Gamma Ray Bursts, from Engine to Afterglow

I will be discussing a handful of interesting problems related to gamma ray bursts. This includes the connection between long-duration gamma ray bursts and supernovae, the affect of Rayleigh-Taylor instability on GRB afterglows, the dynamics and spreading of relativistic jets, and a possible explanation for early plateaus in GRB afterglows. Additionally, I will discuss the interaction between a short-duration GRB jet and the dynamical ejecta responsible for kilonova emission, relevant to the recent discovery of a merging neutron star binary by LIGO. All of the calculations presented here were made possible by the use of a unique numerical technique which uses a moving mesh to evolve highly relativistic fluids over tremendous dynamical ranges.

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