Séminaire Hautes Energies / |
| « The hydrodynamics and breakout of relativistic shock waves » |
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Tamar Faran |
| Relativistic shock waves may exist in various extreme astrophysical environments, such as gamma-ray bursts and the outflows of binary neutron star mergers. Detailed theoretical models for shock wave hydrodynamics and the radiation that accompanies shock passage are crucial for a correct interpretation of observations, which can help uncover the properties of the exploding progenitors. In this talk I will discuss our hydrodynamic solution for the interiors of an ultra-relativistic blast wave (Faran & Sari 2021). We obtain a self-similar solution that describes the fluid dynamics close to the shock wave, at ultra-relativistic velocities, and all the way to the Newtonian interiors of the explosion. I will then discuss our ongoing work on the breakout of a relativistic shock wave from a stellar edge, and highlight applications of this work to low luminosity gamma ray bursts and to the gamma-ray flare that followed GW170817. |
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mardi 19 octobre 2021 - 14:00 Salle du Conseil Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |