Speaker
Annika Rudolph
(DESY)
Description
Due to the large amounts of energy they release, the luminous
transients called Gamma-Ray Bursts (GRBs) are of great interest for high
energy astroparticle physics. In the fireball internal shock scenario,
the prompt high energy emission is generated in collisions between
regions of the jet with different Lorentz factors. However, the
classical internal shock model faces several difficulties like low
overall energy dissipation efficiencies, which could be solved by
imposing different assumptions on the collision process. The feasibility
of such model modifications can be studied with hydrodynamic
simulations. Focusing on the so-called ultraefficient shock scenario, we
will discuss the results of these studies and their implications for GRB
modeling. Implementing different collision models in multi-collision GRB
simulations, we review their impact on the GRB evolution and on the
production of multiple astrophysical messengers.
Primary author
Annika Rudolph
(DESY)
