NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Observations of rapid X-ray flaring from Cygnus X-1SAS-3 observations of Cyg X-1 in October 1976 show the source to be in a highly active state exhibiting rapid continual flaring on time scales of 1 to 10 s. The flares exhibit temporal structure and variable spectra, but their mean spectrum is similar to that of the source as a whole. The characteristic time scales of the source are 2 to 4 times longer than those previously observed. It is suggested that this active phase of Cyg X-1 signals a modified accretion-disk structure. The flares may result from correlated bunches of the same 'shots ' which are thought to explain the rest of the short-time-scale variability of the source. While the flares superficially resemble X-ray bursts, they are distinct in several respects.
Document ID
19770052279
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Canizares, C. R.
(MIT Cambridge, Mass., United States)
Oda, M.
(MIT, Cambridge, Mass.; Tokyo, University Tokyo, Japan)
Date Acquired
August 9, 2013
Publication Date
June 15, 1977
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
77A35131
Funding Number(s)
CONTRACT_GRANT: NAS5-11450
Distribution Limits
Public
Copyright
Other

Available Downloads

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