The formation of the continuum spectrum in X-ray pulsars

Details The formation of the continuum spectrum in X-ray pulsars The formation of the continuum spectrum in X-ray pulsars

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...158..305k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 158, no. 1-2, April 1986, p. 305-309.

Statistics

7

Compton Effect, Continuous Spectra, Emission Spectra, Pulsars, X Ray Binaries, Absorptivity, Quantum Statistics, Thomson Scattering

Scientific paper

It is suggested that the flat spectrum (in intensity) observed as the phase averaged emission in the range 2 - 20 keV of some X-ray pulsars - notably Her X-1 - is just the optically thin emission from resonant double Compton scattering. Production of photons in this range also involves the participation of two cyclotron photons whose occupation numbers are parameterized by a Bose-Einstein distribution. Estimates are presented in which the required flux is emitted from a hot spot covering a few per cent of the neutron star's surface with a thickness of about one Thomson depth and a temperature of 10 keV.

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