Open AccessCollective flavor conversion including the neutrino halo in core-collapse supernovae
Author(s) -
Masamichi Zaizen,
John F. Cherry,
Tomoya Takiwaki,
Shunsaku Horiuchi,
Kei Kotake,
Hideyuki Umeda,
Takashi Yoshida
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1468/1/012137
Subject(s) - neutrino , physics , supernova , neutrino oscillation , astrophysics , type ii supernova , halo , front (military) , measurements of neutrino speed , astronomy , particle physics , solar neutrino , galaxy , meteorology
We investigate collective neutrino oscillation (CNO) including neutrino halo effects in an iron core-collapse supernova model. We find that CNO suddenly occurs beyond the propagating shock front evolved from a 9.6 M ⊙ star. Also, we find that neutrinos inwardly scattered by background matter can be ignored outside the shock front where CNO can occur, compared with outward-going neutrinos. Neutrinos get free from matter suppression and scattering with background matter beyond the shock front. Neutrino halo with wider intersection angles produces additional flavor transformation and sharpens the spectral splits.