A Correlated Optical and Gamma Emission from GRB 081126A

B. Gendre, A. Klotz, J. L. Atteia, M. Boer, D. M. Coward, A. C. Imerito

Research output: Chapter in Book/Conference paperConference paper

Abstract

We present an analysis of time-resolved optical emissions observed from the gamma ray burst ORB 081126 during the prompt phase. The analysis employed time-resolved photometry using optical data obtained by the TAROT telescope, BAT data from the Swift spacecraft and time resolved spectroscopy at high energies from the GBM instrument onboard the Fermi spacecraft. The optical emission of GRB 081126 is found to be compatible with the second gamma emission pulse shifted by a positive time-lag of 8.4 +/- 3.9 sec. This is the first well resolved observation of a time lag between optical and gamma emissions during a gamma ray burst. Our observations could potentially provide new constraints on the fireball model for gamma ray burst early emissions. Furthermore, observations of time-lags between optical and gamma ray photons provides an exciting opportunity to constrain quantum gravity theories.

Original languageEnglish
Title of host publicationDECIPHERING THE ANCIENT UNIVERSE WITH GAMMA-RAY BURSTS
EditorsN Kawai, S Nagataki
PublisherACOUSTICAL SOC AMER AMER INST PHYSICS
Pages318-+
Number of pages2
ISBN (Print)978-0-7354-0829-6
DOIs
Publication statusPublished - 2010
EventInternational Symposium Deciphering the Ancient Universe with Gamma-Ray Bursts - Kyoto, Japan
Duration: 19 Apr 201023 Apr 2010

Publication series

NameAIP Conference Proceedings
PublisherAMER INST PHYSICS
Volume1279
ISSN (Print)0094-243X

Conference

ConferenceInternational Symposium Deciphering the Ancient Universe with Gamma-Ray Bursts
CountryJapan
CityKyoto
Period19/04/1023/04/10

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