Equation of state and opacities for hydrogen atmospheres of strongly magnetized cooling neutron stars

1998/03/05 by A. Y. Potekhin, Potekhin, A. Y., Yu. A. Shibanov +3
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Geophysics and Gravity Measurements #Plasma Physics (physics.plasm-ph) #Pulsars and Gravitational Waves Research #Solar and Space Plasma Dynamics #astro-ph #physics.plasm-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9803046

4 pages, 2 embedded figures, LaTeX using epsf.sty, neu.sty, and tron.sty (included). PostScript version also available at http://www.ioffe.rssi.ru/dtastrop.html Published in "Neutron Stars and Pulsars," eds. N. Shibazaki et al. (Universal Academy Press, Tokyo, 1998) p. 161

openalex publication_date 1998/03/05 · arxiv created 1999/03/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study partially ionized hydrogen plasma at temperatures T = 10^5.5-10^6.5 K and magnetic fields B = 10¹²-10¹³ G, typical of photospheres of isolated neutron stars. We construct an analytic model of the plasma free energy and derive a generalized Saha equation which is used to obtain the opacities.

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