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Title: Active–Sterile Neutrino Oscillations in Neutrino-driven Winds: Implications for Nucleosynthesis

Journal Article · · The Astrophysical Journal (Online)
ORCiD logo [1];  [2]; ORCiD logo [3]
  1. Univ. of Minnesota, Minneapolis, MN (United States)
  2. Academia Sinica, Taipei (Taiwan)
  3. Univ. of Minnesota, Minneapolis, MN (United States); Tsung-Dao Lee Inst., Shanghai (China)
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A protoneutron star produced in a core-collapse supernova (CCSN) drives a wind by its intense neutrino emission. We implement active–sterile neutrino oscillations in a steady-state model of this neutrino-driven wind to study their effects on the dynamics and nucleosynthesis of the wind in a self-consistent manner. Using vacuum mixing parameters indicated by some experiments for a sterile νs of ~1 eV in mass, we observe interesting features of oscillations due to various feedback. For the higher νs mass values, we find that oscillations can reduce the mass-loss rate and the wind velocity by a factor of ~1.6–2.7 and change the electron fraction critical to nucleosynthesis by a significant to large amount. In the most dramatic cases, oscillations shift nucleosynthesis from dominant production of 45Sc to that of 86Kr and 90Zr during the early epochs of the CCSN evolution.

Research Organization:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-87ER40328
OSTI ID:
1610094
Journal Information:
The Astrophysical Journal (Online), Vol. 880, Issue 2; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Figures / Tables (16)

Table 1(p. 4)table Table 1
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Table 2(p. 5)table Table 2
Table 3(p. 5)table Table 3
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