Physics
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.7208m&link_type=abstract
American Astronomical Society Meeting 208, #72.08
Physics
Scientific paper
We present a comprehensive investigation of the two broad absorption features observed in the X-ray spectrum of the isolated neutron star 1E1207.4-5209. We have calculated polarization-dependent LTE opacities and equation of state by addressing all the physics relevant to strongly-magnetized plasmas, then we have systematically constructed model atmosphere spectra by solving radiative transfer equations. As a result, only mid-Z element atmospheres composed of Oxygen or Neon at B 10^12 G provide self-consistent atmospheric solutions of appropriate ionization balance and with line widths, strengths and energies consistent with the observations. This work lead to the first identification of the surface composition of isolated neutron stars. We will also discuss important implications of mid-Z element atmosphere.
Hailey Charles J.
Ho Wilson
Mori Kaya
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