| Saturday 24 May 2025 | |
| Events for day: Tuesday 27 May 2025 |
| 11:00 - 12:30 Weekly Seminar Slowly Rotating Accretion Flows Around Supermassive Black Holes in Elliptical Galaxies School ASTRONOMY It has been believed that supermassive black holes (SMBHs) in most nearby galaxies are powered by hot accretion flows. Compared to the well-known standard thin disks (cold accretion mode), hot accretion flows exhibit significantly higher temperatures and faster radial velocities, resulting in much lower radiative efficiency. This talk presents global solutions of slowly rotating hot accretion flows onto SMBHs located at the centers of elliptical galaxies. The inflowing gas begins subsonically and becomes supersonic as it approaches the black hole, forming a transonic accretion flow. The hydrodynamic equations governing the system are solved n ... 14:00 - 15:00 Weekly Seminar HEPCo Group Fracton and Non-Lorentzian Particle Duality School PHYSICS Date and time Tuesday, May 27th, 2025 (Khordad 6st, 1404), 2:00 pm (Tehran zone) Link https://www.skyroom.online/ch/schoolofphysics/highenergyseminar Abstract Fractons, characterized by restricted mobility and governed by higher-moment conservation laws, represent a novel phase of matter with profound connections to tensor gauge theories and emergent gravity. I will systematically explore the duality between fractons and non-Lorentzian particles—specifically, Carroll and Galilean particles—within electromagnetic (EM) fields. By constructing canonical ac ... |