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Synchrotron Emission as the Source of GRB Spectra, Part II: Observations
Nicole M. Lloyd-Ronning, Vahe' Petrosian, Robert D. Preece
We test the models of synchrotron emission presented in Part I of this series (Lloyd & Petrosian, these proceedings) against the distributions and evolution of GRB spectral paramet…
Hard Burst Emission from the Soft Gamma Repeater SGR 1900+14
Peter M. Woods, Chryssa Kouveliotou, Jan van Paradijs +7
We present evidence for burst emission from SGR 1900+14 with a power-law high energy spectrum extending beyond 500 keV. Unlike previous detections of high energy photons during bur…
Average Emissivity Curve of BATSE Gamma-Ray Bursts with Different Intensities
I. G. Mitrofanov, M. L. Litvak, M. S. Briggs +4
Six intensity groups with ~150 BATSE gamma-ray bursts each are compared using average emissivity curves. Time-stretch factors for each of the dimmer groups are estimated with respe…
Average Cosmological Invariant Parameters of Cosmic Gamma Ray Burst
I. G. Mitrofanov, D. S. Anfimov, M. L. Litvak +5
Average cosmological invariant parameters (ACIPs) are calculated for six groups of BATSE cosmic gamma-ray bursts selected by their peak fluxes on the 1.024 s time scale. The ACIPs…
The Role of the BATSE Instrument Response in Creating the Gamma-Ray Burst E-Peak Distribution
J. J. Brainerd, G. Pendleton, R. Mallozzi +2
All gamma-ray bursts are observed to have approximately the same characteristic gamma-ray energy. We show in this article that for bursts in the BATSE data set, this property as me…
Spectral Energy Distributions and Light Curves of GRB 990123 and its Afterglow
T. J. Galama, M. S. Briggs, R. A. M. J. Wijers +38
Gamma-ray bursts (GRBs) are thought to result from the interaction of an extremely relativistic outflow interacting with a small amount of material surrounding the site of the expl…
Analysis of Line Candidates in Gamma-Ray Bursts Observed by BATSE
M. S. Briggs, D. L. Band, R. D. Preece +2
A comprehensive search of BATSE Spectroscopy Detector data from 117 GRBs has uncovered 13 statistically significant line candidates. The case of a candidate in GRB 930916 is discus…