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Title: On the occurrence of fast neutrino flavor conversions in multidimensional supernova models

Abstract

The dense neutrino medium in a core-collapse supernova or a neutron-star merger event can experience fast flavor conversions on time/distance scales that are much smaller than those of vacuum oscillations. It is believed that fast neutrino flavor transformation occurs in the region where the angular distributions of νe and v¯e cross each other. We present the first study of this crossing phenomenon and the fast neutrino flavor conversions in multidimensional (multi-D) supernova models. We examine the neutrino distributions obtained by solving the Boltzmann transport equation for several fixed profiles which are representative snapshots taken from separate 2D and 3D supernova simulations with an 11.2 M progenitor model. Our research shows that the spherically asymmetric patterns of the νe and v¯e fluxes in multi-D models can assist the appearance of the crossing between the νe and v¯e angular distributions. In the models that we have studied, there exist unstable neutrino oscillation modes in and beyond the neutrino decoupling region which have amplitude growth rates as large as an e-fold per nanosecond. Here, this finding can have important consequences for the explosion mechanism, nucleosynthesis, and neutrino signals of core-collapse supernovae.

Authors:
 [1];  [2];  [3];  [4];  [5]
  1. Univ. Denis Diderot, Paris Cedex (France); Univ. of New Mexico, Albuquerque, NM (United States)
  2. Univ. of New Mexico, Albuquerque, NM (United States)
  3. Numazu College of Technology, Shizuoka (Japan)
  4. National Astronomical Observatory of Japan, Tokyo (Japan)
  5. Univ. Denis Diderot, Paris Cedex (France)
Publication Date:
Research Org.:
Univ. of New Mexico, Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1611017
Alternate Identifier(s):
OSTI ID: 1547968
Grant/Contract Number:  
SC0008142; SC0017803
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D.
Additional Journal Information:
Journal Volume: 100; Journal Issue: 4; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics; Novae & supernovae; Particle astrophysics

Citation Formats

Abbar, Sajad, Duan, Huaiyu, Sumiyoshi, Kohsuke, Takiwaki, Tomoya, and Volpe, Maria Cristina. On the occurrence of fast neutrino flavor conversions in multidimensional supernova models. United States: N. p., 2019. Web. doi:10.1103/physrevd.100.043004.
Abbar, Sajad, Duan, Huaiyu, Sumiyoshi, Kohsuke, Takiwaki, Tomoya, & Volpe, Maria Cristina. On the occurrence of fast neutrino flavor conversions in multidimensional supernova models. United States. https://doi.org/10.1103/physrevd.100.043004
Abbar, Sajad, Duan, Huaiyu, Sumiyoshi, Kohsuke, Takiwaki, Tomoya, and Volpe, Maria Cristina. Wed . "On the occurrence of fast neutrino flavor conversions in multidimensional supernova models". United States. https://doi.org/10.1103/physrevd.100.043004. https://www.osti.gov/servlets/purl/1611017.
@article{osti_1611017,
title = {On the occurrence of fast neutrino flavor conversions in multidimensional supernova models},
author = {Abbar, Sajad and Duan, Huaiyu and Sumiyoshi, Kohsuke and Takiwaki, Tomoya and Volpe, Maria Cristina},
abstractNote = {The dense neutrino medium in a core-collapse supernova or a neutron-star merger event can experience fast flavor conversions on time/distance scales that are much smaller than those of vacuum oscillations. It is believed that fast neutrino flavor transformation occurs in the region where the angular distributions of νe and v¯e cross each other. We present the first study of this crossing phenomenon and the fast neutrino flavor conversions in multidimensional (multi-D) supernova models. We examine the neutrino distributions obtained by solving the Boltzmann transport equation for several fixed profiles which are representative snapshots taken from separate 2D and 3D supernova simulations with an 11.2 M⊙ progenitor model. Our research shows that the spherically asymmetric patterns of the νe and v¯e fluxes in multi-D models can assist the appearance of the crossing between the νe and v¯e angular distributions. In the models that we have studied, there exist unstable neutrino oscillation modes in and beyond the neutrino decoupling region which have amplitude growth rates as large as an e-fold per nanosecond. Here, this finding can have important consequences for the explosion mechanism, nucleosynthesis, and neutrino signals of core-collapse supernovae.},
doi = {10.1103/physrevd.100.043004},
journal = {Physical Review. D.},
number = 4,
volume = 100,
place = {United States},
year = {Wed Aug 07 00:00:00 EDT 2019},
month = {Wed Aug 07 00:00:00 EDT 2019}
}

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text, January 2007


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text, January 2011


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text, January 2012


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text, January 2013


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text, January 2013


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text, January 2015


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text, January 2015


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text, January 2016


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text, January 2017


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Works referencing / citing this record:

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