Date | Event Type | Speaker | |
04/01/2025 | Astro Seminar | Bart Ripperda [ + ] | |
04/01/2025 | Informal Astro Talk | Raagini Patki [ + ] | |
04/02/2025 | HEP Journal Club | [ + ] | |
04/02/2025 | HEP Seminar | Csaba Csaki [ + ] | |
04/03/2025 | Physics Dept Colloquium | Alessandra Buonanno [ + ] | |
04/04/2025 | Special Seminar | Dalimil Mazac [ + ] | |
04/04/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/08/2025 | Astro Seminar | Magdalena Siwek [ -- ] | |
Title: Signatures of Circumbinary Disk Dynamics in Astrophysical Binary Populations Abstract: Pulsar Timing Arrays (PTAs) have found compelling evidence for the existence of a Gravitational Wave Background (GWB): a ‘hum’ of low-frequency gravitational waves that permeates the Universe, emitted by the loudest gravitational wave (GW) sources in the Universe: Massive Black Hole Binaries (MBHBs). In gas-rich galactic nuclei, MBHB evolution is expected to be accompanied by interaction with circumbinary accretion disks (CBDs). In this talk I will show that, i) accretion from CBDs increases the amplitude of the GWB, but that CBD-induced orbital expansion has a negligible effect, ii) the mass ratio evolution and `eccentricity attractor' derived from CBD simulations is expected to induce a strong signature in the MBHB population, and that iii) evidence for such a signature has already been found in stellar binaries. Finally, I will discuss how the accretion from CBDs may enable multi-messenger detection of these systems through electromagnetic follow-up, and present preliminary models of the diverse electromagnetic signatures emitted by MBHBs in CBDs. (2:00 PM - 3:00 PM, 726 Broadway, 940, CCPP Seminar) | |||
04/09/2025 | HEP Journal Club | [ + ] | |
04/09/2025 | HEP Seminar | Lorenzo Ricci [ + ] | |
04/09/2025 | Cosmic Happy Hour | Cammie Norton [ + ] | |
04/10/2025 | Physics Dept Colloquium | Jesse Thaler [ + ] | |
04/11/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/14/2025 | Special Seminar | Misha Shaposhnikov [ + ] | |
04/15/2025 | Astro Seminar | Julien Lavalle [ + ] | |
04/16/2025 | HEP Journal Club | [ + ] | |
04/16/2025 | HEP Seminar | Michael Baker [ + ] | |
04/18/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/21/2025 | CCPP Brown Bag | Marius Kongsore [ + ] | |
04/21/2025 | Informal HEP Talk | Nat Levine [ + ] | |
04/22/2025 | Astro Seminar | Gabriela Sato-Polito [ + ] | |
04/23/2025 | HEP Journal Club | [ + ] | |
04/23/2025 | HEP Seminar | Giovanni Villadoro [ + ] | |
04/25/2025 | Informal HEP Talk | Weiguang Cao [ + ] | |
04/25/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/28/2025 | CCPP Brown Bag | Marcus DuPont [ + ] | |
04/29/2025 | Astro Seminar | Risa Wechsler [ + ] | |
04/29/2025 | Oral Defense | Joan La Madrid [ + ] | |
04/30/2025 | Oral Defense | Calvin Chen [ + ] | |
04/30/2025 | HEP Seminar | Harikrishnan Ramani [ + ] | |
04/30/2025 | HEP Journal Club | [ + ] | |
05/01/2025 | Physics Dept Colloquium | Lyman Page [ + ] | |
05/02/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
05/06/2025 | Astro Seminar | Tetyana Pitik [ + ] | |
05/07/2025 | HEP Journal Club | [ + ] | |
05/07/2025 | HEP Seminar | Howie Haber [ + ] | |
05/07/2025 | HEP Seminar | Howie Haber [ + ] | |
05/09/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
05/14/2025 | HEP Journal Club | [ + ] | |
09/11/2025 | Physics Dept Colloquium | Wendy Freeman [ + ] |