Jul 5 – 10, 2021
Europe/Rome timezone

Understanding prompt emission: where do we stand ?

Jul 5, 2021, 4:30 PM
Talk in the parallel session Photospheric Emission in GRBs Photospheric Emission in GRBs


Asaf Pe'er (Bar Ilan University)


In recent years, there is a renewed debate about the origin of the observed prompt emission signal. Some authors found that synchrotron emission can dominate the spectra of several long bursts, and a recent analysis show that it may be possible to overcome the famous 'line of death' argument by a direct fitting procedure. On the other hand, several recent works showed that non-dissipative photosphere is preferred as the dominant emission model in at least 1/4 of long and 1/3 of short GRB population. In this talk I will critically review the arguments given as well as their physical consequences. I will then present some recent results that show a connection between the prompt spectra and the early afterglow emission, thereby argue for an independent method of discriminating the physical conditions that result in the different dominant radiative processes.

Primary author

Asaf Pe'er (Bar Ilan University)

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