[phys4phys] Group for Gravitation, Particles and Fields seminar, Friday, 6th of March, 2026

[prlina]

Dear colleagues,

You are cordially invited to the seminar of the Group for Gravitation, 
Particles and Fields, which will be held on Friday, 6th of March, 2026, 
at 11:00 at the Institute of Physics Belgrade, lecture hall 360.

The talk entitled:

Black holes: implications for dark matter searches and theories of 
gravity

will be given by Andrei Egorov (Institute of Physics Belgrade).

Abstract: My talk will contain two major parts. The first part will be 
dedicated to my new work about detection prospects for heavy DM 
particles (WIMPs) near supermassive black holes (SMBHs). SMBHs are 
expected to form density spikes of annihilating DM. Such spikes may be 
detectable in the gamma-ray band even in the case of the heaviest WIMPs, 
which are not observable otherwise. Only two closest SMBHs are shown to 
be relevant for WIMP searches: MW* and M31*. I estimated the sensitivity 
of upcoming Cherenkov Telescope Array to the potential WIMP signal from 
those targets. The second part of my talk will review semi-qualitatively 
the implications and possibilities of BH observations for testing 
theories of gravity (including quantum ones). Thus, I cover current and 
future observations of gravitational waves, SMBH shadows, isolated 
stellar BHs, MW nuclear star cluster and others. Finally, a summary of 
the current synergy between theory and observations will be given.

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Time: March 6, 2026 11:00 Belgrade

Institute of Physics Belgrade, lecture hall 360, 2nd floor

BigBlueButton platform link: 
https://gravityserver.ipb.ac.rs/b/mar-ae0-f4q-qww

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Best regards,
Igor Prlina