Cyclotron line emission from binary X-ray sources

Iyengar, V. S. ; Marar, T. M. K. ; Kasturirangan, K. ; Rao, U. R. (1978) Cyclotron line emission from binary X-ray sources COSPAR, Plenary Meeting, 21st, Innsbruck, Austria . p. 497.

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Abstract

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.

Item Type:Article
Source:Copyright of this article belongs to COSPAR, Plenary Meeting, 21st, Innsbruck, Austria.
ID Code:88303
Deposited On:28 Mar 2012 09:47
Last Modified:17 Jul 2012 07:53

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