出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The measurement of polarization is a powerful tool to constrain physical processes in astrophysical sources. Here we present the results of the measurements of linear polarization obtained in the 200–800 keV energy band using IBIS as a Compton polarimeter. We will focus on the highly polarized GRB 041219A, and its time resolved analysis. For this GRB our results favor models where the prompt emission at these energies is produced by synchrotron radiation from a relativistic outow with a magnetic eld, which is coherent on an angular size comparable with the angular size of the emitting region. Finally, we present the measurements and upper limits obtained for other GRBs detected by INTEGRAL.
