Cyclotron line emission from binary X-ray sources

Details Cyclotron line emission from binary X-ray sources Cyclotron line emission from binary X-ray sources

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978cosp.meetq....i&link_type=abstract

COSPAR, Plenary Meeting, 21st, Innsbruck, Austria, May 29-June 10, 1978, Paper. 8 p. Research supported by the Department of Spa

Physics

Binary Stars, Bremsstrahlung, Cyclotron Radiation, Line Spectra, X Ray Sources, Electron Radiation, Energy Spectra, Magnetic Poles, Neutron Stars, X Ray Binaries, X Ray Stars

Scientific paper

X-ray spectral data concerning an electron-cyclotron emission line centered at 58 keV in the spectrum of Her X-1 are reviewed. It is shown that the observed spectral shape and intensity constrain thermal X-ray production to annular hot spots at the neutron-star surface around the magnetic poles and that extended radiative shocks of the type described by Inoue (1975) and by Basko and Sunyaev (1976) may be ruled out for Her X-1. Evidence is discussed which indicates that magnetic-field variations of about 2 to 3 trillion gauss may occur in the hot spots over short time periods. Possible candidates among X-ray binaries for the observation of X-ray cyclotron emission are briefly considered.

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