The FWHM of Local Pulses and the Corresponding Power-Law Index of Gamma-Ray Burst FRED Pulses
نویسندگان
چکیده
منابع مشابه
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 RS00) approximately half of these decays can be described by a power law ∝ 1/(time). This happens for cases when the hardness-fluence correlation (HFC) is an exponential function, Epk(Φ) ∝ e −Φ/Φ0 , and the hardness-intensity correlation (HIC) is a pow...
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Employing a sample presented by Kaneko et al. (2006) and Kocevski et al. (2003), we select 42 individual tracking pulses (here we defined tracking as the cases in which the hardness follows the same pattern as the flux or count rate time profile) within 36 Gamma-ray Bursts (GRBs) containing 527 time-resolved spectra and investigate the spectral hardness, Epeak (where Epeak is the maximum of the...
متن کاملSearch for Relativistic Curvature Effects in Gamma-Ray Burst Pulses
We analyze the time profiles of individual gamma-ray burst (GRB) pulses, that are longer than 2 s, by modelling them with analytical functions that are based on physical first principles and well-established empirical descriptions of GRB spectral evolution. These analytical profiles are independent of the emission mechanism and can be used to model both the rise and decay profiles allowing for ...
متن کاملOn the Variety of the Spectral and Temporal Behaviors of Long Gamma-Ray Burst Pulses
We find and study a variety of the spectral-temporal behavior during the decay phase of the light curve of long and bright pulse structures in gamma-ray bursts (GRBs). Even though only a small fraction of observed bursts exhibit such pulses, these are of interest to study as they reflect individual emission episodes during the burst. We have previously found that for about half of these decays,...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2005
ISSN: 0004-637X,1538-4357
DOI: 10.1086/496917