| Today, Tuesday, September 15, 2026 |
| Stars and Compact Objects in AGN Disks: From Stellar Evolution to Transients | |
| Rosalba Perna, Stony Brook University | |
| Event Type: Astro Seminar | |
| Time: 2:00 PM - 3:15 PM | |
| Location: 726 Broadway, 940, CCPP Seminar | |
| Abstract: The disks of Active Galactic Nuclei (AGNs) have emerged as intriguing environments for the evolution of stars and the compact objects they leave behind. The extreme densities of these disks, combined with gravitational and hydrodynamic torques exerted by the gas, can drive evolutionary pathways for main-sequence stars and compact objects that differ substantially from those in typical galactic environments. Well-known transient phenomena, such as long and short gamma-ray bursts, may acquire distinctive properties when they occur within AGN disks, while new channels for transient and compact-object formation may also emerge. In particular, processes such as the accretion-induced collapse of neutron stars into black holes may occur frequently in these environments. I will discuss how the unique physical conditions of AGN disks can reshape stellar evolution and compact object demographics, and explore their implications for the transient and gravitational wave universe. | |
| Astrophysical Neutrinos! | |
| Anna Suliga | |
| Event Type: Cosmic Happy Hour | |
| Time: 8:00 PM - 9:30 PM | |
| Location: 197 E 3rd St (East Village) | |
| Abstract: Our first Cosmic Happy Hour talk for the new academic year will be given by postdoc Anna Suliga, who will present on astrophysical neutrinos! It will take place at Book Club Bar in the East Village (not the one in Bushwick). It's $15 for a ticket to attend, which includes $8 towards any drink at the bar. The details: Date: Tuesday, September 15 Time: Intro & Talk - 8-9pm; Social - 9-9:30pm Address: 197 E 3rd St (East Village) Cost: $15 (incl. $8 towards a drink) If you are a grad student or postdoc in CCPP or EPP and would be willing to meet with the attendees, please let me know and I will get you a free ticket. This is only for the first 5 people who respond, so please respond quickly! Those who volunteer will stay for at least 20 min post-talk and introduce themselves to 1-2 guests and see if they have any questions. This can be done solo or in pairs. Let me know if you have any questions. Also, if you would like to forward this to your friends, or if you would like to purchase a ticket, here's the link to the event page: https://www.eventbrite.com/e/cosmic-happy-hour-tickets-780741407567?aff=oddtdtcreator | |