Dirac-Neutrino Magnetic Moment and the Dynamics of a Supernova Explosion

Abstract

The double conversion of the neutrino helicity ${\nu }_L\to {\nu }_R\to {\nu }_L$ has been analyzed for supernova conditions, where the first stage is due to the interaction of the neutrino magnetic moment with plasma electrons and protons in the supernova core, and the second stage, due to the resonance spin flip of the neutrino in the magnetic field of the supernova envelope. It is shown that, in the presence of the neutrino magnetic moment in the range $10^{-13}{\mu }_{\mathrm{B}}<{\mu }_{\nu }<10^{-12}{\mu }_{\mathrm{B}}$ and a magnetic field of $\sim 10^{13}$ G between the neutrinosphere and the shock-stagnation region, an additional energy of about $10^{51}$ erg, which is sufficient for a supernova explosion, can be injected into this region during a typical shock-stagnation time.

10 pages, LaTeX, 4 EPS figures, accepted to JETP Letters

References in corpus (2)

• Theory of Core-Collapse Supernovae
• New bounds on the neutrino magnetic moment from the plasma induced neutrino chirality flip in a supernova

Cited by in corpus (5)

• Solar ${\bar{\nu }}_e$ flux: Revisiting bounds on neutrino magnetic moments and solar magnetic field
• Collective Oscillations of Majorana Neutrinos in Strong Magnetic Fields and Self-induced Flavor Equilibrium
• Spin flip of neutrinos with magnetic moment in core-collapse supernova
• Spin-Flavor Precession Phase Effects in Supernova
• Distinguishing Dirac and Majorana Neutrinos: Resonant Spin-Flavor Precession of GeV-Scale Astrophysical Transients