X-ray emission of GRBs: What is the light curve morphology telling us?

M. G. Bernardini*, R. Margutti, E. Zaninoni, G. Chincarini

*Corresponding author for this work

Research output: Contribution to journalConference article

3 Scopus citations

Abstract

The analysis and classification of a sample of X-ray light curves of 64 long Gamma-ray bursts (GRB) observed by Swift/XRT without flaring activity reveals indeed similarities among different parts of the light curves. In this paper we focus on the shallow decays phases: we show that a spinning-down magnetar that powers the forward shock can quantitatively account for the shallow decay properties. In particular we demonstrate that this model can account for the plateau luminosity vs. end time anticorrelation found by Dainotti et al. (2008, 2010).

Original languageEnglish (US)
Pages (from-to)226-229
Number of pages4
JournalMemorie della Societa Astronomica Italiana, Supplementi - Journal of the Italian Astronomical Society, Supplement
Volume21
StatePublished - Jan 1 2012
EventGRBs as Probes: From the Progenitors Environment to the High - Como, Italy
Duration: May 16 2011May 20 2011

Keywords

  • Gamma-ray: bursts
  • Radiation mechanism: non-thermal
  • X-rays

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiology Nuclear Medicine and imaging
  • Astronomy and Astrophysics
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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