Synopsis
The XSPEC nsatmos model: NS Hydrogen Atmosphere model with electron conduction and self-irradiation.
Syntax
xsnsatmos The xsnsatmos model is an additive model component.
Description
The model is described at [1] .
Example
>>> create_model_component("xsnsatmos", "mdl")
>>> print(mdl)Create a component of the xsnsatmos model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.LogT_eff thawed 6 5 6.5 K mdl.M_ns thawed 1.4 0.5 3 Msun mdl.R_ns thawed 10 5 30 km mdl.dist thawed 10 0.1 100 kpc mdl.norm thawed 1 0 1e+24
ATTRIBUTES
The attributes for this object are:
| Attribute | Definition |
|---|---|
| LogT_eff | The log of Teff, the unredshifted effective temperature. |
| M_ns | The neutron star gravitational mass, in units of the solar mass. |
| R_ns | The "true" neutron star radius, in km. |
| dist | The distance to the neutron star, in kpc. |
| norm | The fraction of the neutron star surface emitting. |
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelNsatmos.html
XSPEC version
CIAO 4.17 comes with support for version 12.14.0k of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.14.0k
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.