Identification of two classes of gamma-ray bursts
- C. KouveliotouC. Meegan G. Pendleton
- 20 August 1993
Physics
We have studied the duration distribution of the gamma-ray bursts of the first BATSE catalog. We find a bimodality in the distribution, which separates GRBs into two classes: short events (less than…
THE FERMI GAMMA-RAY BURST MONITOR
- C. MeeganG. Lichti C. Wilson-Hodge
- 4 August 2009
Physics
The Gamma-Ray Burst Monitor (GBM) will significantly augment the science return from the Fermi Observatory in the study of gamma-ray bursts (GRBs). The primary objective of GBM is to extend the…
An unusual supernova in the error box of the γ-ray burst of 25 April 1998
- T. GalamaP. Vreeswijk P. Ianna
- 12 June 1998
Physics
The discovery of afterglows associated with γ-ray bursts at X-ray, optical and radio wavelengths and the measurement of the redshifts of some of these events, has established that γ-ray bursts lie at…
Evidence for a Canonical Gamma-Ray Burst Afterglow Light Curve in the Swift XRT Data
- J. NousekC. Kouveliotou A. Wells
- 15 August 2005
Physics
We present new observations of the early X-ray afterglows of the first 27 gamma-ray bursts (GRBs) well observed by the Swift X-Ray Telescope (XRT). The early X-ray afterglows show a canonical…
Attributes of Pulses in Long Bright Gamma-Ray Bursts
- J. NorrisR. Nemiroff G. Fishman
- 1 March 1996
Physics
A limit on the variation of the speed of light arising from quantum gravity effects
- A. AbdoM. Ackermann M. Ziegler
- 19 November 2009
Physics
The detection of emission up to ∼31 GeV from the distant and short GRB, and no evidence for the violation of Lorentz invariance is found, which disfavour quantum-gravity theories in which the quantum nature of space–time on a very small scale linearly alters the speed of light.
An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy
Multiwavelength observations of a unique γ-ray–selected transient detected by the Swift satellite, accompanied by bright emission across the electromagnetic spectrum, and whose properties are unlike any previously observed source are presented.
Long γ-ray bursts and core-collapse supernovae have different environments
- A. FruchterA. Levan S. Woosley
- 20 March 2006
Physics
When massive stars exhaust their fuel, they collapse and often produce the extraordinarily bright explosions known as core-collapse supernovae. On occasion, this stellar collapse also powers an even…
An X-ray pulsar with a superstrong magnetic field in the soft γ-ray repeater SGR1806 − 20
- C. KouveliotouC. Kouveliotou T. Murakami
- 21 May 1998
Physics
Soft γ-ray repeaters (SGRs) emit multiple, brief (∼0.1-s), intense outbursts of low-energy γ-rays. They are extremely rare—three are known in our Galaxy and one in the Large Magellanic Cloud. Two…
A very energetic supernova associated with the γ-ray burst of 29 March 2003
- J. HjorthJ. Sollerman R. Wijers
- 17 June 2003
Physics
Over the past five years evidence has mounted that long-duration (>2 s) γ-ray bursts (GRBs)—the most luminous of all astronomical explosions—signal the collapse of massive stars in our Universe. This…
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