Gamma-ray bursts from radio-quiet quasars
N. Schartel 1, 2,
H. Andernach 3, 4 and
J. Greiner 5
Received 17 July 1996 / Accepted 14 January 1997
We study positional coincidences between gamma-ray bursts in the BATSE 3B catalogue and quasars/AGN taken from the Véron-Cetty & Véron compilation. For most classes of AGN, for BL Lac objects and for radio-loud quasars, we find no excess coincidences above random expectation, and we give upper limits for their burst emission rate.
However, surprising evidence is found for a positional correlation between gamma-ray bursts and radio-quiet quasars. A total of 134 selected bursts with a position error radius 1 8 and the nearest and intrinsically brightest radio-quiet quasars ( and ) have a probability of 99.7% to be associated with each other. An analysis of a smaller sample of well-localized interplanetary network gamma-ray burst positions supports this result. This correlation strongly favours the cosmological origin of gamma-ray bursts and enables to estimate its distance scale. The average luminosity of those gamma-ray bursts which we associate directly with radio-quiet quasars is of the order of erg (assuming isotropic emission).
Key words: gamma-rays: bursts AGN: general quasars: general
Send offprint requests to: N. Schartel
© European Southern Observatory (ESO) 1997
Online publication: May 26, 1998