منابع مشابه
Statistics of Gamma Ray Burst Temporal Asymmetry
We study the temporal asymmetry of over 600 bursts from the BATSE 3B catalog, encompassing a 200-fold range in peak flux. By comparing the rates of rise and fall of the flux near the highest burst peak, we find that about two-thirds of the bursts exhibit a preferred asymmetry in the sense that the flux rises more rapidly than it falls, confirming the conclusions of previous studies employing sm...
متن کاملThe Statistics of Gamma-Ray Burst Lensing
Possibly the only unambiguous verification that gamma-ray bursts (GRBs) are at cosmological distances would be the observation of multiple images of a gravitationally lensed burst. Each images would arrive at a different time, but exhibit identical light curves. We improve upon previous calculations of GRB lensing by using revised cosmological burst models based upon better knowledge of burst s...
متن کاملA New Approach to Statistics of Cosmological Gamma-Ray Bursts
We use a new method of analysis to determine parameters of cosmological gamma-ray bursts (GRBs), assuming that their distribution follows the star-formation history of the universe. Spectral evolution is calculated from the fireball/blast wave model, and used to evaluate the measured peak flux, duration, and νFν peak photon energy for a GRB source occuring at a given redshift and with given val...
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In this letter we explore the suggestion of Quashnock and Lamb (1993) that nearest neighbor correlations among gamma ray burst positions indicate the possibility of burst repetitions within various burst sub-classes. With the aid of Monte Carlo calculations we compare the observed nearest neighbor distributions with those expected from an isotropic source population weighted by the published BA...
متن کاملA New Approach to Statistics of Cosmological Gamma-ray Bursts
We use a new method of analysis to determine parameters of cosmological gamma-ray bursts (GRBs), assuming that their distribution follows the star formation history of the universe. Spectral evolution is calculated from an external shock model for Ðreball/blast-wave evolution and used to evaluate the measured peak Ñux, duration, and peak photon energy for a GRB source occurring at a given redsh...
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ژورنال
عنوان ژورنال: Nature
سال: 1973
ISSN: 0028-0836,1476-4687
DOI: 10.1038/241366a0