منابع مشابه
Recent gamma-ray burst observations from the SROSS-C2 satellite
An experiment tomonitor celestial gamma ray bursts (GRBs) in the energy domain 20 keV–3MeV was launched onboard the SROSS-C2 satellite on 4 May 1994. The experiment is currently operational in space and has recorded twelve candidate events as on 15 February 1995. Ten of these have been confirmed as genuine gamma ray bursts by their near-simultaneous detection by other GRB experiments in interpl...
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High-energy gamma rays are a valuable tool for studying particle acceleration and radiation in the magnetospheres of energetic pulsars. The six or more pulsars seen by CGRO/EGRET show that: the light curves usually have double-peak structures (suggesting a broad cone of emission); gamma rays are frequently the dominant component of the radiated power; and all the spectra show evidence of a high...
متن کاملGAMMA RAY PULSARS Multiwavelength Observations
High-energy gamma rays are a valuable tool for studying particle acceleration and radiation in the magnetospheres of energetic pulsars. The seven or more pulsars seen by instruments on the Compton Gamma Ray Observatory (CGRO) show that: the light curves usually have double-peak structures (suggesting a broad cone of emission); gamma rays are frequently the dominant component of the radiated pow...
متن کاملGamma-Ray Bursts - When Theory Meets Observations
Gamma-Ray Bursts (GRBs) are the brightest objects observed. They are also the most relativistic objects known so far. GRBs occur when an ultrarelativisitic ejecta is slowed down by internal shocks within the flow. Relativistic particles accelerated within these shocks emit the observed gamma-rays by a combination of synchrotron and inverse Compton emission. External shocks with the circumstella...
متن کاملGamma-Ray Burst afterglows: theory and observations
I discuss some theoretical expectations for the synchrotron emission from a relativistic blast-wave interacting with the ambient medium, as a model for GRB afterglows, and compare them with observations. An afterglow flux evolving as a power-law in time, a bright optical flash during and after the burst, and light-curve breaks owing to a tight ejecta collimation are the major predictions that w...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1996
ISSN: 0252-9211
DOI: 10.1017/s0252921100041798