Accreting X-ray pulsar atmospheres heated by Coulomb deceleration of protons

Details Accreting X-ray pulsar atmospheres heated by Coulomb deceleration of protons Accreting X-ray pulsar atmospheres heated by Coulomb deceleration of protons

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...266l..33m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 266, Mar. 1, 1983, p. L33-L37.

Astronomy and Astrophysics

Astrophysics

39

Coulomb Collisions, Proton Beams, Pulsars, Stellar Atmospheres, Stellar Mass Accretion, X Ray Sources, Atmospheric Temperature, Deceleration, Energy Spectra, Magnetic Stars, Radiative Transfer, Stellar Models

Scientific paper

Results are presented from detailed self-consistent models of accreting magnetized neutron star atmospheres, heated by the gradual deceleration of infalling protons via Coulomb encounters. The temperature and density gradients are calculated assuming momentum and energy balance, coupled with the radiative transfer for two polarizations. The cyclotron resonance effects were treated approximately. These models are characterized by power-law energy spectra, with single pulses at higher frequencies and multiple pulses at lower ones for some aspect angles, as well as a phase-dependent spectral index.

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