Luminosities and Space Densities of Short Gamma-Ray Bursts

Details Luminosities and Space Densities of Short Gamma-Ray Bursts Luminosities and Space Densities of Short Gamma-Ray Bursts

2001-08-29

arxiv.org/abs/astro-ph/0108459v1

published in ApJ 559,L79,2001

Astronomy and Astrophysics

Astrophysics

9 pages, accepted for publication in Astrophysical Journal Letters

Scientific paper

10.1086/324011

Using the Euclidean value of as a cosmological distance indicator, we derive the isotropic-equivalent characteristic peak luminosity of gamma-ray bursts both longer and shorter than 2 s. The short bursts have essentially the same characteristic peak luminosity of 0.6 x 10^51 erg (0.064s)^-1 as do the long bursts. This may apply also to bursts with durations less than 0.25 s. The local space density of short bursts is around three times lower than that of long bursts.

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