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_papers/Cheong:2024cnb.md

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+---
+title: "Influence of neutrino-electron scattering and neutrino-pair annihilation on hypermassive neutron star"
+authors:
+  - "Cheong, Patrick Chi-Kit"
+  - "Foucart, Francois"
+  - "Ng, Harry Ho-Yin"
+  - "Offermans, Arthur"
+  - "Duez, Matthew D."
+  - "Muhammed, Nishad"
+  - "Chawhan, Pavan"
+jref:
+doi:
+date: 2024-10-27
+arxiv: "2410.20681"
+abstract: |
+  We investigate the influence of inelastic neutrino microphysics in
+  general-relativistic magnetohydrodynamics simulations of a
+  hypermassive neutron star. In particular, we include species/energy
+  groups coupled neutrino-matter interactions, such as inelastic
+  neutrino-electron scattering and electron-positron annihilation
+  kernels, into simulations up to 50 ms. Neutrino-electron inelastic
+  scattering is known to have effective neutrino-matter energy
+  exchange. We show that, with neutrino-electron inelastic scattering,
+  simulations predict 75% higher disc mass with slightly different
+  mass-averaged compositions, and 18% more ejected mass with similar
+  distributions. The enhancement of the mass of the disc and the
+  ejecta results in stronger baryon pollution, leading to less
+  favourable jet launching environments. Furthermore, neutrino
+  luminosities are about 50, 40, and 30% higher for electron neutrino,
+  electron anti-neutrino, and heavy-lepton neutrinos. In contrast, we
+  do not see any significant impacts due to electron-positron
+  annihilation.
+---