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The pulse profile of the Crab pulsar in the energy range 45 keV-1.2 MeVThe Crab Nebula pulsar (PSR 0531+21) is the best studied and most intense of the nontransient X-ray pulsars. However, since its spectrum drops rapidly with energy, a well-resolved pulse profile has not previously been obtained above 200 keV. In the hard X-ray and low-energy gamma-ray region, an accurate pulse profile can be obtained with a balloon-borne detector of sufficient area during a single transit of the source. A new measurement of the pulse profile of PSR 0531+21 in the energy range above 45 keV obtained with a large-area scintillation detector array is reported. The detector array was flown on a balloon launched from Palestine, Texas on 1980 October 6, reaching a float altitude 4.5 g/sq cm at 0230 UTC October 7. The primary objective of the experiment was to detect and study weak gamma-ray bursts.
Document ID
19830053420
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Wilson, R. B.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Fishman, G. J.
(NASA Marshall Space Flight Center Space Sciences Laboratory, Huntsville, AL, United States)
Date Acquired
August 11, 2013
Publication Date
June 1, 1983
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 269
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
83A34638
Funding Number(s)
CONTRACT_GRANT: NAS8-34137
Distribution Limits
Public
Copyright
Other

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