High Energy Astrophysics and Cosmology in the era of all-sky surveys

Session

Spectral formation near compact objects

18 Jun 2026, 15:15

20. X- and gamma-ray radiation from the high-temperature plasma and spectra of accreting black holes

Sergei Grebenev (Space Research Institute)

18/06/2026, 15:15

We present our numerical computations of broadband radiation spectra formed in a layer of high-temperature ($kT_{e}\sim 50$ keV) semitransparent plasma (with a Thomson optical depth of $\tau_{T}\sim 1-3$) with an electron number density of $N_{e}\sim 10^{17}-10^{19}\ \mbox{cm}^{-3}$, characteristic of the accretion disk regions surrounding a black hole in X-ray binaries. The computations take...

67. Frontiers of Extreme Plasma Astrophysics

Hayk Hakobyan (Flatiron Institute)

18/06/2026, 15:40

Relativistic plasma astrophysics has undergone rapid development in recent years, driven by increasingly sophisticated observations and large-scale, high-fidelity numerical simulations. These advances have shed new light on a range of phenomena, including the broadband emission mechanisms of neutron star magnetospheres and the accretion flows and relativistic jets in both stellar-mass and...