NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Cyclotron emission near stellar mass black holesCyclotron emission in the inner regions of an accretion disk around a matter accreting black hole can be appreciable. In the case of the X-ray source Cyg X-1, cyclotron emission may provide the soft photons needed for 'Comptonization' to produce high energy X-rays. The inverse correlation between the fluxes of high energy and low energy X-rays during the 'high' and 'low' states of Cyg X-1, may be understood as a result of the variation of the rate of accretion and the Compton scattering of the cyclotron photons. In the case of the X-ray source GX 339-4, the observed optical flux during the high states does not seem to be due to cyclotron emission, but probably due to reprocessing of high energy X-rays by the outer regions of the disk.
Document ID
19850031918
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Apparao, K. M. V.
(NASA Marshall Space Flight Center Space Science Laboratory, Huntsville, AL; Tata Institute of Fundamental Research, Bombay, India)
Date Acquired
August 12, 2013
Publication Date
October 1, 1984
Publication Information
Publication: Astronomy and Astrophysics
Volume: 139
Issue: 2, Oc
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
85A14069
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available