Date | Event Type | Speaker | |
04/01/2025 | Astro Seminar | Bart Ripperda [ -- ] | |
Title: Are We There Yet? First-principles Modeling of Multimessenger sSignals in the Plasma Universe Abstract: Astrophysical black holes are surrounded by accretion disks, jets, and coronae consisting of magnetized relativistic plasma. They produce observable multi wavelength and multi messenger signals from near the event horizon and it is currently unclear how this emission is exactly produced. The electromagnetic radiation typically has a non-thermal component, implying a power-law distribution of emitting relativistic electrons. Magnetic reconnection and plasma turbulence are viable mechanisms to tap the large reservoir of magnetic energy in these systems and accelerate electrons to extreme energies. The accelerated electrons can then emit high-energy photons that themselves may strongly interact with the plasma, rendering a highly nonlinear system. In some cases the electromagnetic emission is accompanied by a multi messenger signal in the form of neutrinos, cosmic rays, or gravitational waves. Modeling the emitting systems necessitates a combination of magnetohydrodynamic models to capture the global dynamics of the formation of dissipation regions, and a kinetic treatment of plasma processes that are responsible for particle acceleration, quantum electrodynamics effects like pair creation and annihilation, and radiation. I will present novel studies of accreting black holes and how they radiate in regions close to black hole event horizon, using both first-principles general relativistic kinetic particle-in-cell simulations and global large-scale three-dimensional magnetohydrodynamics models. With a combination of models, I determine where and how dissipation of magnetic energy occurs, what kind of emission signatures are typically produced, and what they can teach us about the nature of black holes. (11:00 AM - 12:15 PM, 726 Broadway, 940, CCPP Seminar) | |||
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 [ + ] | |
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 [ + ] |