NDLI: Detailed studies of the nonperiodic time variability of several galactic x-ray sources

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Detailed studies of the nonperiodic time variability of several galactic x-ray sources

Content Provider	NASA Technical Reports Server (NTRS)
Author	Weisskopf, M. C.
Copyright Year	1975
Description	Computer software necessary for the analysis of the time variability of X-ray sources was developed and tested. Seventy-one Uhuru observations of the black hole candidate Cygnus X-1 were also examined. Data show that the X-ray emission can be best represented as arising from randomly occurring X-ray flares with a mean rate of occurrence of 18 flares/sec and a mean cooling time of approximately 1/2 sec. Furthermore data show that photons in the 2 to 16 keV bandwidth arise from within the same flares. Finally, it was found that the mean flare rate and cooling time have been constant since the source underwent a spectral transition in March 1971. Long term variations of several parameters associated with the X-ray emission from this object were studied.
File Size	667570
Page Count	32
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19750013132
Archival Resource Key	ark:/13960/t9w13v44w
Language	English
Publisher Date	1975-04-01
Access Restriction	Open
Subject Keyword	Space Radiation Cygnus Constellation Galaxies Computer Systems Programs Black Holes Astronomy Uhuru Satellite X Ray Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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