Palestrante: Wlodek Kluzniak (Copernicus Astronomical Center, Polônia)
Titulo: The next picture of a black hole
Resumo: Many black holes can be observed because they accrete ambient matter which releases tremendous potential energy as it falls into the gravitational well. The celebrated picture of the black hole in the M87 galaxy corresponds to fairly tenuous matter falling onto this supermassive black hole. Many other black holes, particularly the ones
in a binary system with an ordinary stellar companion, are surrounded by very luminous, dense, disk-like accreting matter (a few dozen such X-ray sources are known in our Galaxy).
These accretion disks have been discussed in the literature for about half a century. I will report on the results of magnetohydrodynamic simulations in general relativity (GRMHD) of luminous accretion disks performed in our group with the inclusion of radiation. The observational appearance of such a disk will be presented.
Para visualizar o calendário completo ou para solicitar divulgação de eventos, acesse aqui.