3 papers
gr-qc2026
Relic of quadrupole deformation produced in a hot neutron star era
Yasufumi Kojima, Akira Dohi, Shota Kisaka +1
A newly born neutron star is expected to exhibit significant deviations from spherical symmetry, which decay with time. Determining how much deformation remains at present is cruci…
astro-ph.HE2025
Asymmetric emissions of neutrinos in the cooling of rotating proto-neutron stars
Laura Barrio, Kotaro Fujisawa, Ryuichiro Akaho +2
We evaluate global asymmetry in the luminosities of neutrinos emitted from rapidly-rotating proto-neutron stars (PNS's). We build axisymmetric models of PNS's in mechanical equilib…
quant-ph2024
Quantum algorithm for collisionless Boltzmann simulation of self-gravitating systems
Soichiro Yamazaki, Fumio Uchida, Kotaro Fujisawa +2
The collisionless Boltzmann equation (CBE) is a fundamental equation that governs the dynamics of a broad range of astrophysical systems from space plasma to star clusters and gala…