Date | Event Type | Speaker | |
02/03/2025 | CCPP Brown Bag | Jeremy Tinker [ + ] | |
02/04/2025 | Astro Seminar | Lizhong Zhang [ -- ] | |
Title: Understanding the dynamics of accretion onto neutron stars and black holes in relativistic radiation MHD simulations Abstract: Radiation and magnetic fields play essential roles in understanding accretion physics around neutron stars and black holes, particularly in near- and super-Eddington regimes. For black hole accretion in the near-Eddington regime, the disk structure depends on the initial magnetic field topology, allowing for the formation of thin disks with magnetic coronae or magnetically elevated disks. In the super-Eddington regime, the radiation-supported disk undergoes thermal expansion but is constrained by the magnetic tension of helical fields along the jet sheath, which shapes a conical funnel in the outflow region. For accretion onto a strongly magnetized neutron star, the magnetic field disrupts the disk structure, channeling accretion flows along field lines toward the magnetic poles. At sufficiently high accretion rates, radiation pressure supports this magnetically confined flow, forming a column structure near the poles. To model these processes, we solve (general) relativistic MHD equations coupled with angle-dependent radiation transfer, allowing us to capture the dynamics driven by radiation and magnetic fields in extreme environments. Our simulation results align with several observational findings and provide predictive diagnostics for future observations. (2:00 PM - 3:15 PM, 726 Broadway, 940, CCPP Seminar) | |||
02/04/2025 | Cosmic Happy Hour | Zubair Bhatti [ + ] | |
02/05/2025 | HEP Seminar | Yuri Gershtein [ + ] | |
02/06/2025 | Pullen Group Meeting | Pullen [ + ] | |
02/06/2025 | Physics Dept Colloquium | Alberto Nicolis [ + ] | |
02/07/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
02/10/2025 | CCPP Brown Bag | Emily Davis + Ken Van Tilburg [ + ] | |
02/11/2025 | Astro Seminar | Katie Breivik [ + ] | |
02/11/2025 | GR Office Hours | Mathew Calkins [ + ] | |
02/12/2025 | HEP Seminar | Richard Nally [ + ] | |
02/12/2025 | GR Office Hours | Mathew Calkins [ + ] | |
02/13/2025 | Pullen Group Meeting | Pullen [ + ] | |
02/13/2025 | Physics Dept Colloquium | Andrew Mills [ + ] | |
02/14/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
02/17/2025 | Holiday | [ + ] | |
02/18/2025 | Astro Seminar | Ruby Byrne [ + ] | |
02/19/2025 | HEP Seminar | Netta Engelhardt [ + ] | |
02/20/2025 | Astro Seminar | Drummond Fielding [ + ] | |
02/20/2025 | Pullen Group Meeting | Pullen [ + ] | |
02/20/2025 | Physics Dept Colloquium | Michael Shelley [ + ] | |
02/21/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
02/25/2025 | Astro Seminar | Alexandru Lupsasca [ + ] | |
02/26/2025 | HEP Seminar | Sanjay Reddy [ + ] | |
02/27/2025 | Pullen Group Meeting | Pullen [ + ] | |
02/27/2025 | Physics Dept Colloquium | Karri Dipetrillo [ + ] | |
02/28/2025 | Informal HEP Talk | Jordan Cotler [ + ] | |
02/28/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
03/04/2025 | Astro Seminar | JJ Zanazzi [ + ] | |
03/05/2025 | HEP Seminar | Giorgio Gratta [ + ] | |
03/06/2025 | Astro Seminar | Janosz Dewberry [ + ] | |
03/06/2025 | Pullen Group Meeting | Pullen [ + ] | |
03/06/2025 | Physics Dept Colloquium | Giorgi Gratta [ + ] | |
03/07/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
03/12/2025 | HEP Seminar | Junwu Huang [ + ] | |
03/13/2025 | Pullen Group Meeting | Pullen [ + ] | |
03/13/2025 | Physics Dept Colloquium | Cora Dvorkin [ + ] | |
03/14/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
03/19/2025 | HEP Seminar | Daniel Harlow [ + ] | |
03/20/2025 | Pullen Group Meeting | Pullen [ + ] | |
03/21/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
03/24/2025 | Holiday | [ + ] | |
03/25/2025 | Holiday | [ + ] | |
03/26/2025 | Holiday | [ + ] | |
03/27/2025 | Holiday | [ + ] | |
03/27/2025 | Pullen Group Meeting | Pullen [ + ] | |
03/28/2025 | Holiday | [ + ] | |
03/28/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
04/02/2025 | HEP Seminar | Csaba Csaki [ + ] | |
04/03/2025 | Pullen Group Meeting | Pullen [ + ] | |
04/04/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
04/09/2025 | HEP Seminar | Lorenzo Ricci [ + ] | |
04/10/2025 | Pullen Group Meeting | Pullen [ + ] | |
04/10/2025 | Physics Dept Colloquium | Jesse Thaler [ + ] | |
04/11/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
04/16/2025 | HEP Seminar | Michael Baker [ + ] | |
04/17/2025 | Pullen Group Meeting | Pullen [ + ] | |
04/18/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
04/23/2025 | HEP Seminar | Giovanni Villadoro [ + ] | |
04/24/2025 | Pullen Group Meeting | Pullen [ + ] | |
04/25/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
04/30/2025 | HEP Seminar | Dan Green [ + ] | |
05/01/2025 | Pullen Group Meeting | Pullen [ + ] | |
05/02/2025 | Hep-Th Discussions Sessio | Calkins [ + ] | |
05/09/2025 | Hep-Th Discussions Sessio | Calkins [ + ] |