The Gamma Ray Bursts GRB970228 and GRB970508: What Have We Learnt?
Abstract
We examine what we regard as key observational results on GRB 970228 and GRB 970508 and show that the accumulated evidence strongly suggests that gamma-ray bursts (GRBs) are cosmological fireballs. We further show that the observations suggest that GRBs are not associated with the nuclear activity of active galactic nuclei, and that late-type galaxies are more prolific producers of GRBs. We suggest that GRBs can be used to trace the cosmic history of the star-formation rate. Finally, we show that the GRB locations with respect to the star-forming regions in their host galaxies and the total burst energies can be used to distinguish between different theoretical models for GRBs.
Keywords
Cite
@article{arxiv.astro-ph/9712097,
title = {The Gamma Ray Bursts GRB970228 and GRB970508: What Have We Learnt?},
author = {Mario Livio and Kailash C. Sahu and Larry Petro and Andrew Fruchter and Elena Pian and F. Duccio Macchetto and Jan van Paradijs and Chryssa Kouveliotou and Paul J. Groot and Titus J. Galama},
journal= {arXiv preprint arXiv:astro-ph/9712097},
year = {2009}
}
Comments
7 pages (with 2 embedded figures), to be published in the Proceedings of the Fourth Huntsville Gamma-Ray Burst Symposium, held Sep 15-20, 1997, Huntsville, Alabama