11–15 Sept 2023
Europe/Rome timezone

TeV Gamma-Ray Afterglow in Shallow Decay Phases of GRBs

12 Sept 2023, 17:15
15m
Room gamma

Room gamma

Gamma Ray Astronomy GRA: Gamma Ray Astronomy

Speaker

Katsuaki Asano (Institute for Cosmic Ray Research, The University of Tokyo)

Description

In gamma-ray bursts, X-ray afterglows frequently show a shallow decaying emission in their first few thousand seconds. Possible models for the shallow decay phase are continuous energy injection, late catch-up of lately launched ejecta, the evolution of microscopic parameters, thin wind profile of the circumstellar medium, and so on. Depending on the models, the TeV emission of the early afterglow will show different behaviors. We show model calculations of multi-wavelength lightcurves based on our time-dependent simulation code. The detection of early TeV afterglows will provide a clue to distinguishing the models of the shallow decay phase.

Primary author

Katsuaki Asano (Institute for Cosmic Ray Research, The University of Tokyo)

Presentation materials