ar X iv : a st ro - p h / 97 06 04 5 v 1 4 J un 1 99 7 The Implications of Direct Red - Shift Measurement of γ - ray Bursts

ar X iv : a st ro - p h / 97 06 06 5 v 1 6 J un 1 99 7 Discovery of the X - Ray Afterglow of the Gamma - Ray Burst of February 28 1997

ar X iv : a st ro - p h / 97 06 07 4 v 1 8 J un 1 99 7 The radioastronomical ” Time Machine ” effect and the solution of gamma ray bursts mystery

The possible low-frequency radio emission from the progenitors of gamma ray bursts can experience a delay from tens of seconds to hours on the way to the observer due to the dispersion in galactic and extragalactic plasma, and thus reach the observer as a radio afterglow of the burst. This opens a unique possibility (peculiar ”Time Machine”) of seeing what happened in that place before the cata...

ar X iv : a st ro - p h / 99 04 24 4 v 2 3 J un 1 99 9 Is SGR 1900 + 14 a Magnetar ?

We present RXTE observations of the soft gamma–ray repeater SGR

ar X iv : a st ro - p h / 04 06 56 7 v 1 2 4 Ju n 20 04 1

ar X iv : a st ro - p h / 97 11 35 4 v 1 2 8 N ov 1 99 7 Theoretical Models of Gamma - Ray Bursts 1

Models of gamma ray bursts are reviewed in the light of recent observations of afterglows which point towards a cosmological origin. The physics of fireball shock models is discussed, with attention to the type of light histories and spectra during the gamma-ray phase. The evolution of the remnants and their afterglows is considered, as well as their implications for our current understanding o...