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A search of the SAS-2 data for pulsed gamma-ray emission from radio pulsarsData from the SAS-2 high-energy (above 35 MeV) gamma-ray experiment have been examined for pulsed emission from each of 75 radio pulsars which were viewed by the instrument and which have sufficiently well-defined period and period-derivative information from radio observations to allow for gamma-ray periodicity searches. When gamma-ray arrival times were converted to pulsar phase using the radio reference timing information, two pulsars, PSR 1747-46 and PSR 1818-04, showed positive effects, each with a probability of less than 1 part in 10,000 of being a random fluctuation in the data for that pulsar. These are in addition to PSR 0531+21 and PSR 0833-45, previously reported. The results of this study suggest that gamma-ray astronomy has reached the detection threshold for gamma-ray pulsars and that work in the near future should give important new information on the nature of pulsars.
Document ID
19770027899
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Ogelman, H.
(Middle East Technical University Ankara, Turkey)
Fichtel, C. E.
(Middle East Technical Univ. Ankara, Turkey)
Kniffen, D. A.
(Middle East Technical Univ. Ankara, Turkey)
Thompson, D. J.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 8, 2013
Publication Date
October 15, 1976
Publication Information
Publication: Astrophysical Journal
Volume: 209
Subject Category
Astrophysics
Accession Number
77A10751
Distribution Limits
Public
Copyright
Other

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