SIMBAD references

2009MNRAS.396..935S - Mon. Not. R. Astron. Soc., 396, 935-945 (2009/June-3)

Where are Swift γ-ray bursts beyond the `synchrotron deathline'?


Abstract (from CDS):

We study time-resolved spectra of the prompt emission of Swift γ-ray bursts (GRB). Our goal is to see if previous BATSE claims of the existence of a large amount of spectra with the low-energy photon indices harder than 2/3 are consistent with Swift data. We perform a systematic search of the episodes of the spectral hardening down to the photon indices ≤2/3 in the prompt emission spectra of Swift GRBs. We show that the data of the Burst Alert Telescope (BAT) instrument on board of Swift are consistent with BATSE data, if one takes into account differences between the two instruments. Much lower statistics of the very hard spectra in Swift GRBs are explained by the smaller field of view and narrower energy band of the BAT telescope.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): radiation mechanisms: non-thermal - gamma-rays: bursts - gamma-rays: observations

Simbad objects: 76

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