Monday, April 19, 2021 at 12:40

https://cuboulder.zoom.us/j/96981439846

Sasha Philippov, Center for Computational Astrophysics

"Extreme plasma astrophysics of black holes and neutron stars"

Abstract:

Neutron stars and black holes are powerful sources of broad-band non-thermal electromagnetic emission, including coherent radio and high-energy radiation. The collective behavior of plasmas that produce these emission signatures is still poorly understood. In order to allow modeling emission signatures from first principles, I construct radiative kinetic plasma simulations of neutron star and black hole environments. In this talk I will describe applications of these methods to the understanding of multi- wavelength pulsar emission mechanism, including the long-standing problem of the generation of coherent radio waves. I will also highlight recent work on pair plasma discharges and flares near supermassive black holes and electromagnetic precursors to compact object mergers.

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