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arXiv · 2405.11555

Strong magnetic field inside degenerate relativistic plasma and the impacts on the neutrino transport in Core-Collapse Supernovae

Yudong Luo·Shuai Zha·Toshitaka Kajino
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Abstract

We investigate the impacts of strong magnetic fields on neutrino transport in core-collapse supernovae (CCSNe) using the leakage scheme. Magnetic field quantizes the momentum of electrons and positrons, resulting in the modification of weak-interaction cross sections and the chemical potentials of electrons and positrons. We derive formula for neutrino leakage scheme including these two impacts and perform 1D CCSN simulations with \texttt{GR1D}. Magnetic field strengths from $10^{16}$\,G to $10^{17}$\,G were applied to postbounce phase. The results show that the neutrino opacities are enhanced due to the amplified interaction rates, with stronger effects on anti-neutrinos. This leads to larger neutrinosphere radii, longer neutrino trapping timescales, reduced peak luminosities, and delayed peak energies.

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Yudong Luo, Shuai Zha, Toshitaka Kajino. 2026-09-15. Strong magnetic field inside degenerate relativistic plasma and the impacts on the neutrino transport in Core-Collapse Supernovae. https://doi.org/10.1088/1674-1137%2Fae6b21

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