EUV/Soft X-ray Spectra for Low B Neutron Stars

Roger W. Romani, Mohan Rajagopal, Forrest J. Rogers, Carlos A. Iglesias
1996 International Astronomical Union Colloquium  
RecentROSATandEUVEdetections of spin-powered neutron stars suggest that many emit 'thermal' radiation, peaking in the EUV/soft X-ray band. These data constrain the neutron stars' thermal history, but interpretation requires comparison with model atmosphere computations, since emergent spectra depend strongly on the surface composition and magnetic field. As recent opacity computations show substantial change to absorption cross sections at neutron star photospheric conditions, we report here on
more » ... , we report here on new model atmosphere computations employing such data. The results are compared with magnetic atmosphere models and applied to PSR J0437−4715, a low field neutron star.
doi:10.1017/s0252921100036368 fatcat:k6rw5emiive37ahj76he3hn3ga