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Last modified: 10 April 2008
Hardcopy (PDF): A4 | Letter

Contextual list of Ahelp files for Sherpa 4.0 Beta

Jump to: Main AHELP page | Alphabetical List

py.sherpa sherpa sl.sherpa

Context Topic Summary
py.sherpa atten Attenuation by ISM.
bbodyfreq Blackbody as a function of frequency.
bbody Blackbody as a function of energy.
beta1d 1-D surface brightness beta-model.
beta2d 2-D Lorentzian with varying power law.
box1d 1-D box function.
box2d 2-D box function.
bpl1d Broken power law function.
const1d 1-D constant amplitude model.
const2d 2-D constant amplitude model.
cos Cosine function.
covariance Estimate confidence intervals for selected thawed parameters based on covariance method
delta1d 1-D delta function.
delta2d 2-D delta function.
dered Dereddening function.
devaucouleurs2d DeVaucouleurs profile.
edge Photoabsorption edge model.
erfc A 1-D complementary error function.
erf A 1-D error function.
exp10 Exponential function, base 10.
exp Exponential function.
fit Perform a fit using current optimization method and fit statistic.
freeze Freeze model parameters, so they do not vary during a fit.
gauss1d 1-D unnormalized Gaussian function.
gauss2d 2-D unnormalized Gaussian function.
get_data Return a Sherpa data set by ID.
get_full_model Return the whole model associated with a Sherpa data set ID.
hubblereynolds Hubble-Reynolds profile.
ignore2d_id Ignore 2D data with a region filter by data set ID(s).
ignore2d Ignore 2D data with a region filter.
ignore_id Ignore 1D data with an interval filter by data set ID(s).
ignore Ignore 1D data with an interval filter.
image_data Send image of the data to the imager.
image_deleteframes Delete all frames in the imager
image_fit Send image of the fit_results to the imager.
image_getregion Returns a region description from the imager
image_model Send image of the model to the imager.
image_ratio Send image of the ratio (i.e., data/model) to the imager.
image_resid Send image of the residuals (i.e., data - model) to the imager.
image_setregion Sends a region description to the imager, where it is drawb in the current frame
image_xpaget Retrieve data from ds9 using XPA.
image_xpaset Send data to ds9 using XPA.
int_proj Create a confidence plot of fit statistic vs. a thawed parameter value.
int_unc Create a confidence plot of fit statistic vs. parameter value.
jdpileup A CCD pileup model developed by John Davis of MIT.
linebroad Line broadening profile.
load_arf Load ARF data by id
load_ascii Load ASCII/text data from a file
load_data Load a data file
load_image Load FITS image data by id
load_pha Load PHA data by id
load_rmf Load RMF data by id
load_table_model Load data into a table model by data set ID
load_table Load data by data set ID
log10 Logarithm function, base 10.
log Natural logarithm function.
lorentz1d 1-D normalized Lorentzian function.
lorentz2d 2-D unnormalized Lorentzian function.
models Summary of Available Models
normbeta1d 1-D normalized beta function.
normgauss1d 1-D normalized Gaussian function.
notice2d_id Notice 2D data with a region filter by data set ID(s).
notice2d Notice 2D data with a region filter.
notice_id Notice 1D data with an interval filter by data set ID(s).
notice Notice 1D data with an interval filter.
plot_chisqr Send a chi-squared plot to the visualizer
plot_data Send a data plot to the visualizer
plot_fit Send a fit plot to the visualizer
plot_model Send a model plot to the visualizer
plot_ratio Send a ratio (data / model) plot to the visualizer
plot_resid Send a residuals (data - model) plot to the visualizer
poisson Poisson function.
polynom1d 1-D polynomial function.
polynom2d 2-D polynomial function.
powlaw1d 1-D power law.
projection Estimate confidence intervals for selected thawed parameters
psf1d A 1-D PSF instrument model
psf2d A 2-D PSF instrument model
reg_proj Creates a contour plot of confidence regions using the projection algorithm
reg_unc Create a confidence contour of fit statistic vs. two thawed parameter values.
schechter Schechter function.
set_bkg Set a background PHA dataset
set_coord Set the coordinate system
set_method_opt Set the options of the chosen Sherpa optimization method
set_method Set the Sherpa optimization method by name
set_model Set the model expression to be used for fitting a dataset.
set_par Set initial values for a model parameter
set_psf_model Set the psf kernel and psf model
set_source Set the source model expression to be used for fitting a dataset.
set_stat Set the current Sherpa statistic by name
show_all Reports the current state of the Sherpa session
sin Sine function.
sqrt Square root function.
stephi1d 1-D step function.
steplo1d 1-D step function.
subtract Perform background subtraction
tablemodel A table model class.
tan Tangent function.
thaw Thaw a list of parameters
unsubtract Undo background subtraction
xsabsori Ionized absorber. XSpec model.
xsacisabs Decay in the ACIS quantum efficiency. XSpec model.
xsapec APEC thermal plasma model. XSpec model.
xsbapec APEC thermal plasma model with velocity broadening as a free parameter. XSpec model.
xsbbodyrad Blackbody spectrum with norm proportional to surface area. XSpec model.
xsbbody Blackbody spectrum. XSpec model.
xsbexrav E-folded broken power law reflected from neutral matter. XSpec model.
xsbexriv E-folded broken power law reflected from ionized matter. XSpec model.
xsbkn2pow Broken power law, two break energies. XSpec model.
xsbknpower Broken power law. XSpec model.
xsbmc Comptonization by relativistically moving matter. XSpec model.
xsbremss Thermal bremsstrahlung. XSpec model.
xsbvapec APEC thermal plasma model with variable abundances and velocity broadening as a free parameter. XSpec model.
xsc6mekl 6th-order Chebyshev polynomial DEM using mekal. XSpec model.
xsc6pmekl Exponential of 6th-order Chebyshev polyn. DEM using mekal. XSpec model.
xsc6pvmkl Variable abundance version of c6pmekl. XSpec model.
xsc6vmekl Variable abundance version of c6mekl. XSpec model.
xscabs Compton scattering (non-relativistic). XSpec model.
xscemekl Multi-temperature mekal. XSpec model.
xscevmkl Multi-temperature vmeka. XSpec model.
xscflow Cooling flow model. XSpec model.
xscompbb Comptonized blackbody spectrum after Nishimura et al. (1986). XSpec model.
xscompls Comptonization spectrum after Lamb and Sanford (1979). XSpec model.
xscompps Comptonization, Poutanen and Svenson. XSpec model.
xscompst Comptonization spectrum after Sunyaev and Titarchuk (1980). XSpec model.
xscomptt Comptonization spectrum after Titarchuk (1994). XSpec model.
xsconstant Energy-independent multiplicative factor. XSpec model.
xscutoffpl Power law with high energy exponential cutoff. XSpec model.
xscyclabs Cyclotron absorption line. XSpec model.
xsdiskbb Multiple blackbody disk model. XSpec model.
xsdiskline Line emission from relativistic accretion disk. XSpec model.
xsdiskm Disk model with gas pressure viscosity. XSpec model.
xsdisko Modified blackbody disk model. XSpec model.
xsdiskpbb Accretion disk, power-law dependence for T(r). XSpec model.
xsdiskpn Accretion disk around a black hole. XSpec model.
xsdisk Disk model. XSpec model.
xsdust Dust scattering out of the beam. XSpec model.
xsedge Absorption edge. XSpec model.
xsequil Equilibrium ionization collisional plasma model from Borkowski. XSpec model.
xsexpabs Low-energy exponential cutoff. XSpec model.
xsexpdec An exponential decay. XSpec model.
xsexpfac Exponential factor. XSpec model.
xsezdiskbb Multiple blackbody disk model with zero-torque inner boundary. XSpec model.
xsgabs A multiplicative gaussian absorption line. XSpec model.
xsgaussian Simple gaussian line profile. XSpec model.
xsgnei Generalized single ionization NEI plasma model. XSpec model.
xsgrad GR accretion disk around a black hole. XSpec model.
xsgrbm Gamma-ray burst model. XSpec model.
xshighecut High energy cutoff. XSpec model.
xshrefl Simple reflection model good up to 15 keV. XSpec model.
xskerrbb Multi-temperature blackbody model for thin accretion disk around a Kerr black hole. XSpec model.
xskerrd Optically thick accretion disk around a Kerr black hole. XSpec model.
xslaor2 Accretion disk with broken-power law emissivity profile, black hole emission line. XSpec model.
xslaor Line from accretion disk around a black hole. XSpec model.
xslorentz Lorentzian line profile. XSpec model.
xsmekal Mewe-Kaastra-Liedahl thermal plasma (1995). XSpec model.
xsmeka Mewe-Gronenschild-Kaastra thermal plasma (1992). XSpec model.
xsmkcflow Cooling flow model based on mekal. XSpec model.
xsnei Simple nonequilibrium ionization plasma model. XSpec model.
xsnotch Notch line absorption. XSpec model.
xsnpshock Plane-parallel shock with ion and electron temperatures. XSpec model.
xsnsagrav NS H atmosphere model for different g. XSpec model.
xsnsatmos NS Hydrogen Atmosphere model with electron conduction and self-irradiation. XSpec model.
xsnsa Spectra in the X-ray range (0.05-10 keV) emitted from a hydrogen atmosphere of a neutron star. XSpec model.
xsnteea Pair plasma model. XSpec model.
xspcfabs Partial covering fraction absorption. XSpec model.
xspegpwrlw Power law with pegged normalization. XSpec model.
xspexrav Exponentially cutoff power law reflected from neutral matter. XSpec model.
xspexriv Exponentially cutoff power law reflected from ionized matter. XSpec model.
xsphabs Photo-electric absorption. XSpec model.
xsplabs Absorption model with power law dependence on energy. XSpec model.
xsplcabs Cutoff power law observed through dense, cold matter. XSpec model.
xsposm Positronium continuum. XSpec model.
xspowerlaw Simple photon power law. XSpec model.
xspshock Constant temperature, plane-parallel shock plasma model. XSpec model.
xspwab An extension of partial covering fraction absorption into a power-law distribution of covering fraction. XSpec model.
xsraymond Raymond-Smith thermal plasma. XSpec model.
xsredden IR/optical/UV extinction from Cardelli et al. (1989). XSpec model.
xsredge Recombination edge. XSpec model.
xsrefsch E-folded power law reflected from an ionized relativistic disk. XSpec model.
xssedov Sedov model with electron and ion temperatures. XSpec model.
xssmedge Smoothed absorption edge. XSpec model.
xsspline Spline multiplicative factor. XSpec model.
xssrcut Synchrotron radiation from cutoff electron distribution. XSpec model.
xssresc Synchrotron radiation from escape-limited electron distribution. XSpec model.
xssss_ice Einstein SSS ice absorption. XSpec model.
xsstep Step function convolved with gaussian. XSpec model.
xstbabs Calculates the absorption of X-rays by the ISM. XSpec model.
xstbgrain Calculates the absorption of X-rays by the ISM with variable hydrogen to H2 ratio and grain parameters. XSpec model.
xstbvarabs Calculates the absorption of X-rays by the ISM, allowing user to vary all abundances, depletion factors, and grain properties. XSpec model.
xsuvred UV reddening. XSpec model.
xsvapec APEC thermal plasma model with variable abundances. XSpec model.
xsvarabs Photoelectric absorption with variable abundances. XSpec model.
xsvbremss Thermal bremsstrahlung spectrum with variable H/He. XSpec model.
xsvequil Ionization equilibrium collisional plasma model with variable abundances. XSpec model.
xsvgnei Non-equilibrium ionization collisional plasma model with variable abundances. XSpec model.
xsvmcflow Cooling flow model based on vmekal. XSpec model.
xsvmekal M-K-L thermal plasma with variable abundances. XSpec model.
xsvmeka M-G-K thermal plasma with variable abundances. XSpec model.
xsvnei Non-equilibrium ionization collisional plasma model with variable abundances. XSpec model.
xsvnpshock Plane-parallel shock plasma model with separate ion and electron temperatures and variable abundances. XSpec model.
xsvphabs Photoelectric absorption with variable abundances. XSpec model.
xsvpshock Constant temperature, plane-parallel shock plasma model with variable abundances. XSpec model.
xsvraymond Raymond-Smith thermal plasma with variable abundances. XSpec model.
xsvsedov Sedov model with separate ion and electron temperatures and variable abundances. XSpec model.
xswabs Photoelectric absorption (Morrison and McCammon). XSpec model.
xswndabs Photoelectric absorption with low energy window. XSpec model.
xsxion Reflected spectra of a photo-ionized accretion disk or ring. XSpec model.
xszbbody Redshifted blackbody. XSpec model.
xszbremss Redshifted thermal bremsstrahlung. XSpec model.
xszdust Extinction by dust grains. XSpec model.
xszedge Redshifted absorption edge. XSpec model.
xszgauss Redshifted gaussian. XSpec model.
xszhighect Redshifted high energy cutoff. XSpec model.
xszpcfabs Redshifted partial covering absorption. XSpec model.
xszphabs Redshifted photoelectric absorption. XSpec model.
xszpowerlw Redshifted power law. XSpec model.
xszredden Redshifted version of redden. XSpec model.
xszsmdust Extinction by dust grains in starburst galaxies. XSpec model.
xsztbabs Calculates the absorption of X-rays by the ISM for modeling redshifted absorption. Does not include a dust component. XSpec model.
xszvarabs Redshifted photoelectric absorption with variable abundances. XSpec model.
xszvfeabs Redshifted absorption with variable iron abundance. XSpec model.
xszvphabs Redshifted photoelectric absorption with variable abundances. XSpec model.
xszwabs Redshifted "Wisconsin absorption." XSpec model.
xszwndabs Redshifted photoelectric absorption with low energy window. XSpec model.
xs XSpec model functions.

sherpa sherpa Introduction to Sherpa, the CIAO modeling and fitting package

sl.sherpa atten Attenuation by ISM.
bbodyfreq Blackbody as a function of frequency.
bbody Blackbody as a function of energy.
beta1d 1-D surface brightness beta-model.
beta2d 2-D Lorentzian with varying power law.
box1d 1-D box function.
box2d 2-D box function.
bpl1d Broken power law function.
const1d 1-D constant amplitude model.
const2d 2-D constant amplitude model.
cos Cosine function.
covariance Estimate confidence intervals for selected thawed parameters based on covariance method
delta1d 1-D delta function.
delta2d 2-D delta function.
dered Dereddening function.
devaucouleurs2d DeVaucouleurs profile.
edge Photoabsorption edge model.
erfc A 1-D complementary error function.
erf A 1-D error function.
exp10 Exponential function, base 10.
exp Exponential function.
fit Perform a fit using current optimization method and fit statistic.
freeze Freeze model parameters, so they do not vary during a fit.
gauss1d 1-D unnormalized Gaussian function.
gauss2d 2-D unnormalized Gaussian function.
get_data Return a Sherpa data set by ID.
get_full_model Return the whole model associated with a Sherpa data set ID.
hubblereynolds Hubble-Reynolds profile.
ignore2d_id Ignore 2D data with a region filter by data set ID(s).
ignore2d Ignore 2D data with a region filter.
ignore_id Ignore 1D data with an interval filter by data set ID(s).
ignore Ignore 1D data with an interval filter.
image_data Send image of the data to the imager.
image_deleteframes Delete all frames in the imager
image_fit Send image of the fit_results to the imager.
image_getregion Returns a region description from the imager
image_model Send image of the model to the imager.
image_ratio Send image of the ratio (i.e., data/model) to the imager.
image_resid Send image of the residuals (i.e., data - model) to the imager.
image_setregion Sends a region description to the imager, where it is drawb in the current frame
image_xpaget Retrieve data from ds9 using XPA.
image_xpaset Send data to ds9 using XPA.
int_proj Create a confidence plot of fit statistic vs. a thawed parameter value.
int_unc Create a confidence plot of fit statistic vs. parameter value.
jdpileup A CCD pileup model developed by John Davis of MIT.
linebroad Line broadening profile.
load_arf Load ARF data by id
load_ascii Load ASCII/text data from a file
load_data Load a data file
load_image Load FITS image data by id
load_pha Load PHA data by id
load_rmf Load RMF data by id
load_table_model Load data into a table model by data set ID
load_table Load data by data set ID
log10 Logarithm function, base 10.
log Natural logarithm function.
lorentz1d 1-D normalized Lorentzian function.
lorentz2d 2-D unnormalized Lorentzian function.
models Summary of Available Models
normbeta1d 1-D normalized beta function.
normgauss1d 1-D normalized Gaussian function.
notice2d_id Notice 2D data with a region filter by data set ID(s).
notice2d Notice 2D data with a region filter.
notice_id Notice 1D data with an interval filter by data set ID(s).
notice Notice 1D data with an interval filter.
plot_chisqr Send a chi-squared plot to the visualizer
plot_data Send a data plot to the visualizer
plot_fit Send a fit plot to the visualizer
plot_model Send a model plot to the visualizer
plot_ratio Send a ratio (data / model) plot to the visualizer
plot_resid Send a residuals (data - model) plot to the visualizer
poisson Poisson function.
polynom1d 1-D polynomial function.
polynom2d 2-D polynomial function.
powlaw1d 1-D power law.
projection Estimate confidence intervals for selected thawed parameters
psf1d A 1-D PSF instrument model
psf2d A 2-D PSF instrument model
reg_proj Creates a contour plot of confidence regions using the projection algorithm
reg_unc Create a confidence contour of fit statistic vs. two thawed parameter values.
schechter Schechter function.
set_bkg Set a background PHA dataset
set_coord Set the coordinate system
set_method_opt Set the options of the chosen Sherpa optimization method
set_method Set the Sherpa optimization method by name
set_model Set the model expression to be used for fitting a dataset.
set_par Set initial values for a model parameter
set_psf_model Set the psf kernel and psf model
set_source Set the source model expression to be used for fitting a dataset.
set_stat Set the current Sherpa statistic by name
show_all Reports the current state of the Sherpa session
sin Sine function.
sqrt Square root function.
stephi1d 1-D step function.
steplo1d 1-D step function.
subtract Perform background subtraction
tablemodel A table model class.
tan Tangent function.
thaw Thaw a list of parameters
unsubtract Undo background subtraction
xsabsori Ionized absorber. XSpec model.
xsacisabs Decay in the ACIS quantum efficiency. XSpec model.
xsapec APEC thermal plasma model. XSpec model.
xsbapec APEC thermal plasma model with velocity broadening as a free parameter. XSpec model.
xsbbodyrad Blackbody spectrum with norm proportional to surface area. XSpec model.
xsbbody Blackbody spectrum. XSpec model.
xsbexrav E-folded broken power law reflected from neutral matter. XSpec model.
xsbexriv E-folded broken power law reflected from ionized matter. XSpec model.
xsbkn2pow Broken power law, two break energies. XSpec model.
xsbknpower Broken power law. XSpec model.
xsbmc Comptonization by relativistically moving matter. XSpec model.
xsbremss Thermal bremsstrahlung. XSpec model.
xsbvapec APEC thermal plasma model with variable abundances and velocity broadening as a free parameter. XSpec model.
xsc6mekl 6th-order Chebyshev polynomial DEM using mekal. XSpec model.
xsc6pmekl Exponential of 6th-order Chebyshev polyn. DEM using mekal. XSpec model.
xsc6pvmkl Variable abundance version of c6pmekl. XSpec model.
xsc6vmekl Variable abundance version of c6mekl. XSpec model.
xscabs Compton scattering (non-relativistic). XSpec model.
xscemekl Multi-temperature mekal. XSpec model.
xscevmkl Multi-temperature vmeka. XSpec model.
xscflow Cooling flow model. XSpec model.
xscompbb Comptonized blackbody spectrum after Nishimura et al. (1986). XSpec model.
xscompls Comptonization spectrum after Lamb and Sanford (1979). XSpec model.
xscompps Comptonization, Poutanen and Svenson. XSpec model.
xscompst Comptonization spectrum after Sunyaev and Titarchuk (1980). XSpec model.
xscomptt Comptonization spectrum after Titarchuk (1994). XSpec model.
xsconstant Energy-independent multiplicative factor. XSpec model.
xscutoffpl Power law with high energy exponential cutoff. XSpec model.
xscyclabs Cyclotron absorption line. XSpec model.
xsdiskbb Multiple blackbody disk model. XSpec model.
xsdiskline Line emission from relativistic accretion disk. XSpec model.
xsdiskm Disk model with gas pressure viscosity. XSpec model.
xsdisko Modified blackbody disk model. XSpec model.
xsdiskpbb Accretion disk, power-law dependence for T(r). XSpec model.
xsdiskpn Accretion disk around a black hole. XSpec model.
xsdisk Disk model. XSpec model.
xsdust Dust scattering out of the beam. XSpec model.
xsedge Absorption edge. XSpec model.
xsequil Equilibrium ionization collisional plasma model from Borkowski. XSpec model.
xsexpabs Low-energy exponential cutoff. XSpec model.
xsexpdec An exponential decay. XSpec model.
xsexpfac Exponential factor. XSpec model.
xsezdiskbb Multiple blackbody disk model with zero-torque inner boundary. XSpec model.
xsgabs A multiplicative gaussian absorption line. XSpec model.
xsgaussian Simple gaussian line profile. XSpec model.
xsgnei Generalized single ionization NEI plasma model. XSpec model.
xsgrad GR accretion disk around a black hole. XSpec model.
xsgrbm Gamma-ray burst model. XSpec model.
xshighecut High energy cutoff. XSpec model.
xshrefl Simple reflection model good up to 15 keV. XSpec model.
xskerrbb Multi-temperature blackbody model for thin accretion disk around a Kerr black hole. XSpec model.
xskerrd Optically thick accretion disk around a Kerr black hole. XSpec model.
xslaor2 Accretion disk with broken-power law emissivity profile, black hole emission line. XSpec model.
xslaor Line from accretion disk around a black hole. XSpec model.
xslorentz Lorentzian line profile. XSpec model.
xsmekal Mewe-Kaastra-Liedahl thermal plasma (1995). XSpec model.
xsmeka Mewe-Gronenschild-Kaastra thermal plasma (1992). XSpec model.
xsmkcflow Cooling flow model based on mekal. XSpec model.
xsnei Simple nonequilibrium ionization plasma model. XSpec model.
xsnotch Notch line absorption. XSpec model.
xsnpshock Plane-parallel shock with ion and electron temperatures. XSpec model.
xsnsagrav NS H atmosphere model for different g. XSpec model.
xsnsatmos NS Hydrogen Atmosphere model with electron conduction and self-irradiation. XSpec model.
xsnsa Spectra in the X-ray range (0.05-10 keV) emitted from a hydrogen atmosphere of a neutron star. XSpec model.
xsnteea Pair plasma model. XSpec model.
xspcfabs Partial covering fraction absorption. XSpec model.
xspegpwrlw Power law with pegged normalization. XSpec model.
xspexrav Exponentially cutoff power law reflected from neutral matter. XSpec model.
xspexriv Exponentially cutoff power law reflected from ionized matter. XSpec model.
xsphabs Photo-electric absorption. XSpec model.
xsplabs Absorption model with power law dependence on energy. XSpec model.
xsplcabs Cutoff power law observed through dense, cold matter. XSpec model.
xsposm Positronium continuum. XSpec model.
xspowerlaw Simple photon power law. XSpec model.
xspshock Constant temperature, plane-parallel shock plasma model. XSpec model.
xspwab An extension of partial covering fraction absorption into a power-law distribution of covering fraction. XSpec model.
xsraymond Raymond-Smith thermal plasma. XSpec model.
xsredden IR/optical/UV extinction from Cardelli et al. (1989). XSpec model.
xsredge Recombination edge. XSpec model.
xsrefsch E-folded power law reflected from an ionized relativistic disk. XSpec model.
xssedov Sedov model with electron and ion temperatures. XSpec model.
xssmedge Smoothed absorption edge. XSpec model.
xsspline Spline multiplicative factor. XSpec model.
xssrcut Synchrotron radiation from cutoff electron distribution. XSpec model.
xssresc Synchrotron radiation from escape-limited electron distribution. XSpec model.
xssss_ice Einstein SSS ice absorption. XSpec model.
xsstep Step function convolved with gaussian. XSpec model.
xstbabs Calculates the absorption of X-rays by the ISM. XSpec model.
xstbgrain Calculates the absorption of X-rays by the ISM with variable hydrogen to H2 ratio and grain parameters. XSpec model.
xstbvarabs Calculates the absorption of X-rays by the ISM, allowing user to vary all abundances, depletion factors, and grain properties. XSpec model.
xsuvred UV reddening. XSpec model.
xsvapec APEC thermal plasma model with variable abundances. XSpec model.
xsvarabs Photoelectric absorption with variable abundances. XSpec model.
xsvbremss Thermal bremsstrahlung spectrum with variable H/He. XSpec model.
xsvequil Ionization equilibrium collisional plasma model with variable abundances. XSpec model.
xsvgnei Non-equilibrium ionization collisional plasma model with variable abundances. XSpec model.
xsvmcflow Cooling flow model based on vmekal. XSpec model.
xsvmekal M-K-L thermal plasma with variable abundances. XSpec model.
xsvmeka M-G-K thermal plasma with variable abundances. XSpec model.
xsvnei Non-equilibrium ionization collisional plasma model with variable abundances. XSpec model.
xsvnpshock Plane-parallel shock plasma model with separate ion and electron temperatures and variable abundances. XSpec model.
xsvphabs Photoelectric absorption with variable abundances. XSpec model.
xsvpshock Constant temperature, plane-parallel shock plasma model with variable abundances. XSpec model.
xsvraymond Raymond-Smith thermal plasma with variable abundances. XSpec model.
xsvsedov Sedov model with separate ion and electron temperatures and variable abundances. XSpec model.
xswabs Photoelectric absorption (Morrison and McCammon). XSpec model.
xswndabs Photoelectric absorption with low energy window. XSpec model.
xsxion Reflected spectra of a photo-ionized accretion disk or ring. XSpec model.
xszbbody Redshifted blackbody. XSpec model.
xszbremss Redshifted thermal bremsstrahlung. XSpec model.
xszdust Extinction by dust grains. XSpec model.
xszedge Redshifted absorption edge. XSpec model.
xszgauss Redshifted gaussian. XSpec model.
xszhighect Redshifted high energy cutoff. XSpec model.
xszpcfabs Redshifted partial covering absorption. XSpec model.
xszphabs Redshifted photoelectric absorption. XSpec model.
xszpowerlw Redshifted power law. XSpec model.
xszredden Redshifted version of redden. XSpec model.
xszsmdust Extinction by dust grains in starburst galaxies. XSpec model.
xsztbabs Calculates the absorption of X-rays by the ISM for modeling redshifted absorption. Does not include a dust component. XSpec model.
xszvarabs Redshifted photoelectric absorption with variable abundances. XSpec model.
xszvfeabs Redshifted absorption with variable iron abundance. XSpec model.
xszvphabs Redshifted photoelectric absorption with variable abundances. XSpec model.
xszwabs Redshifted "Wisconsin absorption." XSpec model.
xszwndabs Redshifted photoelectric absorption with low energy window. XSpec model.
xs XSpec model functions.

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Hardcopy (PDF): A4 | Letter
Last modified: 10 April 2008



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