A possible connection between gamma–ray bursts and single black holes

G. M. Beskin; A. Shearer; A. Golden; C. Bartolini; A. Guarnieri; A. Piccioni; N. Masetti

doi:10.1051/aas:1999329

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Volume 138 / No 3 (September 1999)

Astron. Astrophys. Suppl. Ser., 138 3 (1999) 509-510

Abstract

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Issue		Astron. Astrophys. Suppl. Ser. Volume 138, Number 3, September 1999 Gamma-Ray Bursts in the Afterglow Era Contents Rome, November 3-6, 1998


Page(s)		509 - 510
DOI		https://doi.org/10.1051/aas:1999329
Published online		15 September 1999

Astron. Astrophys. Suppl. Ser. 138, 509-510 (1999)

A possible connection between gamma–ray bursts and single black holes

G. M. Beskin¹, A. Shearer², A. Golden², C. Bartolini³, A. Guarnieri³, A. Piccioni³ and N. Masetti⁴

¹ Special Astrophysical Observatory, Russia
² University of Galway, Ireland
³ Dipartimento di Astronomia, Università di Bologna, via Zamboni 33, I-40126 Bologna, Italy
⁴ Istituto Te.S.R.E., CNR, Bologna, Italy

Received: 18 December 1998
Accepted: 1 July 1999

Abstract

We consider Single Black Holes (SBHs) of $10^3\ M_\odot$ as possible parent objects for cosmological GRBs. The latter are the result of the energy release of SBHs magnetosphere inhomogeneities. The percolation nature of this release yields a unique power law for the GRBs energy distribution that is $E^{-\beta}$ (with $\beta= 1.7 - 1.8$ ), i.e. the same observed in solar flares, flare stars and X–ray sources. The number of GRBs per year per galaxy is about $10^{-2} - 10^{-1}$ with total energy $10^{47} - 10^{50}$ ergs for beaming factor of about $10^{-4} - 10^{-5}$ .

Key words: black hole physics, gamma-rays: bursts