set_xsabund

Synopsis

Set XSPEC solar abundance

set_xsabund(abundance)
get_xsabund()

Description

The set_xsabund command sets the elemental abundance table used in XSpec plasma-code models. The get_xsabund command returns the current setting. The set_xsabund command accepts user-defined files containing solar abundances, in addition to the options listed in the table below. The input file should be in ASCII format, containing a single column of 30 float-type abundance values, all relative to Hydrogen.

Available Abundances

XSpec version

This information is taken from the XSpec User's Guide. Version 12.7.1 of the XSpec models is supplied with CIAO 4.4.1.

Example 1

sherpa> print get_xsabund()
angr
sherpa> set_xsabund("wilm")
Solar Abundance Vector set to wilm: Wilms, J., Allen, A. & McCray, R.
ApJ 542 914 (2000) (abundances are set to zero for those elements not
included in the paper).

The current abundance setting is retrieved ("angr", the default). It is then changed to "wilm".

Example 2

sherpa> set_xsabund("myabund.dat")

Solar abundances are set with a user-defined ASCII file containing a column of float-type solar abundance values.

Abundance Tables

All abundances are number relative to H.

Tables for xspecabundan Arguments

Bugs

For a list of known bugs and issues with the XSPEC models, please visit the XSPEC bugs page.

See Also

confidence

set_conf_opt, set_covar_opt, set_proj_opt

data

get_bkg_plot, set_areascal, set_arf, set_backscal, set_bkg, set_coord, set_counts, set_data, set_exposure, set_grouping, set_quality, set_rmf, set_staterror, set_syserror

filtering

set_filter

info

list_model_ids, show_bkg_model, show_bkg_source

methods

set_iter_method, set_iter_method_opt, set_method, set_method_opt

modeling

add_model, add_user_pars, clean, create_model_component, delete_bkg_model, delete_model, delete_model_component, get_model, get_model_autoassign_func, get_model_component, get_model_component_image, get_model_component_plot, get_model_plot, get_num_par, get_order_plot, get_par, get_pileup_model, get_source, get_source_component_image, get_source_component_plot, image_model, image_model_component, image_source, image_source_component, integrate, integrate1d, link, load_table_model, load_template_model, load_user_model, normal_sample, reset, save_model, save_source, set_bkg_model, set_full_model, set_model_autoassign_func, set_par, set_pileup_model, set_source, set_xscosmo, set_xsxsect, set_xsxset, t_sample, uniform_sample

plotting

get_lrt_plot, get_lrt_results, get_pvalue_plot, get_pvalue_results, plot_cdf, plot_lrt, plot_model, plot_model_component, plot_pdf, plot_pvalue, plot_scatter, plot_source, plot_source_component, plot_trace

psfs

delete_psf, load_conv

saving

save_delchi, save_resid

statistics

set_prior, set_sampler, set_sampler_opt, set_stat

utilities

calc_chisqr, calc_energy_flux, calc_model_sum, calc_photon_flux, calc_source_sum, calc_stat, eqwidth, set_analysis, set_default_id

visualization

contour_model, contour_ratio, contour_resid, get_ratio, get_resid, image_setregion