28 August 2022 to 1 September 2022
Politecnico di Milano - Polo territoriale di Lecco
Europe/Rome timezone

Time-resolved and Time-integrated Spectro-polarimetry Predictions of Gamma Ray Bursts

1 Sept 2022, 17:55
15m
Politecnico di Milano - Polo territoriale di Lecco

Politecnico di Milano - Polo territoriale di Lecco

Politecnico di Milano - Polo territoriale di Lecco Via Previati 1/c – 23900 Lecco, Italy

Speaker

Tyler Parsotan (UMBC/GSFC/CRESST II)

Description

A major question surrounding the study of Gamma Ray Bursts (GRBs) is the origin of the high energy prompt emission detected in the first few tens of seconds of the event. This question can be answered with time-resolved and time-integrated polarimetry observations across the electromagnetic spectrum. Recently, we used the MCRaT radiative transfer code to make robust optical to gamma-ray spectropolarimetry predictions for GRB prompt emission. The MCRaT code follows photons as they scatter in a hydrodynamically simulated GRB jet, taking cyclo-synchrotron emission and absorption processes and the full Klein-Nishina cross section into account. Using these simulations we present our constructed mock observations and associated correlations which can then be compared against future observations. We also show how our simulations allow us to infer GRB jet properties from future detected spectropolarimetric measurements, something that was not possible before. This study shows the importance and the utility of conducting global radiative transfer simulations of realistic GRB jet structures.

Primary author

Tyler Parsotan (UMBC/GSFC/CRESST II)

Presentation materials

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