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Supernova search in the afterglow of gamma ray burst 011121
Shlomo Dado, Arnon Dar, Alvaro De Rujula
In order to assist in planing the search of supernova (SN) in the late time afterglow (AG) of the gamma ray burst (GRB) 011121 we use the Cannonball Model of GRBs and the observati…
The threat to life from Eta Carinae and gamma ray bursts
Arnon Dar, A. De Rujula
Eta Carinae, the most massive and luminous star known in our galaxy, is rapidly boiling matter off its surface. At any time its core could collapse into a black hole, which may res…
Galactic origin of the alleged extragalactic gamma-ray background radiation
Arnon Dar
The diffuse gamma-ray background radiation (GBR) at high Galactic latitudes could be dominated by inverse Compton scattering (ICS) of cosmic ray (CR) electrons on the cosmic microw…
The Cannonball Model of Gamma Ray Bursts: high-energy neutrinos and -rays
Arnon Dar, A. De Rujula
Recent observations suggest that -ray bursts (GRBs) and their afterglows are produced by jets of highly relativistic cannonballs (CBs), emitted in supernova (SN) explosions. The…
The Host Galaxy and Optical Light Curve of the Gamma-Ray Burst GRB 980703
S. Holland, J. P. U. Fynbo, J. Hjorth +10
We present deep HST/STIS and ground-based photometry of the host galaxy of the gamma-ray burst GRB 980703 taken 17, 551, 710, and 716 days after the burst. We find that the host is…
The Cannonball Model of Gamma Ray Bursts: Lines in the X-Ray Afterglow
Arnon Dar, A. De Rujula
Recent observations suggest that gamma-ray bursts (GRBs) and their afterglows are produced by jets of highly relativistic cannonballs (CBs), emitted in supernova explosions. The fu…