dr. Lara Nava
INAF Research Centre: Osservatorio Astronomico di Brera, Osservatorio Astronomico di Trieste
High and very-high energy emission from Gamma-Ray Bursts
utorak 29.05.2018. u 14h (F25)
Sažetak:
The physical origin of the temporally extended (>100 seconds) high-energy emission
(0.1-100 GeV) detected from Gamma-Ray Bursts (GRB) by the Fermi/LAT instrument has not been completely understood. The temporal and spectral properties of this long lasting emission are providing increasing evidence in favour of an external shock scenario, where the radiation is produced by electrons accelerated at the relativistic shock developed in interactions between the jet and the external medium. In this talk, I will give an overview of the state-of-the-art of GRB observations at GeV and TeV energies and discuss the potential of such observations in improving our still poor understanding of processes producing radiation in relativistic jets. Prospects for GRB detections with the upcoming CTA observatory will also be discussed, with particular emphasis on their fundamental role in revealing the nature of mechanisms powering GRB radiation.
Srdačno,
D. Radić i M. Makek