Gyromagnetic Angular Momentum Interconversion in Neutron Stars
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915190590668800 |
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| author | Funaki, Hiroshi Sekino, Yuta Tajima, Hiroyuki Kisaka, Shota Yasutake, Nobutoshi Matsuo, Mamoru |
| author_facet | Funaki, Hiroshi Sekino, Yuta Tajima, Hiroyuki Kisaka, Shota Yasutake, Nobutoshi Matsuo, Mamoru |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_06068 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Gyromagnetic Angular Momentum Interconversion in Neutron Stars Funaki, Hiroshi Sekino, Yuta Tajima, Hiroyuki Kisaka, Shota Yasutake, Nobutoshi Matsuo, Mamoru High Energy Astrophysical Phenomena 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. |
| title | Gyromagnetic Angular Momentum Interconversion in Neutron Stars |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2503.06068 |