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On the Feasibility of Independent Detections of Optical Afterglows of GRBs
The recent detection of optical afterglows (OAs, optical delayed emission) and optical transients (OTs, optical prompt emission) of gamma ray bursts... -
Tools for Gamma-Ray Burst Data Mining
Statisticalevidence exists for two or more gamma-ray burst (GRB) subclasses. Pattern recognition algorithms also find this. However, not all... -
A Variety of Decays of Gamma-Ray Burst Pulses
The main target of this study is the GRB light curve during the decay phase of long, bright pulses. As shown by Ryde & Svensson (2000; hereafter... -
Neutrino Astrophysics with the MACRO Detector
A sample of 1197 neutrino induced upward-going muons is used to look for point-like sources and for space-time correlations with BATSE and BeppoSAX... -
A Preview of the Swift UVOT Capabilities: Imaging and Lightcurves from XMM-Newton OM
The Swift MIDEX mission, scheduled for launch on 2003, is expected to capture... -
Discovery of a Redshifted Iron K-Line in the X-Ray Afterglow of GRB 000214
We report on the BeppoSAX observation of the X-ray afterglow of GRB 000214 (“Valentine’s Day Burst”). A strong emission line is detected (3... -
The Light Curves of GRB 990123 and GRB 990510
We have collected all published photometry for GRBs 990123 and 990510, the first two gamma-ray bursts where breaks were observed in their afterglow... -
Optical Observations of the Dark Gamma-Ray Burst GRB 000210
We report on opticalobserv ations on GRB 000210 obtained with the 2.56-m Nordic Optical Telescope and the 1.54-m Danish Telescope starting 12.4 hours... -
Physical Constraints from Broadband Afterglow Fits: GRB000926 as an Example
We develop a model to fit the broadband afterglows of GRBs from the intrinsic parameters of the fireball’s synchrotron emission, and apply it to a... -
Observations of Gamma-Ray Bursts with the Rossi X-Ray Timing Explorer
The role of the Rossi X-ray Timing Explorer (RXTE) in the study of Gamma-ray Bursts (GRBs) is reviewed. Through April 2001, the All-Sky Monitor (ASM)... -
Gamma-Ray Burst Models: The Central Engine
Twinkle, twinkle superstar. How I wonder what you are. [12] -
The Close Environment of GRB
We discuss three aspects of the interaction between GRB and their immediate surroundings. Pair production induced by the initial gamma-rays in the... -
A Deep, High-Resolution Imaging Survey of GRB Host Galaxies
We have begun a survey of GRB host galaxies using HST/STIS to obtain very deep, high-resolution images. The primary aims are to constrain progenitor... -
Determining the Gamma-Ray Burst Rate as a Function of Redshift
We exploit the 14 gamma-ray bursts (GRBs) with known redshifts z and the 7 GRBs for which there are constraints on z to determine the GRB rate... -
Progenitors of GRBs Originated in the Dense Star Clusters
The suggestion formulated in the title of this paper arised first to explain the origin of the giant (170-300 pc in radii) stellar arcs in the region... -
Theory of GRB Afterglow
The most interesting current open question in the theory of GRB afterglow is the propagation of jetted afterglows during the sideway expansion phase.... -
Effects of Free Neutrons on Gamma-Ray Bursts
We consider a general case of nucleon (neutrons + protons) - loaded fireballs. In our analysis of the relative motion of neutrons and protons in the... -
AGILE and Gamma-Ray Bursts
The AGILE astrophysics mission planned to be operational in 2003 will significantly contribute to the study of Gamma-Ray Bursts. AGILE is equipped... -
Astroparticle Physics with the L3+C Detector
The L3+C detector, which was located at the CERN electron-positron collider, LEP, has been used to collect a total of... -
Alpha: A Constant That Is Not a Constant?
We review the observational information on the constancy of the fine structure constant...