Dark matter sterile neutrinos in stellar collapse: alteration of energy/lepton number transport and a mechanism for supernova explosion enhancement

Abstract

We investigate matter-enhanced Mikheyev-Smirnov-Wolfenstein (MSW) active-sterile neutrino conversion in the ${\nu }_e\rightleftharpoons {\nu }_s$ channel in the collapse of the iron core of a pre-supernova star. For values of sterile neutrino rest mass $m_s$ and vacuum mixing angle $\theta$ (specifically, $0.5\mathrm{keV}<m_s<10\mathrm{keV}$ and ${\sin }^{2}2\theta >5\times {10}^{-12}$) which include those required for viable sterile neutrino dark matter, our one-zone in-fall phase collapse calculations show a significant reduction in core lepton fraction. This would result in a smaller homologous core and therefore a smaller initial shock energy, disfavoring successful shock re-heating and the prospects for an explosion. However, these calculations also suggest that the MSW resonance energy can exhibit a minimum located between the center and surface of the core. In turn, this suggests a post-core-bounce mechanism to enhance neutrino transport and neutrino luminosities at the core surface and thereby augment shock re-heating: (1) scattering-induced or coherent MSW ${\nu }_e\to {\nu }_s$ conversion occurs deep in the core, at the first MSW resonance, where ${\nu }_e$ energies are large ($\sim 150$ MeV); (2) the high energy ${\nu }_s$ stream outward at near light speed; (3) they deposit their energy when they encounter the second MSW resonance ${\nu }_s\to {\nu }_e$ just below the proto-neutron star surface.

13 pages, 9 figures

References in corpus (5)

• Opening a new window for warm dark matter
• Relic keV sterile neutrinos and reionization
• Direct X-ray Constraints on Sterile Neutrino Warm Dark Matter
• Constraints on Sterile Neutrino Dark Matter
• Improved search for ${\nu }_{\mu }\to {\nu }_e$ oscillation in a long-baseline accelerator experiment

Cited by in corpus (35)

• How to find neutral leptons of the nuMSM?
• Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
• A lower bound on the mass of Dark Matter particles
• Sterile neutrino dark matter as a consequence of nuMSM-induced lepton asymmetry
• Dark Matter Candidates: A Ten-Point Test
• Neutrinoless double beta decay versus other probes of heavy sterile neutrinos
• Constraints on decaying Dark Matter from XMM-Newton observations of M31
• Limits on the Radiative Decay of Sterile Neutrino Dark Matter from the Unresolved Cosmic and Soft X-ray Backgrounds
• Strong Upper Limits on Sterile Neutrino Warm Dark Matter
• Sterile Neutrino-Enhanced Supernova Explosions
• Search for the light dark matter with an X-ray spectrometer
• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• Supernova Constraints on Massive (Pseudo)Scalar Coupling to Neutrinos
• Sterile neutrinos as subdominant warm dark matter
• Searching for dark matter sterile neutrino in laboratory
• Simulating nonlinear neutrino flavor evolution
• Sterile neutrino oscillations in core-collapse supernovae
• Lifting the core-collapse supernova bounds on keV-mass sterile neutrinos
• Towards Probing the Diffuse Supernova Neutrino Background in All Flavors
• Delayed pulsar kicks from the emission of sterile neutrinos
• Comprehensive constraints on heavy sterile neutrinos from core-collapse supernovae
• Prospects for Finding Sterile Neutrino Dark Matter at KATRIN
• Evolution of Tau-Neutrino Lepton Number in Protoneutron Stars due to Active-Sterile Neutrino Mixing
• Production of a sterile species via active-sterile mixing: an exactly solvable model
• Exploiting stellar explosion induced by the QCD phase transition in large-scale neutrino detectors
• Non equilibrium dynamics of mixing, oscillations and equilibration: a model study
• Core-collapse Supernova Constraint on the Origin of Sterile Neutrino Dark Matter via Neutrino Self-interactions
• Probing self-interacting sterile neutrino dark matter with the diffuse supernova neutrino background
• Effects of an Intermediate Mass Sterile Neutrino Population on the Early Universe
• Neutrino Fluxes from a Core-Collapse Supernova in a Model with Three Sterile Neutrinos
• Supernova Bounds on keV-mass Sterile Neutrinos
• Enhanced Muonization by Active-Sterile Neutrino Mixing in Protoneutron Stars
• Gravitational-Wave Signatures of Nonstandard Neutrino Properties in Collapsing Stellar Cores
• The viability of the 3+1 neutrino model in the supernova neutrino process
• Production of a sterile species: quantum kinetics