Prompt Emission and Early Optical Afterglow of Very-high-energy Detected GRB 201015A and GRB 201216C: Onset of the External Forward Shock

Martin Jelínek, Jan Štrobl and René Hudec from ASU and student Alžběta Maleňáková from the Astronomical Institute of Charles University were part of a large international team that was involved in a very detailed study of two interesting gamma ray bursts. In the work, they deal with descriptive properties on the one hand, but mainly the authors tried to determine what caused them and what mechanisms drove their energy jets.

Gamma-Ray Bursts (GRBs) are sudden intense explosions of electromagnetic radiation with significant effects in the high-energy spectrum in the kiloelectron and megaelectron region. In total, energy of the order of 1044 to 1047 joules is released in shock during these explosions. GRBs usually emit radiation in two consecutive phases. First, there is an instantaneous emission, which manifests itself mainly in photons with energies around 1 megaelectronvolt, which corresponds to the region of hard X-rays and soft gamma rays. Then follows the so-called afterglow, which manifests itself in areas with lower energies, for example in the optical area.

More / Source: web ASU

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