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BATSE observations of 3C273The quasar 3C273 has been detected by all instruments on CGRO. The emission from this source is monitored continuously by BATSE using Earth occultation. We present results of a preliminary analysis of BATSE data, including light curves of the 3C273 flux covering approximately 150 days in the interval April-August 1991 and approximately 350 days in the interval July 1992-April 1993. The source intensity in the energy range 50-300 keV is typically approx. 0.002 ph cm(exp -2)s(exp -1). We find weak evidence for variations of as much as a factor of 3 in the intensity. We derive spectral parameters of 3C273 during the intervals TJD 8422-8435 (15-28 June 1991) and TJD 8532-8546 (3-17 October 1991) for comparison with other CGRO instruments.
Document ID
19950006050
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Paciesas, W.S. (Alabama Univ. Huntsville, AL, United States)
Mallozzi, R. S. (Alabama Univ. Huntsville, AL, United States)
Pendleton, G. N. (Alabama Univ. Huntsville, AL, United States)
Harmon, B. A. (Alabama Univ. Huntsville, AL, United States)
Wilson, C. A. (Alabama Univ. Huntsville, AL, United States)
Zhang, S. N. (Alabama Univ. Huntsville, AL, United States)
Fishman, G. J. (Alabama Univ. Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1994
Subject Category
Astronomy
Report/Patent Number
NAS 1.26:196185
NASA-CR-196185
Accession Number
95N12463
Funding Number(s)
CONTRACT_GRANT: NAS8-38609
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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