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High resolution hard X-ray spectra of solar and cosmic sourcesHigh resolution hard X-ray observations of a large solar flare and the Crab Nebula were obtained during balloon flights using an array of cooled germanium planar detectors. In addition, high time resolution high sensitivity measurements were obtained with a 300 square cm NaI/CsI phoswich scintillator. The Crab spectrum from both flights was searched without finding evidence of line emission below 200 keV. In particular, for the 73 keV line previously reported a 3 sigma upper limit for a narrow (1 keV FWHM) line .0019 and .0014 ph square cm/sec for the 1979 and 1980 flights, respectively was obtained.
Document ID
19840017519
Acquisition Source
Legacy CDMS
Document Type
Thesis/Dissertation
Authors
Schwartz, R. A.
(California Univ. Berkeley, CA, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Space Radiation
Report/Patent Number
NASA-CR-173561
NAS 1.26:173561
Accession Number
84N25587
Funding Number(s)
CONTRACT_GRANT: NSG-7572
CONTRACT_GRANT: NSG-7592
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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