The sherpa.astro.xspec module

Support for XSPEC models.

Sherpa supports versions 12.15.0, 12.14.1, 12.14.0, 12.13.1, 12.13.0, 12.12.1, and 12.12.0 of XSPEC [1], and can be built against the model library or the full application. There is no guarantee of support for older or newer versions of XSPEC.

To be able to use most routines from this module, the HEADAS environment variable must be set. The get_xsversion function can be used to return the XSPEC version - including patch level - the module is using:

>>> from sherpa.astro import xspec
>>> xspec.get_xsversion()
'12.14.1d'

Initializing XSPEC

The XSPEC model library is initialized so that the cosmology parameters are set to H_0=70, q_0=0.0, and lambda_0=0.73 (they can be changed with set_xscosmo).

The other settings - for example for the abundance and cross-section tables - follow the standard rules for XSPEC. This means that the values are taken from the user’s XSPEC configuration file - either ~/.xspec/Xspec.init or $HEADAS/../spectral/manager/Xspec.init - for these settings (in particular note that the default value for the photo-ionization table is ‘vern’ rather than ‘bcmc’ which used to be the case in XSPEC 12.10.0 and earlier).

The default chatter setting - used by models to inform users of issues - was set to 0 (which hid the messages) until Sherpa 4.14.0, when it was changed to 10 (to match XSPEC).

Supported models

The additive [2], multiplicative [3], and convolution [4] models from the XSPEC model library are supported, except for the polconst, pollin, polpow, and smaug models [5], since they need information obtained from the XFLT keywords in the PHA file.

XSPEC version

The intention is to keep the model parameters up to date with the highest-supported version of XSPEC. However, there is no way to know from the XSPEC API [6] whether these parameter values will work correctly with the installed XSPEC version, such as when using an older version of XSPEC.

Parameter values

XSPEC parameters have soft and hard limits but they are different to the Sherpa meaning:

  • the XSPEC hard limit is more-like a Sherpa parameter with the same soft and hard limits;

  • and it is possible to change the hard limits.

To support these, XSPEC models use the XSBaseParameter and XSParameter classes, while the “norm” parameter added to additive models remains a sherpa.models.parameter.Parameter instance.

References

Classes

XSSSS_ice([name])

The XSPEC sss_ice model: Einstein SSS ice absorption.

XSTBabs([name])

The XSPEC TBabs model: ISM grain absorption.

XSTBfeo([name])

The XSPEC TBfeo model: ISM grain absorption.

XSTBgas([name])

The XSPEC TBgas model: ISM grain absorption.

XSTBgrain([name])

The XSPEC TBgrain model: ISM grain absorption.

XSTBpcf([name])

The XSPEC TBpcf model: ISM grain absorption.

XSTBrel([name])

The XSPEC TBrel model: ISM grain absorption.

XSTBvarabs([name])

The XSPEC TBvarabs model: ISM grain absorption.

XSabsori([name])

The XSPEC absori model: ionized absorber.

XSacisabs([name])

The XSPEC acisabs model: Chandra ACIS q.e.

XSagauss([name])

The XSPEC agauss model: gaussian line profile in wavelength space.

XSagnsed([name])

The XSPEC agnsed model: AGN SED model

XSagnslim([name])

The XSPEC agnslim model: AGN super-Eddington accretion model

XSapec([name])

The XSPEC apec model: APEC emission spectrum.

XSbapec([name])

The XSPEC bapec model: velocity broadened APEC thermal plasma model.

XSbbody([name])

The XSPEC bbody model: blackbody spectrum.

XSbbodyrad([name])

The XSPEC bbodyrad model: blackbody spectrum, area normalized.

XSbcempow([name])

The XSPEC bcempow model: plasma emission, multi-temperature using a power-law emission measure

XSbcheb6([name])

The XSPEC bcheb6 model: differential emission measure using 6-order Chebyshev polynomial.

XSbcie([name])

The XSPEC bcie model: Emission spectrum from a plasma in Collisional-ionization equilibrium.

XSbcoolflow([name])

The XSPEC bcoolflow model: cooling flow, mekal.

XSbcph([name])

The XSPEC bcph model: Cooling + heating model for cool core clusters.

XSbequil([name])

The XSPEC bequil model: collisional plasma, ionization equilibrium,

XSbexpcheb6([name])

The XSPEC bexpcheb6 model: differential emission measure using exponential of a 6-order Chebyshev polynomial.

XSbexrav([name])

The XSPEC bexrav model: reflected e-folded broken power law, neutral medium.

XSbexriv([name])

The XSPEC bexriv model: reflected e-folded broken power law, ionized medium.

XSbgadem([name])

The XSPEC bgadem model: plasma emission, multi-temperature with gaussian distribution of emission measure.

XSbgnei([name])

The XSPEC bgnei model: collisional plasma, non-equilibrium, temperature evolution.

XSbkn2pow([name])

The XSPEC bkn2pow model: broken power law with two breaks.

XSbknpower([name])

The XSPEC bknpower model: broken power law.

XSbmc([name])

The XSPEC bmc model: Comptonization by relativistic matter.

XSbnei([name])

The XSPEC bnei model: collisional plasma, non-equilibrium, constant temperature.

XSbnpshock([name])

The XSPEC bnpshock model: shocked plasma, plane parallel, separate ion, electron temperatures.

XSbpshock([name])

The XSPEC bpshock model: plane-parallel shocked plasma, constant temperature.

XSbremss([name])

The XSPEC bremss model: thermal bremsstrahlung.

XSbrnei([name])

The XSPEC brnei model: velocity-broadened non-equilibrium recombining collisional plasma.

XSbsedov([name])

The XSPEC bsedov model: sedov model, separate ion/electron temperature.

XSbsnapec([name])

The XSPEC snapec model: galaxy cluster spectrum using SN yields.

XSbtapec([name])

The XSPEC btapec model: velocity broadened APEC emission spectrum with separate continuum and line temperatures.

XSbvapec([name])

The XSPEC bvapec model: velocity broadened APEC thermal plasma model.

XSbvcempow([name])

The XSPEC bvcempow model: plasma emission, multi-temperature using a power-law emission measure.

XSbvcheb6([name])

The XSPEC bvcheb6 model: differential emission measure using 6-order Chebyshev polynomial.

XSbvcie([name])

The XSPEC bvcie model: Emission spectrum from a plasma in Collisional-ionization equilibrium.

XSbvcoolflow([name])

The XSPEC bvcoolflow model: cooling flow, mekal.

XSbvcph([name])

The XSPEC bvcph model: Cooling + heating model for cool core clusters.

XSbvequil([name])

The XSPEC bvequil model: collisional plasma, ionization equilibrium,

XSbvexpcheb6([name])

The XSPEC bvexpcheb6 model: differential emission measure using exponential of a 6-order Chebyshev polynomial.

XSbvgadem([name])

The XSPEC bvgadem model: plasma emission, multi-temperature with gaussian distribution of emission measure.

XSbvgnei([name])

The XSPEC bvgnei model: collisional plasma, non-equilibrium, temperature evolution.

XSbvnei([name])

The XSPEC bvnei model: collisional plasma, non-equilibrium, constant temperature.

XSbvnpshock([name])

The XSPEC bvnpshock model: shocked plasma, plane parallel, separate ion, electron temperatures.

XSbvpshock([name])

The XSPEC bvpshock model: plane-parallel shocked plasma, constant temperature.

XSbvrnei([name])

The XSPEC bvrnei model: velocity-broadened non-equilibrium recombining collisional plasma.

XSbvsedov([name])

The XSPEC bvsedov model: sedov model, separate ion/electron temperature.

XSbvtapec([name])

The XSPEC bvtapec model: velocity broadened APEC emission spectrum with separate continuum and line temperatures.

XSbvvapec([name])

The XSPEC bvvapec model: velocity broadened APEC thermal plasma model.

XSbvvcie([name])

The XSPEC bvvcie model: Emission spectrum from a plasma in Collisional-ionization equilibrium.

XSbvvgadem([name])

The XSPEC bvvgadem model: plasma emission, multi-temperature with gaussian distribution of emission measure.

XSbvvgnei([name])

The XSPEC bvvgnei model: collisional plasma, non-equilibrium, temperature evolution.

XSbvvnei([name])

The XSPEC bvvnei model: collisional plasma, non-equilibrium, constant temperature.

XSbvvnpshock([name])

The XSPEC bvvnpshock model: shocked plasma, plane parallel, separate ion, electron temperatures.

XSbvvpshock([name])

The XSPEC bvvpshock model: plane-parallel shocked plasma, constant temperature.

XSbvvrnei([name])

The XSPEC bvvrnei model: velocity-broadened non-equilibrium recombining collisional plasma.

XSbvvsedov([name])

The XSPEC bvvsedov model: sedov model, separate ion/electron temperature.

XSbvvtapec([name])

The XSPEC bvvtapec model: velocity broadened APEC emission spectrum with separate continuum and line temperatures.

XSbvvwdem([name])

The XSPEC bvvwdem model: plasma emission, multi-temperature with power-law distribution of emission measure.

XSbvwdem([name])

The XSPEC bvwdem model: plasma emission, multi-temperature with power-law distribution of emission measure.

XSbwcycl([name])

The XSPEC bwcycl model: Becker-Wolff self-consistent cyclotron line model.

XSbwdem([name])

The XSPEC bwdem model: plasma emission, multi-temperature with power-law distribution of emission measure.

XSc6mekl([name])

The XSPEC c6mekl model: differential emission measure using Chebyshev representations with multi-temperature mekal.

XSc6pmekl([name])

The XSPEC c6pmekl model: differential emission measure using Chebyshev representations with multi-temperature mekal.

XSc6pvmkl([name])

The XSPEC c6pvmkl model: differential emission measure using Chebyshev representations with multi-temperature mekal.

XSc6vmekl([name])

The XSPEC c6vmekl model: differential emission measure using Chebyshev representations with multi-temperature mekal.

XScabs([name])

The XSPEC cabs model: Optically-thin Compton scattering.

XScarbatm([name])

The XSPEC carbatm model: Nonmagnetic carbon atmosphere of a neutron star.

XScemekl([name])

The XSPEC cemekl model: plasma emission, multi-temperature using mekal.

XScempow([name])

The XSPEC cempow model: plasma emission, multi-temperature using a power-law emission measure.

XScevmkl([name])

The XSPEC cevmkl model: plasma emission, multi-temperature using mekal.

XScflow([name])

The XSPEC cflow model: cooling flow.

XScflux([name])

The XSPEC cflux convolution model: calculate flux

XScglumin([name])

The XSPEC cglumin convolution model: calculate luminosity

XScheb6([name])

The XSPEC cheb6 model: differential emission measure using 6-order Chebyshev polynomial.

XScie([name])

The XSPEC cie model: Emission spectrum from a plasma in Collisional-ionization equilibrium.

XSclumin([name])

The XSPEC clumin convolution model: calculate luminosity

XScompLS([name])

The XSPEC compLS model: Comptonization, Lamb & Sanford.

XScompPS([name])

The XSPEC compPS model: Comptonization, Poutanen & Svenson.

XScompST([name])

The XSPEC compST model: Comptonization, Sunyaev & Titarchuk.

XScompTT([name])

The XSPEC compTT model: Comptonization, Titarchuk.

XScompbb([name])

The XSPEC compbb model: Comptonization, black body.

XScompmag([name])

The XSPEC compmag model: Thermal and bulk Comptonization for cylindrical accretion onto the polar cap of a magnetized neutron star.

XScomptb([name])

The XSPEC comptb model: Thermal and bulk Comptonization of a seed blackbody-like spectrum.

XScompth([name])

The XSPEC compth model: Paolo Coppi's hybrid (thermal/non-thermal) hot plasma emission models.

XSconstant([name])

The XSPEC constant model: energy-independent factor.

XScoolflow([name])

The XSPEC coolflow model: cooling flow, mekal.

XScpflux([name])

The XSPEC cpflux convolution model: calculate photon flux

XScph([name])

The XSPEC cph model: Cooling + heating model for cool core clusters

XScplinear([name])

The XSPEC cplinear model: a non-physical piecewise-linear model for low count background spectra.

XScutoffpl([name])

The XSPEC cutoffpl model: power law, high energy exponential cutoff.

XScyclabs([name])

The XSPEC cyclabs model: absorption line, cyclotron.

XSdisk([name])

The XSPEC disk model: accretion disk, black body.

XSdiskbb([name])

The XSPEC diskbb model: accretion disk, multi-black body components.

XSdiskir([name])

The XSPEC diskir model: Irradiated inner and outer disk.

XSdiskline([name])

The XSPEC diskline model: accretion disk line emission, relativistic.

XSdiskm([name])

The XSPEC diskm model: accretion disk with gas pressure viscosity.

XSdisko([name])

The XSPEC disko model: accretion disk, inner, radiation pressure viscosity.

XSdiskpbb([name])

The XSPEC diskpbb model: accretion disk, power-law dependence for T(r).

XSdiskpn([name])

The XSPEC diskpn model: accretion disk, black hole, black body.

XSdust([name])

The XSPEC dust model: dust scattering.

XSedge([name])

The XSPEC edge model: absorption edge.

XSeebremss([name])

The XSPEC eebremss model: electron-electron bremsstrahlung spectrum.

XSeplogpar([name])

The XSPEC eplogpar model: log-parabolic blazar model with nu-Fnu normalization.

XSeqpair([name])

The XSPEC eqpair model: Paolo Coppi's hybrid (thermal/non-thermal) hot plasma emission models.

XSeqtherm([name])

The XSPEC eqtherm model: Paolo Coppi's hybrid (thermal/non-thermal) hot plasma emission models.

XSequil([name])

The XSPEC equil model: collisional plasma, ionization equilibrium.

XSexpabs([name])

The XSPEC expabs model: exponential roll-off at low E.

XSexpcheb6([name])

The XSPEC expcheb6 model: differential emission measure using exponential of a 6-order Chebyshev polynomial.

XSexpdec([name])

The XSPEC expdec model: exponential decay.

XSexpfac([name])

The XSPEC expfac model: exponential modification.

XSezdiskbb([name])

The XSPEC ezdiskbb model: multiple blackbody disk model with zero-torque inner boundary.

XSfeklor([name])

The XSPEC feklor model: Fe K fluourescence line at high resolution

XSgabs([name])

The XSPEC gabs model: gaussian absorption line.

XSgadem([name])

The XSPEC gadem model: plasma emission, multi-temperature with gaussian distribution of emission measure.

XSgaussian([name])

The XSPEC gaussian model: gaussian line profile.

XSgnei([name])

The XSPEC gnei model: collisional plasma, non-equilibrium, temperature evolution.

XSgrad([name])

The XSPEC grad model: accretion disk, Schwarzschild black hole.

XSgrbcomp([name])

The XSPEC grbcomp model: Comptonization for GRB prompt emission.

XSgrbjet([name])

The XSPEC grbjet model: Two-phase Comptonization model of soft thermal seed photons for GRB prompt emission

XSgrbm([name])

The XSPEC grbm model: gamma-ray burst continuum.

XSgsmooth([name])

The XSPEC gsmooth convolution model: gaussian smoothing

XShatm([name])

The XSPEC hatm model: Nonmagnetic hydrogen atmosphere of a neutron star.

XSheilin([name])

The XSPEC heilin model: Voigt absorption profiles for He I series.

XShighecut([name])

The XSPEC highecut model: high-energy cutoff.

XShrefl([name])

The XSPEC hrefl model: reflection model.

XSireflect([name])

The XSPEC ireflect convolution model: reflection from ionized material

XSismabs([name])

The XSPEC ismabs model: A high resolution ISM absorption model with variable columns for individual ions.

XSismdust([name])

The XSPEC ismdust model: Extinction due to a power-law distribution of dust grains.

XSjet([name])

The XSPEC jet model: Leptonic relativistic jet model.

XSkdblur([name])

The XSPEC kdblur convolution model: convolve with the laor model

XSkdblur2([name])

The XSPEC kdblur2 convolution model: convolve with the laor2 model

XSkerrbb([name])

The XSPEC kerrbb model: multi-temperature blackbody model for thin accretion disk around a Kerr black hole.

XSkerrconv([name])

The XSPEC kerrconv convolution model: accretion disk line shape with BH spin as free parameter

XSkerrd([name])

The XSPEC kerrd model: optically thick accretion disk around a Kerr black hole.

XSkerrdisk([name])

The XSPEC kerrdisk model: accretion disk line emission with BH spin as free parameter.

XSkyconv([name])

The XSPEC kyconv convolution model: convolution using a relativistic line from axisymmetric accretion disk

XSkyrline([name])

The XSPEC kyrline model: relativistic line from axisymmetric accretion disk

XSlaor([name])

The XSPEC laor model: accretion disk, black hole emission line.

XSlaor2([name])

The XSPEC laor2 model: accretion disk with broken-power law emissivity profile, black hole emission line.

XSlog10con([name])

The XSPEC log10con model: Constant in base 10 log units.

XSlogconst([name])

The XSPEC logconst model: Constant in log units.

XSlogpar([name])

The XSPEC logpar model: log-parabolic blazar model.

XSlorabs([name])

The XSPEC lorabs model: lorentzian absorption line.

XSlorentz([name])

The XSPEC lorentz model: lorentz line profile.

XSlsmooth([name])

The XSPEC lsmooth convolution model: lorentzian smoothing

XSlyman([name])

The XSPEC lyman model: Voigt absorption profiles for H I or He II Lyman series.

XSmeka([name])

The XSPEC meka model: emission, hot diffuse gas (Mewe-Gronenschild).

XSmekal([name])

The XSPEC mekal model: emission, hot diffuse gas (Mewe-Kaastra-Liedahl).

XSmkcflow([name])

The XSPEC mkcflow model: cooling flow, mekal.

XSnei([name])

The XSPEC nei model: collisional plasma, non-equilibrium, constant temperature.

XSnlapec([name])

The XSPEC nlapec model: continuum-only APEC emission spectrum.

XSnotch([name])

The XSPEC notch model: absorption line, notch.

XSnpshock([name])

The XSPEC npshock model: shocked plasma, plane parallel, separate ion, electron temperatures.

XSnsa([name])

The XSPEC nsa model: neutron star atmosphere.

XSnsagrav([name])

The XSPEC nsagrav model: NS H atmosphere model for different g.

XSnsatmos([name])

The XSPEC nsatmos model: NS Hydrogen Atmosphere model with electron conduction and self-irradiation.

XSnsmax([name])

The XSPEC nsmax model: Neutron Star Magnetic Atmosphere.

XSnsmaxg([name])

The XSPEC nsmaxg model: neutron star with a magnetic atmosphere.

XSnsx([name])

The XSPEC nsx model: neutron star with a non-magnetic atmosphere.

XSnteea([name])

The XSPEC nteea model: non-thermal pair plasma.

XSnthComp([name])

The XSPEC nthComp model: Thermally comptonized continuum.

XSolivineabs([name])

The XSPEC olivineabs model: Absorption due to olivine.

XSoptxagn([name])

The XSPEC optxagn model: Colour temperature corrected disc and energetically coupled Comptonisation model for AGN.

XSoptxagnf([name])

The XSPEC optxagnf model: Colour temperature corrected disc and energetically coupled Comptonisation model for AGN.

XSpartcov([name])

The XSPEC partcov convolution model: partial covering

XSpcfabs([name])

The XSPEC pcfabs model: partial covering fraction absorption.

XSpegpwrlw([name])

The XSPEC pegpwrlw model: power law, pegged normalization.

XSpexmon([name])

The XSPEC pexmon model: neutral Compton reflection with self-consistent Fe and Ni lines.

XSpexrav([name])

The XSPEC pexrav model: reflected powerlaw, neutral medium.

XSpexriv([name])

The XSPEC pexriv model: reflected powerlaw, neutral medium.

XSphabs([name])

The XSPEC phabs model: photoelectric absorption.

XSplabs([name])

The XSPEC plabs model: power law absorption.

XSplcabs([name])

The XSPEC plcabs model: powerlaw observed through dense, cold matter.

XSposm([name])

The XSPEC posm model: positronium continuum.

XSpowerlaw([name])

The XSPEC powerlaw model: power law photon spectrum.

XSpshock([name])

The XSPEC pshock model: plane-parallel shocked plasma, constant temperature.

XSpwab([name])

The XSPEC pwab model: power-law distribution of neutral absorbers.

XSqsosed([name])

The XSPEC qsosed model: AGN SED model

XSraymond([name])

The XSPEC raymond model: emission, hot diffuse gas, Raymond-Smith.

XSrdblur([name])

The XSPEC rdblur convolution model: convolve with the diskline model shape

XSredden([name])

The XSPEC redden model: interstellar extinction.

XSredge([name])

The XSPEC redge model: emission, recombination edge.

XSreflect([name])

The XSPEC reflect convolution model: reflection from neutral material

XSrefsch([name])

The XSPEC refsch model: reflected power law from ionized accretion disk.

XSrfxconv([name])

The XSPEC rfxconv convolution model: angle-dependent reflection from an ionized disk

XSrgsext([name])

The XSPEC rgsext convolution model: convolve an RGS spectrum for extended emission

XSrgsxsrc([name])

The XSPEC rgsxsrc convolution model: convolve an RGS spectrum for extended emission.

XSrnei([name])

The XSPEC rnei model: non-equilibrium recombining collisional plasma.

XSsedov([name])

The XSPEC sedov model: sedov model, separate ion/electron temperature.

XSsimpl([name])

The XSPEC simpl convolution model: comptonization of a seed spectrum.

XSsirf([name])

The XSPEC sirf model: self-irradiated funnel.

XSslimbh([name])

The XSPEC slimbh model: Stationary slim accretion disk.

XSsmedge([name])

The XSPEC smedge model: smeared edge.

XSsnapec([name])

The XSPEC snapec model: galaxy cluster spectrum using SN yields.

XSspexpcut([name])

The XSPEC spexpcut model: super-exponential cutoff absorption.

XSspline([name])

The XSPEC spline model: spline modification.

XSsrcut([name])

The XSPEC srcut model: synchrotron spectrum, cutoff power law.

XSsresc([name])

The XSPEC sresc model: synchrotron spectrum, cut off by particle escape.

XSssa([name])

The XSPEC ssa model: Strangeon star atmosphere.

XSsssed([name])

The XSPEC sssed model: Shakura & Sunyaev spectral energy distribution

XSstep([name])

The XSPEC step model: step function convolved with gaussian.

XSswind1([name])

The XSPEC swind1 model: absorption by partially ionized material with large velocity shear.

XStapec([name])

The XSPEC tapec model: APEC emission spectrum with separate continuum and line temperatures.

XSthcomp([name])

The XSPEC thcomp convolution model: Thermally comptonized continuum.

XSuvred([name])

The XSPEC uvred model: interstellar extinction, Seaton Law.

XSvagauss([name])

The XSPEC vagauss model: gaussian line profile in wavelength space with sigma in velocity

XSvapec([name])

The XSPEC vapec model: APEC emission spectrum.

XSvarabs([name])

The XSPEC varabs model: photoelectric absorption.

XSvashift([name])

The XSPEC vashift convolution model: velocity shift an additive model.

XSvbremss([name])

The XSPEC vbremss model: thermal bremsstrahlung.

XSvcempow([name])

The XSPEC vcempow model: plasma emission, multi-temperature using a power-law emission measure.

XSvcheb6([name])

The XSPEC vcheb6 model: differential emission measure using 6-order Chebyshev polynomial.

XSvcie([name])

The XSPEC vcie model: Emission spectrum from a plasma in Collisional-ionization equilibrium.

XSvcoolflow([name])

The XSPEC vcoolflow model: cooling flow, mekal.

XSvcph([name])

The XSPEC vcph model: Cooling + heating model for cool core clusters

XSvequil([name])

The XSPEC vequil model: collisional plasma, ionization equilibrium.

XSvexpcheb6([name])

The XSPEC vexpcheb6 model: differential emission measure using exponential of a 6-order Chebyshev polynomial.

XSvgabs([name])

The XSPEC vgabs model: gaussian absorption line with sigma in km/s

XSvgadem([name])

The XSPEC vgadem model: plasma emission, multi-temperature with gaussian distribution of emission measure.

XSvgaussian([name])

The XSPEC vgaussian model: gaussian line profile with sigma in velocity

XSvgnei([name])

The XSPEC vgnei model: collisional plasma, non-equilibrium, temperature evolution.

XSvlorabs([name])

The XSPEC vlorabs model: lorentzian absorption line with width in km/s.

XSvlorentz([name])

The XSPEC vlorentz model: lorentz line profile with width in velocity.

XSvmcflow([name])

The XSPEC vmcflow model: cooling flow, mekal.

XSvmeka([name])

The XSPEC vmeka model: emission, hot diffuse gas (Mewe-Gronenschild).

XSvmekal([name])

The XSPEC vmekal model: emission, hot diffuse gas (Mewe-Kaastra-Liedahl).

XSvmshift([name])

The XSPEC vmshift convolution model: velocity shift a multiplicative model.

XSvnei([name])

The XSPEC vnei model: collisional plasma, non-equilibrium, constant temperature.

XSvnpshock([name])

The XSPEC vnpshock model: shocked plasma, plane parallel, separate ion, electron temperatures.

XSvoigt([name])

The XSPEC voigt model: Voigt line profile.

XSvoigtabs([name])

The XSPEC voigtabs model: voigt absorption line.

XSvphabs([name])

The XSPEC vphabs model: photoelectric absorption.

XSvpshock([name])

The XSPEC vpshock model: plane-parallel shocked plasma, constant temperature.

XSvraymond([name])

The XSPEC vraymond model: emission, hot diffuse gas, Raymond-Smith.

XSvrnei([name])

The XSPEC vrnei model: non-equilibrium recombining collisional plasma.

XSvsedov([name])

The XSPEC vsedov model: sedov model, separate ion/electron temperature.

XSvtapec([name])

The XSPEC vtapec model: APEC emission spectrum with separate continuum and line temperatures.

XSvvapec([name])

The XSPEC vvapec model: APEC emission spectrum.

XSvvcie([name])

The XSPEC vvcie model: Emission spectrum from a plasma in Collisional-ionization equilibrium.

XSvvgadem([name])

The XSPEC vvgadem model: plasma emission, multi-temperature with gaussian distribution of emission measure.

XSvvgnei([name])

The XSPEC vvgnei model: collisional plasma, non-equilibrium, temperature evolution.

XSvvnei([name])

The XSPEC vvnei model: collisional plasma, non-equilibrium, constant temperature.

XSvvnpshock([name])

The XSPEC vvnpshock model: shocked plasma, plane parallel, separate ion, electron temperatures.

XSvvoigt([name])

The XSPEC vvoigt model: Voigt line profile with widths in km/s

XSvvoigtabs([name])

The XSPEC vvoigtabs model: voigt absorption line with widths in km/s.

XSvvpshock([name])

The XSPEC vvpshock model: plane-parallel shocked plasma, constant temperature.

XSvvrnei([name])

The XSPEC vvrnei model: non-equilibrium recombining collisional plasma.

XSvvsedov([name])

The XSPEC vvsedov model: sedov model, separate ion/electron temperature.

XSvvtapec([name])

The XSPEC vvtapec model: APEC emission spectrum with separate continuum and line temperatures.

XSvvwdem([name])

The XSPEC vvwdem model: plasma emission, multi-temperature with power-law distribution of emission measure.

XSvwdem([name])

The XSPEC vwdem model: plasma emission, multi-temperature with power-law distribution of emission measure.

XSwabs([name])

The XSPEC wabs model: photoelectric absorption, Wisconsin cross-sections.

XSwdem([name])

The XSPEC wdem model: plasma emission, multi-temperature with power-law distribution of emission measure.

XSwndabs([name])

The XSPEC wndabs model: photo-electric absorption, warm absorber.

XSxilconv([name])

The XSPEC xilconv convolution model: angle-dependent reflection from an ionized disk

XSxion([name])

The XSPEC xion model: reflected spectrum of photo-ionized accretion disk/ring.

XSxscat([name])

The XSPEC xscat model: dust scattering.

XSzTBabs([name])

The XSPEC zTBabs model: ISM grain absorption.

XSzagauss([name])

The XSPEC zagauss model: gaussian line profile in wavelength space.

XSzashift([name])

The XSPEC zashift convolution model: redshift an additive model.

XSzbabs([name])

The XSPEC zbabs model: EUV ISM attenuation.

XSzbbody([name])

The XSPEC zbbody model: blackbody spectrum.

XSzbknpower([name])

The XSPEC zbknpower model: broken power law.

XSzbremss([name])

The XSPEC zbremss model: thermal bremsstrahlung.

XSzcutoffpl([name])

The XSPEC zcutoffpl model: power law, high energy exponential cutoff.

XSzdust([name])

The XSPEC zdust model: extinction by dust grains.

XSzedge([name])

The XSPEC zedge model: absorption edge.

XSzfeklor([name])

The XSPEC zfeklor model: Fe K fluourescence line at high resolution

XSzgabs([name])

The XSPEC zgabs model: gaussian absorption line.

XSzgauss([name])

The XSPEC zgauss model: gaussian line profile.

XSzhighect([name])

The XSPEC zhighect model: high-energy cutoff.

XSzigm([name])

The XSPEC zigm model: UV/Optical attenuation by the intergalactic medium.

XSzkerrbb([name])

The XSPEC zkerrbb model: multi-temperature blackbody model for thin accretion disk around a Kerr black hole.

XSzlogpar([name])

The XSPEC zlogpar model: log-parabolic blazar model.

XSzlorabs([name])

The XSPEC zlorabs model: lorentzian absorption line.

XSzlorentz([name])

The XSPEC zlorentz model: lorentz line profile.

XSzmshift([name])

The XSPEC zmshift convolution model: redshift a multiplicative model.

XSzpcfabs([name])

The XSPEC zpcfabs model: partial covering fraction absorption.

XSzphabs([name])

The XSPEC zphabs model: photoelectric absorption.

XSzpowerlw([name])

The XSPEC zpowerlw model: redshifted power law photon spectrum.

XSzredden([name])

The XSPEC zredden model: redshifted version of redden.

XSzsmdust([name])

The XSPEC zsmdust model: extinction by dust grains in starburst galaxies.

XSzvagauss([name])

The XSPEC zvagauss model: gaussian line profile in wavelength space with sigma in velocity

XSzvarabs([name])

The XSPEC zvarabs model: photoelectric absorption.

XSzvfeabs([name])

The XSPEC zvfeabs model: photoelectric absorption with free Fe edge energy.

XSzvgabs([name])

The XSPEC zvgabs model: gaussian absorption line with sigma in km/s

XSzvgaussian([name])

The XSPEC zvgaussian model: gaussian line profile with sigma in velocity

XSzvlorabs([name])

The XSPEC zvlorabs model: lorentzian absorption line with width in km/s.

XSzvlorentz([name])

The XSPEC zvlorentz model: lorentz line profile with width in velocity.

XSzvoigt([name])

The XSPEC zvoigt model: Voigt line profile.

XSzvoigtabs([name])

The XSPEC zvoigtabs model: voigt absorption line.

XSzvphabs([name])

The XSPEC zvphabs model: photoelectric absorption.

XSzvvoigt([name])

The XSPEC zvvoigt model: Voigt line profile with widths in km/s.

XSzvvoigtabs([name])

The XSPEC zvvoigtabs model: voigt absorption line with widths in km/s.

XSzwabs([name])

The XSPEC zwabs model: photoelectric absorption, Wisconsin cross-sections.

XSzwndabs([name])

The XSPEC zwndabs model: photo-electric absorption, warm absorber.

XSzxipab([name])

The XSPEC zxipab model: power-law distribution of ionized absorbers.

XSzxipcf([name])

The XSPEC zxipcf model: partial covering absorption by partially ionized material.

Class Inheritance Diagram

Inheritance diagram of XSagauss, XSagnsed, XSagnslim, XSapec, XSbapec, XSbbody, XSbbodyrad, XSbcempow, XSbcheb6, XSbcie, XSbcoolflow, XSbcph, XSbequil, XSbexpcheb6, XSbexrav, XSbexriv, XSbgadem, XSbgnei, XSbkn2pow, XSbknpower, XSbmc, XSbnei, XSbnpshock, XSbpshock, XSbremss, XSbrnei, XSbsedov, XSbsnapec, XSbtapec, XSbvapec, XSbvcempow, XSbvcheb6, XSbvcie, XSbvcoolflow, XSbvcph, XSbvequil, XSbvexpcheb6, XSbvgadem, XSbvgnei, XSbvnei, XSbvnpshock, XSbvpshock, XSbvrnei, XSbvsedov, XSbvtapec, XSbvvapec, XSbvvcie, XSbvvgadem, XSbvvgnei, XSbvvnei, XSbvvnpshock, XSbvvpshock, XSbvvrnei, XSbvvsedov, XSbvvtapec, XSbvvwdem, XSbvwdem, XSbwcycl, XSbwdem, XSc6mekl, XSc6pmekl, XSc6pvmkl, XSc6vmekl, XScarbatm, XScemekl, XScempow, XScevmkl, XScflow, XScheb6, XScie, XScompLS, XScompPS, XScompST, XScompTT, XScompbb, XScompmag, XScomptb, XScompth, XScoolflow, XScph, XScplinear, XScutoffpl, XSdisk, XSdiskbb, XSdiskir, XSdiskline, XSdiskm, XSdisko, XSdiskpbb, XSdiskpn, XSeebremss, XSeplogpar, XSeqpair, XSeqtherm, XSequil, XSexpcheb6, XSexpdec, XSezdiskbb, XSfeklor, XSgadem, XSgaussian, XSgnei, XSgrad, XSgrbcomp, XSgrbjet, XSgrbm, XShatm, XSjet, XSkerrbb, XSkerrd, XSkerrdisk, XSkyrline, XSlaor, XSlaor2, XSlogpar, XSlorentz, XSmeka, XSmekal, XSmkcflow, XSnei, XSnlapec, XSnpshock, XSnsa, XSnsagrav, XSnsatmos, XSnsmax, XSnsmaxg, XSnsx, XSnteea, XSnthComp, XSoptxagn, XSoptxagnf, XSpegpwrlw, XSpexmon, XSpexrav, XSpexriv, XSplcabs, XSposm, XSpowerlaw, XSpshock, XSqsosed, XSraymond, XSredge, XSrefsch, XSrnei, XSsedov, XSsirf, XSslimbh, XSsnapec, XSsrcut, XSsresc, XSssa, XSsssed, XSstep, XStapec, XSvagauss, XSvapec, XSvbremss, XSvcempow, XSvcheb6, XSvcie, XSvcoolflow, XSvcph, XSvequil, XSvexpcheb6, XSvgadem, XSvgaussian, XSvgnei, XSvlorentz, XSvmcflow, XSvmeka, XSvmekal, XSvnei, XSvnpshock, XSvoigt, XSvpshock, XSvraymond, XSvrnei, XSvsedov, XSvtapec, XSvvapec, XSvvcie, XSvvgadem, XSvvgnei, XSvvnei, XSvvnpshock, XSvvoigt, XSvvpshock, XSvvrnei, XSvvsedov, XSvvtapec, XSvvwdem, XSvwdem, XSwdem, XSzagauss, XSzbbody, XSzbknpower, XSzbremss, XSzcutoffpl, XSzfeklor, XSzgauss, XSzkerrbb, XSzlogpar, XSzlorentz, XSzpowerlw, XSzvagauss, XSzvgaussian, XSzvlorentz, XSzvoigt, XSzvvoigt

Inheritance diagram of XSSSS_ice, XSTBabs, XSTBfeo, XSTBgas, XSTBgrain, XSTBpcf, XSTBrel, XSTBvarabs, XSabsori, XSacisabs, XScabs, XSconstant, XScyclabs, XSdust, XSedge, XSexpabs, XSexpfac, XSgabs, XSheilin, XShighecut, XShrefl, XSismabs, XSismdust, XSlog10con, XSlogconst, XSlorabs, XSlyman, XSnotch, XSolivineabs, XSpcfabs, XSphabs, XSplabs, XSpwab, XSredden, XSsmedge, XSspexpcut, XSspline, XSswind1, XSuvred, XSvarabs, XSvgabs, XSvlorabs, XSvoigtabs, XSvphabs, XSvvoigtabs, XSwabs, XSwndabs, XSxion, XSxscat, XSzTBabs, XSzbabs, XSzdust, XSzedge, XSzgabs, XSzhighect, XSzigm, XSzlorabs, XSzpcfabs, XSzphabs, XSzredden, XSzsmdust, XSzvarabs, XSzvfeabs, XSzvgabs, XSzvlorabs, XSzvoigtabs, XSzvphabs, XSzvvoigtabs, XSzwabs, XSzwndabs, XSzxipab, XSzxipcf

Inheritance diagram of XScflux, XScglumin, XSclumin, XScpflux, XSgsmooth, XSireflect, XSkdblur, XSkdblur2, XSkerrconv, XSkyconv, XSlsmooth, XSpartcov, XSrdblur, XSreflect, XSrfxconv, XSrgsext, XSrgsxsrc, XSsimpl, XSthcomp, XSvashift, XSvmshift, XSxilconv, XSzashift, XSzmshift