21–25 Jul 2025
University of Warsaw, Faculty of Physics
Europe/Warsaw timezone

Numerical simulations of jet launching and breakout from collapsars

24 Jul 2025, 15:00
20m
Room 0.06 (University of Warsaw, Faculty of Physics)

Room 0.06

University of Warsaw, Faculty of Physics

ul. Pasteura 5 02-093 Warszawa Poland
Presentation Electromagnetic

Speaker

Gerardo Urrutia (Center for Theoretical Physics, Polish Academy of Sciences)

Description

GRBs from collapsars have been studied by imposing jets at intermediate scales beyond the iron core region while exploring a wide range of parameters, such as luminosity and central engine duration. However, these conditions should be validated by studying jets launched directly from the central engine to show a global picture of the jet propagation inside and outside of the progenitor star. In this talk, I will present GRMHD simulations of GRB jets launched from a black hole and followed through to breakout from the collapsing star. From our simulations, I will discuss the implications of the inner progenitor structure, rotation, and magnetization on the properties of the jet emission (launching, duration, structure, and the variability). In addition, I will explain how future gravitational wave detections from highly relativistic jet's material could constrain central engine properties, such as energy and lifetime.

Primary author

Gerardo Urrutia (Center for Theoretical Physics, Polish Academy of Sciences)

Presentation materials

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