Events List

DateEvent TypeSpeaker
10/01/2024Special SeminarDavid Hogg et. al [ + ]
10/01/2024No Astro Seminar [ + ]
10/02/2024ArXiv Discussion [ + ]
10/02/2024HEP SeminarHerman Verlinde [ + ]
10/03/2024Astro Research GroupHogg/Blanton [ + ]
10/03/2024Pullen Group Meeting [ + ]
10/03/2024Physics Dept ColloquiumSubir Sachdev [ + ]
10/04/2024Informal Astro TalkClaire Lamman [ + ]
10/04/2024HEP Discussion SessionsQ. Weller and M. Calkins [ + ]
10/07/2024CCPP Brown BagGlennys Farrar [ + ]
10/07/2024Astro Journal Club [ + ]
10/08/2024Special SeminarDavid Hogg et. al [ + ]
10/08/2024Astro SeminarFabio Pacucci [ + ]
10/09/2024ArXiv Discussion [ + ]
10/09/2024HEP SeminarAditya Parikh [ + ]
10/10/2024Astro Research GroupHogg/Blanton [ + ]
10/10/2024Physics Dept ColloquiumKurt Kremer [ + ]
10/11/2024HEP Discussion SessionsQ. Weller and M. Calkins [ + ]
10/14/2024Holiday [ + ]
10/15/2024Astro SeminarAlisa Galishnikova [ -- ]

Title: Plasma effects in black hole accretion
Abstract: The emission from accretion flows around the supermassive black holes M87* and Sgr A* originates from a relativistic plasma composed of ions, electrons, and possibly positrons. The characteristics of this extremely energetic plasma on microscopic scales fundamentally shape the system's large-scale dynamics. In this talk, I will describe the first-principles models of relativistic plasmas around black holes, necessary for interpreting and predicting the results of observations across the electromagnetic spectrum. Microscopic plasma effects not only affect the overall state of accretion but also alter the way we observe these systems by changing the distribution function of synchrotron-emitting electrons. Hot accretion flows, which are believed to operate around low-luminosity galactic nuclei, are often associated with strong outflows, winds, and jets. Nevertheless, the closest low-luminosity supermassive black hole, Sgr A*, located in the center of our galaxy, appears to lack a powerful jet. A simplified model of spherical accretion demonstrates why such systems might be unable to produce strong jets. (2:00 PM - 3:00 PM, 726 Broadway, 940, CCPP Seminar)
10/16/2024ArXiv Discussion [ + ]
10/16/2024HEP SeminarShirley Li [ + ]
10/17/2024Astro Research GroupHogg/Blanton [ + ]
10/17/2024Pullen Group Meeting [ + ]
10/17/2024Physics Dept ColloquiumKenneth Burch [ + ]
10/18/2024Informal HEP TalkAlessandro Sfondrini [ + ]
10/18/2024HEP Discussion SessionsQ. Weller and M. Calkins [ + ]
10/21/2024CCPP Brown BagWenzer Qin [ + ]
10/21/2024Astro Journal Club [ + ]
10/22/2024Informal Astro TalkTom Wagg [ + ]
10/23/2024ArXiv Discussion [ + ]
10/23/2024HEP SeminarAkaxia Cruz [ + ]
10/24/2024Astro Research GroupHogg/Blanton [ + ]
10/24/2024Pullen Group Meeting [ + ]
10/25/2024HEP Discussion SessionsQ. Weller and M. Calkins [ + ]
10/28/2024CCPP Brown BagDavid Dunsky [ + ]
10/28/2024Astro Journal Club [ + ]
10/29/2024Special SeminarDavid Hogg et. al [ + ]
10/30/2024ArXiv Discussion [ + ]
10/30/2024HEP SeminarZohar Komargodski [ + ]
10/30/2024Physics Dept ColloquiumJuan de Pablo [ + ]
10/31/2024Astro Research GroupHogg/Blanton [ + ]
10/31/2024Pullen Group Meeting [ + ]