INTEGRAL measures a polarized signal from a Gamma-Ray Burst
Date: 05 May 2009
Depicts: IBIS lightcurve and polarigram of GRB 041219A
Copyright: D. Götz et al. 2009
On 19 December 2004, the INTEGRAL Burst Alert system discovered GRB 041219A. This is one of the brightest and longest Gamma-Ray Bursts (GRBs) ever detected. Thanks to its brightness IBIS could be used as a Compton polarimeter, by analyzing the events that interacted both in the upper detection layer, ISGRI, and the lower layer, PICsIT. This has allowed a team lead by Diego Götz (CEA Saclay) to measure a time variable polarization signal in the GRB.
Last Update: 1 September 2019