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Physical Properties of Gamma Ray Burst Afterglows from the BAT6 Sample

Semester: Summer 2023

Presentation description

Gamma ray bursts (GRBs) are extremely high-energy releases of light caused by the most violent stellar events in our galaxy-supernovae and high-mass binary mergers. A gamma ray burst consists of two phases-prompt emission and afterglow emission. During afterglow emission, which lasts from days to years, the cooling of an ejected jet of material causes a unique emission spectrum from radio waves through X-rays. The Standard Model for gamma ray burst afterglows establishes the relationship between the observed afterglow emission spectrum and the physical properties of gamma ray burst afterglows. This work is part of a larger collaboration which studies gamma ray burst events from the BAT6 sample and uses Standard Model to determine their physical properties. We seek to establish trends in the energy, time-evolution, electron index, magnetic energy, and density profiles of gamma ray bursts. This gives us greater insight into the high-energy hydrodynamic and relativistic phenomena that occur as a result of these extreme stellar events. We summarize the results from GRB events 050922C and 050401, both of which we believe are occurring in wind (high-density) environments.

Presenter Name: Jude Horsley

Presentation Type: Poster
Presentation Format: In Person
Presentation #78
College: Science
School / Department: Physics & Astronomy
Research Mentor: Tanmoy Laskar
Date | Time: Thursday, Aug 3rd | 10:30 AM