INTEGRAL Observations of the Nearby, Under-Luminous Gamma-Ray Burst GRB 031203

Details INTEGRAL Observations of the Nearby, Under-Luminous Gamma-Ray Burst GRB 031203 INTEGRAL Observations of the Nearby, Under-Luminous Gamma-Ray Burst GRB 031203

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..836..185s&link_type=abstract

GAMMA-RAY BURSTS IN THE SWIFT ERA: Sixteenth Maryland Astrophysics Conference. AIP Conference Proceedings, Volume 836, pp. 185-

Astronomy and Astrophysics

Astrophysics

2

Gamma-Ray Sources, Gamma-Ray Bursts, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

GRB 031203 was discovered by the INTEGRAL burst analysis system in near real time. It was about 10° off axis, thus well within the partially coded IBIS FoV and within the SPI fully coded FoV. This led to prompt follow up observations, reported on elsewhere, which resulted in red shift and luminosity information and estimates of the prompt soft X-ray intensity. Here we have revisited the INTEGRAL observations, notably including an analysis of the SPI germanium spectrograph data, which allows improved characterization of the spectral energy distribution to energies in excess of 200 keV. We explore the possibility of imposing new constraints on Epeak and on the hard-soft temporal lag determination.

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