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 | Physics Dept Colloquium | Alberto Nicolis [ + ] | |
02/07/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
02/10/2025 | CCPP Brown Bag | Emily Davis + Ken Van Tilburg [ + ] | |
02/11/2025 | Astro Seminar | Katie Breivik [ + ] | |
02/12/2025 | HEP Seminar | Richard Nally [ + ] | |
02/13/2025 | Physics Dept Colloquium | Andrew Mills [ + ] | |
02/14/2025 | Hep-Th Discussion Session | 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 | Physics Dept Colloquium | Michael Shelley [ + ] | |
02/21/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
02/24/2025 | CCPP Brown Bag | Cara Giovanetti [ + ] | |
02/25/2025 | Astro Seminar | Alexandru Lupsasca [ + ] | |
02/26/2025 | HEP Seminar | Sanjay Reddy [ + ] | |
02/27/2025 | Physics Dept Colloquium | Karri Dipetrillo [ + ] | |
02/28/2025 | Informal HEP Talk | Jordan Cotler [ + ] | |
02/28/2025 | Hep-Th Discussion Session | 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 | Physics Dept Colloquium | Giorgi Gratta [ + ] | |
03/07/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
03/10/2025 | CCPP Brown Bag | Jesse Liu [ + ] | |
03/12/2025 | HEP Seminar | Junwu Huang [ + ] | |
03/13/2025 | Physics Dept Colloquium | Cora Dvorkin [ + ] | |
03/14/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
03/19/2025 | HEP Seminar | Daniel Harlow [ + ] | |
03/21/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
03/24/2025 | Holiday | [ + ] | |
03/25/2025 | Holiday | [ + ] | |
03/26/2025 | Holiday | [ + ] | |
03/27/2025 | Holiday | [ + ] | |
03/28/2025 | Holiday | [ + ] | |
03/28/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/02/2025 | HEP Seminar | Csaba Csaki [ + ] | |
04/04/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/09/2025 | HEP Seminar | Lorenzo Ricci [ + ] | |
04/10/2025 | Physics Dept Colloquium | Jesse Thaler [ + ] | |
04/11/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/16/2025 | HEP Seminar | Michael Baker [ + ] | |
04/18/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/21/2025 | CCPP Brown Bag | Marius Kongsore [ + ] | |
04/23/2025 | HEP Seminar | Giovanni Villadoro [ + ] | |
04/25/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
04/28/2025 | CCPP Brown Bag | Marcus DuPont [ + ] | |
04/30/2025 | HEP Seminar | Dan Green [ + ] | |
05/02/2025 | Hep-Th Discussion Session | Calkins [ + ] | |
05/09/2025 | Hep-Th Discussion Session | Calkins [ + ] |