Comptonization in a radiation-dominated shock, and the spectra of X-ray pulsars

Details Comptonization in a radiation-dominated shock, and the spectra of X-ray pulsars Comptonization in a radiation-dominated shock, and the spectra of X-ray pulsars

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pazh....8..612l&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 8, Oct. 1982, p. 612-622) Soviet Astronomy Letters (ISSN 0360-0327), vol. 8, Sept.-Oct.

Astronomy and Astrophysics

Astronomy

1

Compton Effect, Pulsars, Shock Wave Propagation, Stellar Mass Accretion, Stellar Spectra, X Ray Spectra, Electron Energy, Electron Scattering, Emission Spectra, Magnetohydrodynamic Flow

Scientific paper

If a neutron star is accreting material at a high rate, much of the accretion energy will be released in a radiation-dominated shock. The radiation will arrest the plasma flow and withdraw energy. As the flow is braked, its electrons will multiply scatter the photons, forming distinctive radiation spectra and causing the electrons to become heated. The hard-photon tail in X-ray pulsar spectra is presumably formed by such a mechanism. These spectra have a small spectral index (alpha in the range between 0 and 1) and an exponential cutoff for (h) x (nu) approximately equal to or greater than 100 keV.

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