Oct 20 – 23, 2026
RIKEN
Asia/Tokyo timezone
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A Hybrid Treatment of Baryon Degeneracy in Neutrino Transport for Core-Collapse Supernovae

Oct 21, 2026, 6:00 PM
3h
Headquarters Building 2F (RIKEN)

Headquarters Building 2F

RIKEN

2-1, Hirosawa, Wako, Saitama 351-0198, Japan
Poster Presentation Poster Session

Speaker

Myung-Ki CHEOUN (Soongsil University)

Description

We present neutrino-transport calculations for core-collapse supernova explosions (CCSNe), treating both degenerate and non-degenerate baryonic matter. Because neutrino–nucleon interactions are strongly affected by baryon degeneracy through Pauli blocking, the high-density region near the neutrinosphere requires careful phase-space integrations for the participating nucleons.

To address this issue, we develop a hybrid model that includes nucleon-degeneracy effects in Urca processes and neutrino-pair production within the neutrino-transport equation. The resulting CCSN simulations yield the evolution of the proto-neutron-star radius and shock-wave radius, and demonstrate the impact of baryon degeneracy on neutrino propagation.

Category Theory

Authors

Dr Dukjae Jang (Soongsil University) Prof. Eunja Ha (Hanyang University) Hajime Togashi (RIKEN) Myung-Ki CHEOUN (Soongsil University) Mr Young-so Choi (Soongsil University)

Presentation materials

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