The 4.5 +/- 0.5 Soft Gamma Repeaters in Review
arXiv:astro-ph/9912061 · doi:10.1063/1.1361637
Abstract
Four Soft Gamma Repeaters (SGRs) have now been identified with certainty, and a fifth has possibly been detected. I will review their X-ray and gamma-ray properties in both outburst and quiescence. The magnetar model accounts fairly well for the observations of SGR1806-20 and SGR1900+14, but data are still lacking for SGR1627-41 and SGR0525-66. The locations of the SGRs with respect to their supernova remnants suggest that they are high velocity objects.
This review article will appear in various forms in the following proceedings: 1. X-Ray Astronomy 1999 - Stellar Endpoints, AGN and the X-Ray Background (Astrophysical Letters and Communications, 2000) 2. Proceedings of the 5th Compton Symposium (AIP Press, 2000) 3. Proceedings of the 5th Huntsville GRB Symposium (AIP Press, April 2000)