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Pulsed high-energy gamma rays from PSR 1055-52The Energetic Gamma Ray Experiment Telescope (EGRET) aboard the Compton Gamma Ray Observatory has detected a high-energy gamma-ray source at a position coincident with that of the radio pulsar PSR 1055-52. Analysis of the EGRET data at the radio pulsar period of 197 ms has revealed pulsed gamma-radiation at energies above 300 MeV, making PSR 1055-52 the fifth detected high-energy gamma-ray pulsar. The pulsed radiation from PSR 1055-52 has a very hard photon spectral index of -1.18 +/- 0.16 and a high efficiency for converting its rotational energy into gamma-rays. No unpulsed emission was observed.
Document ID
19930068022
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Fierro, J. M.
(Stanford Univ. CA, United States)
Bertsch, D. L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brazier, K. T.
(Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Chiang, J.
(Stanford Univ. CA, United States)
D'Amico, N.
(Palermo Univ.; CNR, Ist. di Radioastronomia, Bologna, Italy)
Fichtel, C. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hartman, R. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hunter, S. D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Johnston, S.
(Australia Telescope National Facility Epping, United States)
Kanbach, G.
(Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Date Acquired
August 16, 2013
Publication Date
August 10, 1993
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 413
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A52019
Funding Number(s)
CONTRACT_GRANT: NAG5-1605
CONTRACT_GRANT: BMFT-50-QV-9065
CONTRACT_GRANT: NAG5-1742
CONTRACT_GRANT: NAS5-31210
Distribution Limits
Public
Copyright
Other

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