Hard X rays with a power law spectrum from a neutron star accreting through the relativistic gap

Details Hard X rays with a power law spectrum from a neutron star accreting through the relativistic gap Hard X rays with a power law spectrum from a neutron star accreting through the relativistic gap

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..477k&link_type=abstract

In ESA, The 23rd ESLAB Symposium on Two Topics in X ray Astronomy. Volume 1: X Ray Binaries p 477-478 (SEE N90-25711 19-89)

Astronomy and Astrophysics

Astronomy

2

Mass Transfer, Neutron Stars, Stellar Mass Accretion, Stellar Models, Stellar Spectra, Accretion Disks, Relativistic Theory, Spectrum Analysis, Stellar Evolution, X Ray Binaries, X Ray Spectra

Scientific paper

A weakly magnetized neutron star of radius substantially smaller than the radius of the marginally stable orbit is investigated. It is found to emit hard X rays if it undergoes disk accretion with mass transfer rates typical in X ray binaries. A typical spectrum is shown; between approx. 6 KeV and approx. 200 KeV, it is a power law of photon index alpha = -2.2.

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