Results 41 to 50 of about 257,446 (367)
International Astronomical Union Colloquium, 2005 SummarySince their discovery in 1967 Gamma-ray bursts (GRBs) have been puzzling to astrophysicists. With the advent of a new generation of X–ray satellites in the late 90’s, it was possible to carry out deep multi-wavelength observations of the counterparts associated with the long duration GRBs class just within a few hours of occurrence, thanks to ...
openaire +4 more sources
GRB 060218/SN 2006aj: A Gamma-Ray Burst and Prompt Supernova at z=0.0335 [PDF]
, 2006 We report the imaging and spectroscopic localization of GRB 060218 to a low-metallicity dwarf starburst galaxy at z = 0.03345 +/- 0.00006. In addition to making it the second nearest gamma-ray burst known, optical spectroscopy reveals the earliest ...
An, D. +4 more
core +3 more sources
THE COSMIC GAMMA-RAY BURSTS [PDF]
The Ninth Marcel Grossmann Meeting, 2002 Cosmic gamma-ray bursts are one of the great frontiers of astrophysics today. They are a playground of relativists and observers alike. They may teach us about the death of stars and the birth of black holes, the physics in extreme conditions, and help us probe star formation in the distant and obscured universe. In this review we summarise some of the
S. G. Djorgovski +14 more
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Gamma-ray burst afterglows [PDF]
, 2006 Extended, fading emissions in multi-wavelength are observed following Gamma-ray bursts (GRBs). Recent broad-band observational campaigns led by the Swift Observatory reveal rich features of these GRB afterglows.
Zhang, Bing
core +1 more source
Gamma-Ray Burst Jet Breaks Revisited [PDF]
Astrophysical Journal, 2018 Gamma-ray Burst (GRB) collimation has been inferred with the observations of achromatic steepening in GRB light curves, known as jet breaks. Identifying a jet break from a GRB afterglow light curve allows a measurement of the jet opening angle and true ...
Xiang-Gao Wang +6 more
semanticscholar +1 more source
AGILE detection of delayed gamma-ray emission from GRB 080514B [PDF]
, 2008 GRB 080514B is the first gamma ray burst (GRB), since the time of EGRET, for which individual photons of energy above several tens of MeV have been detected with a pair-conversion tracker telescope.
A. Argan +72 more
core +2 more sources
A DECADE OF SHORT-DURATION GAMMA-RAY BURST BROADBAND AFTERGLOWS: ENERGETICS, CIRCUMBURST DENSITIES, AND JET OPENING ANGLES [PDF]
, 2015 We present a comprehensive catalog and analysis of broadband afterglow observations for 103 short-duration gamma-ray bursts (GRBs), comprised of all short GRBs from 2004 November to 2015 March with prompt follow-up observations in the X-ray, optical ...
W. Fong +4 more
semanticscholar +1 more source
Observational constraints on the structure of gamma-ray burst jets [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Motivated by GW170817 we examine constraints that observations put on the angular structure of long gamma-ray burst (GRB) jets. First, the relatively narrow observed distribution of $E_{X}/E_{\gamma}$ (the isotropic equivalent early X-ray afterglow to ...
P. Beniamini, E. Nakar
semanticscholar +1 more source
THE THIRD FERMI GBM GAMMA-RAY BURST CATALOG: THE FIRST SIX YEARS [PDF]
, 2016 Since its launch in 2008, the Fermi Gamma-ray Burst Monitor (GBM) has triggered and located on average approximately two γ-ray bursts (GRBs) every three days.
P. N. Bhat +32 more
semanticscholar +1 more source
Nanolensing of Gamma‐Ray Bursts [PDF]
The Astrophysical Journal, 2003 28 pages, 12 figures, matches version accepted by ApJ (fixed minor error in fold lens mapping)
Mark Walker +3 more
openaire +3 more sources