Gyromagnetic Angular Momentum Interconversion in Neutron Stars
- Date
- August 28 (Thu) 10:00 - 12:00, 2025 (JST)
- Speaker
-
- Hiroshi Funaki (Specially Appointed Assistant Professor, Faculty of Science and Technology, Keio University)
- Language
- Japanese
- Host
- Yuta Sekino
[NOTE] This informal seminar mainly organized by ABBL will be held in Japanese and is a joint event for GWX-EOS Working Group and iTHEMS-ABBL Joint Astro Study Group.
Abstract:
We propose a novel mechanism for angular momentum (AM) exchange between the crust and core of a neutron star (NS) via the gyromagnetic effect. Using extended hydrodynamics, we model the star by incorporating macroscopic AM and microscopic AM originating from neutron orbital and spin AM. We reveal that macroscopic dynamics in the crust can inform microscopic AM in the core leading to neutron spin polarization, and offer alternative scenario of (anti-)glitches. This work highlights the overlooked multi-scale AM interconversions in NS physics, paving the way for gyromagnetic astrophysics.
Reference
- Hiroshi Funaki, Yuta Sekino, Hiroyuki Tajima, Shota Kisaka, Nobutoshi Yasutake, Mamoru Matsuo, Gyromagnetic Angular Momentum Interconversion in Neutron Stars, arXiv: 2503.06068
This is a closed event for scientists. Non-scientists are not allowed to attend. If you are not a member or related person and would like to attend, please contact us using the inquiry form. Please note that the event organizer or speaker must authorize your request to attend.
