395.83023,~-36.454998] \; \mathrm{s}$
Here is a list of all the Component types that PINT knows about
[22]:
Component.component_types
[22]:
{'AbsPhase': pint.models.absolute_phase.AbsPhase,
'AstrometryEquatorial': pint.models.astrometry.AstrometryEquatorial,
'AstrometryEcliptic': pint.models.astrometry.AstrometryEcliptic,
'BinaryBT': pint.models.binary_bt.BinaryBT,
'BinaryBTPiecewise': pint.models.binary_bt.BinaryBTPiecewise,
'BinaryDD': pint.models.binary_dd.BinaryDD,
'BinaryDDS': pint.models.binary_dd.BinaryDDS,
'BinaryDDGR': pint.models.binary_dd.BinaryDDGR,
'BinaryDDH': pint.models.binary_dd.BinaryDDH,
'BinaryDDK': pint.models.binary_ddk.BinaryDDK,
'BinaryELL1': pint.models.binary_ell1.BinaryELL1,
'BinaryELL1H': pint.models.binary_ell1.BinaryELL1H,
'BinaryELL1k': pint.models.binary_ell1.BinaryELL1k,
'DispersionDM': pint.models.dispersion_model.DispersionDM,
'DispersionDMX': pint.models.dispersion_model.DispersionDMX,
'DispersionJump': pint.models.dispersion_model.DispersionJump,
'FDJumpDM': pint.models.dispersion_model.FDJumpDM,
'DMWaveX': pint.models.dmwavex.DMWaveX,
'FD': pint.models.frequency_dependent.FD,
'Glitch': pint.models.glitch.Glitch,
'PhaseOffset': pint.models.phase_offset.PhaseOffset,
'PiecewiseSpindown': pint.models.piecewise.PiecewiseSpindown,
'IFunc': pint.models.ifunc.IFunc,
'PhaseJump': pint.models.jump.PhaseJump,
'ScaleToaError': pint.models.noise_model.ScaleToaError,
'ScaleDmError': pint.models.noise_model.ScaleDmError,
'EcorrNoise': pint.models.noise_model.EcorrNoise,
'PLDMNoise': pint.models.noise_model.PLDMNoise,
'PLRedNoise': pint.models.noise_model.PLRedNoise,
'SolarSystemShapiro': pint.models.solar_system_shapiro.SolarSystemShapiro,
'SolarWindDispersion': pint.models.solar_wind_dispersion.SolarWindDispersion,
'SolarWindDispersionX': pint.models.solar_wind_dispersion.SolarWindDispersionX,
'Spindown': pint.models.spindown.Spindown,
'FDJump': pint.models.fdjump.FDJump,
'TroposphereDelay': pint.models.troposphere_delay.TroposphereDelay,
'Wave': pint.models.wave.Wave,
'WaveX': pint.models.wavex.WaveX}
When PINT builds a model from a par file, it has to infer what components to include in the model. This is done by the component_special_params of each Component. A component will be instantiated when one of its special parameters is present in the par file.
[23]:
from collections import defaultdict
special = defaultdict(list)
for comp, tp in Component.component_types.items():
for p in tp().component_special_params:
special[p].append(comp)
special
[23]:
defaultdict(list,
{'RAJ': ['AstrometryEquatorial'],
'DECJ': ['AstrometryEquatorial'],
'PMRA': ['AstrometryEquatorial'],
'PMDEC': ['AstrometryEquatorial'],
'RA': ['AstrometryEquatorial'],
'DEC': ['AstrometryEquatorial'],
'ELONG': ['AstrometryEcliptic'],
'ELAT': ['AstrometryEcliptic'],
'PMELONG': ['AstrometryEcliptic'],
'PMELAT': ['AstrometryEcliptic'],
'LAMBDA': ['AstrometryEcliptic'],
'BETA': ['AstrometryEcliptic'],
'PMLAMBDA': ['AstrometryEcliptic'],
'PMBETA': ['AstrometryEcliptic'],
'DMX_0001': ['DispersionDMX'],
'DMXR1_0001': ['DispersionDMX'],
'DMXR2_0001': ['DispersionDMX'],
'DMWXFREQ_0001': ['DMWaveX'],
'DMWXSIN_0001': ['DMWaveX'],
'DMWXCOS_0001': ['DMWaveX'],
'NE_SW': ['SolarWindDispersion'],
'SWM': ['SolarWindDispersion'],
'SWP': ['SolarWindDispersion'],
'NE1AU': ['SolarWindDispersion'],
'SOLARN0': ['SolarWindDispersion'],
'SWXDM_0001': ['SolarWindDispersionX'],
'SWXP_0001': ['SolarWindDispersionX'],
'SWXR1_0001': ['SolarWindDispersionX'],
'SWXR2_0001': ['SolarWindDispersionX'],
'WXFREQ_0001': ['WaveX'],
'WXSIN_0001': ['WaveX'],
'WXCOS_0001': ['WaveX']})