8,773 research outputs found
Evidence for a Supernova in the Ic Band Light Curve of the Optical Transient of GRB 970508
Unique data on brightness curves of the OT of GRB 970508 obtained with
the 6-m telescope have been interpreted in the framework of the GRB-SN
(supernovae) connection. The effect must be maximal in the I_c band as OT GRB
970228. The peak absolute (M_B) magnitude of the suggested SN must be around
-19.5 for the OT of GRB 970508. If all or the main part of long GRBs are
associated with SNe, the GRB host galaxies (for ground-based observations, at
least) must be dimmer than the peak magnitude of the SN.Comment: 3 pages, 2 figures, oral presentation on 2nd Rome Workshop on
Gamma-Ray Bursts in the Afterglow Er
The gamma-ray bursts and core-collapse supernovae - global star forming rate peaks at large redshifts
This is a brief review on the first Gamma-Ray Bursts (GRB) optical
identifications - GRB host galaxies and Star Forming Rate (SFR) at relatively
small redshifts (z), on the metallicities of GRB hosts, the similarities and
differences between GRB hosts and galaxies at larger z, and on the SFR and GRB
rate (GRBR) at high z. Evidences of a direct connection between long-duration
GRBs and massive stars explosions (like Core-Collapse Super-Novae - CCSNe) are
presented. Is there a fast decrease in SFR up to z ~10? Some unsolved problems
related to GRBs are discussed: about the high-z GRB host galaxies, the high-z
CCSN-GRB connection, and possible new crucial cosmological tests at high z.Comment: 9 pages, 4 figures, to be published by "World Scientific" in
Proceedings of the XXIX International Workshop on High Energy Physics: New
Results and Actual Problems in Particle & Astroparticle Physics and Cosmology
(HEPFT2013), 26-28 June 2013, Protvino, Moscow region, Russi
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