SIMBAD references

2013MNRAS.431.3608D - Mon. Not. R. Astron. Soc., 431, 3608-3617 (2013/June-1)

Average power density spectrum of long GRBs detected with BeppoSAX/GRBM and with Fermi/GBM.


Abstract (from CDS):

From past experiments the average power density spectrum (PDS) of gamma-ray bursts (GRBs) with unknown redshift was found to be modelled from 0.01 to 1 Hz with a power law, f-α, with α broadly consistent with 5/3. Recent analysis of the Swift/Burst Alert Telescope (BAT) catalogue showed analogous results in the 15-150 keV band. We carried out the same analysis on the bright GRBs detected by BeppoSAX/Gamma-ray Burst Monitor (GRBM) and Fermi/Gamma-ray Burst Monitor (GBM). The BeppoSAX/GRBM data, in the energy range 40-700 keV and with 7.8 and 0.5 ms time resolutions, allowed us to explore for the first time the average PDS at very high frequencies (up to 1 kHz) and reveal a break around 1-2 Hz, previously found in Compton Gamma Ray Observatory/Burst and Transient Source Experiment data. The Fermi/GBM data, in the energy band 8-1000 keV, allowed us to explore for the first time the average PDS within a broad energy range. Our results confirm and extend the energy dependence of the PDS slope, according to which harder photons have shallower PDS.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): accretion, accretion discs - turbulence - time - gamma-ray burst:general

VizieR on-line data: <Available at CDS (J/MNRAS/431/3608): table1.dat table2.dat table3.dat table4.dat table5.dat>

Simbad objects: 241

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