Physical Limits of Different Models of Cosmic Gamma-Ray Bursts

Details Physical Limits of Different Models of Cosmic Gamma-Ray Bursts Physical Limits of Different Models of Cosmic Gamma-Ray Bursts

2004-01-19

arxiv.org/abs/astro-ph/0401369v1

Astronomy and Astrophysics

Astrophysics

12 pages, 11 figures, Invited paper presented at the ``Frascati Workshop 2003'', Vulcano, Italy, 26-31 May, 2003

Scientific paper

The present common view about GRB origin is related to cosmology, what is based on statistical analysis, and on measurements of the redshifts in the GRB optical afterglows of long GRB. No correlation is found between redshifts, GRB spectrum, and total GRB fluence. Comparison of KONUS and BATSE data about statistics and hard X-ray lines is done, and some differences are noted. Hard gamma-ray afterglows, prompt optical spectra, hard X-ray lines measurements could be important for farther insight into GRB origin. Possible possible connection of short GRB with soft gamma repeaters is discussed.

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