Thermal emission from low-field neutron stars (Gänsicke+, 2002)

Details Thermal emission from low-field neutron stars (Gänsicke+, 2002) Thermal emission from low-field neutron stars (Gänsicke+, 2002)

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..33861001g&link_type=abstract

VizieR On-line Data Catalog: J/A+A/386/1001. Originally published in: 2002A&A...386.1001G

Computer Science

1

Models: Atmosphere

Scientific paper

We present a new grid of LTE model atmospheres for weakly magnetic (B<~1010G) neutron stars, using X opacity and equation of state data from the OPAL project and employing a fully frequency- and angle-dependent radiation transfer. Model spectra for low-field neutron stars with three different photospheric compositions are presented: (1) pure hydrogen atmospheres, (2) atmospheres with solar abundances, and (3) pure iron atmospheres. Each grid covers 29 effective temperatures log(Teff[K])=5.10-6.50 in steps of 0.05. The model spectra are tabulated as angle-averaged unredshifted (surface) Eddington fluxes. All spectra have been calculated for a canonical neutron star configuration, Mns=1.4M&sun;, Rns=10km, corresponding to a surface gravitational acceleration of log(g)=14.386. The same model grids are also available as XSPEC tables at http://legacy.gsfc.nasa.gov/docs/xanadu/xspec/models/gbr.html (3 data files).

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