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cosmic gamma-ray bursts from batse - another great debateThe BATSE detectors aboard Compton Observatory record about one cosmic gamma-ray burst (GRB) per day. Preliminary data analysis shows a highly isotropic sky map and a nonuniform brightness distribution. Anisotropies expected from a Galactic neutron star population, the most frequently considered source model, did not emerge from the data. Taken at face value, the data seem to suggest a heliocentric solution of the GRB puzzle. The observed isotropy can be achieved if sources are either very near or extragalactic. Pop I neutron stars in the disk do not simultaneously fit sky and brightness distributions. A possibility are sources in an extended Galactic halo with scale length large enough to avoid strong anisotropies due to the solar offset from the Galactic center. If GRBs are located in an extended halo we ask whether the neutron star paradigm can survive. We show that the recently discovered high velocity radio pulsars may provide a natural source population for GRBs. If these pulsars formed in the halo, as suggested by the radio data, the possibility arises that GRBs and high velocity pulsars are two related phenomena that provide observational evidence of the dark Galactic corona. We also discuss cosmological redshift constraints that follow from the observed brightness distribution.
Document ID
19930056074
Document Type
Conference Paper
Authors
Hartmann, Dieter H.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
The, Lih-Sin
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Clayton, Donald D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schnepf, Neil G.
(Clemson Univ. SC, United States)
Linder, Eric V.
(New Mexico State Univ. Las Cruces, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Gamma-ray bursts; Proceedings of the Workshop, Univ. of Alabama, Huntsville, Oct. 16-18, 1991 (A93-40051 16-93)
Subject Category
SPACE RADIATION
Funding Number(s)
CONTRACT_GRANT: NAG5-1578
Distribution Limits
Public
Copyright
Other

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IDRelationTitle19930056054Analytic PrimaryGamma-ray bursts; Proceedings of the Workshop, Univ. of Alabama, Huntsville, Oct. 16-18, 1991