Flares in Gamma Ray Bursts

G. Chincarini*, J. Mao, F. Pasotti, R. Margutti, C. Guidorzi, M. G. Bernardini

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The flare activity that is observed in GRBs soon after the prompt emission with the XRT (0.3-10 KeV) instrument on Board of the Swift satellite is leading to important clues in relation to the physical characteristics of the mechanism generating the emission of energy in Gamma Ray Bursts. We will briefly refer to the results obtained with the recent analysis [1] and [2] and discuss the preliminary results we obtained with a new larger sample of GRBs [limited to early flares] based on fitting of the flares using the Norris 2005 profile. We find, in agreement with previous results, that XRT flares follow the main characteristics observed in [3] for the prompt emission spikes. The estimate of the flare energy for the subsample with redshift is rather robust and an attempt is made, using the redshisft sample, to estimate how the energy emitted in flares depends on time. We used a H0=70km/s/Mpc, Ω Λ=0.7, Ωm=0.3 cosmology.

Original languageEnglish (US)
Title of host publication2008 Nanjing Gamma-Ray Burst Conference
Number of pages6
StatePublished - 2008
Event2008 Nanjing Gamma-Ray Burst Conference - Nanjing, China
Duration: Jun 23 2008Jun 27 2008

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other2008 Nanjing Gamma-Ray Burst Conference


  • γ-ray burst
  • γ-ray sources

ASJC Scopus subject areas

  • General Physics and Astronomy


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