Stability analysis of collective neutrino oscillations in the supernova accretion phase with realistic energy and angle distributions
arXiv:1203.1484 · doi:10.1103/PhysRevD.85.113002
Abstract
We revisit our previous results on the matter suppression of self-induced neutrino flavor conversions during a supernova (SN) accretion phase, performing a linearized stability analysis of the neutrino equations of motion, in the presence of realistic SN density profiles. In our previous numerical study, we used a simplified model based on an isotropic neutrino emission with a single typical energy. Here, we take into account realistic neutrino energy and angle distributions. We find that multi-energy effects have a sub-leading impact in the flavor stability of the SN neutrino fluxes with respect to our previous single-energy results. Conversely, realistic forward-peaked neutrino angular distributions would enhance the matter suppression of the self-induced oscillations with respect to an isotropic neutrino emission. As a result, in our models for iron-core SNe, collective flavor conversions have a negligible impact on the characterization of the observable neutrino signal during the accretion phase. Instead, for a low-mass O-Ne-Mg core SN model, with lower matter density profile and less forward-peaked angular distributions, collective conversions are possible also at early times.
v2: 8 pages, 3 eps figures. Revised version. Minor changes. References updated. Matches the version published on PRD
References in corpus (17)
- Observation of electron-antineutrino disappearance at Daya Bay
- Observation of Reactor Electron Antineutrino Disappearance in the RENO Experiment
- Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
- Indication for the disappearance of reactor electron antineutrinos in the Double Chooz experiment
- Simulation of Coherent Non-Linear Neutrino Flavor Transformation in the Supernova Environment I: Correlated Neutrino Trajectories
- Collective neutrino flavor transitions in supernovae and the role of trajectory averaging
- Multiple Spectral Splits of Supernova Neutrinos
- The multi-angle instability in dense neutrino systems
- Role of dense matter in collective supernova neutrino transformations
- Comment on Phys. Rev. Lett. 108, 191802 (2012): "Observation of Reactor Electron Antineutrino Disappearance in the RENO Experiment"
- Adiabaticity and spectral splits in collective neutrino transformations
- Decoherence in supernova neutrino transformations suppressed by deleptonization
- Neutrino Mass Hierarchy and Stepwise Spectral Swapping of Supernova Neutrino Flavors
- Neutrino spectra evolution during proto-neutron star deleptonization
- Self-induced suppression of collective neutrino oscillations in a supernova
- Probing the neutrino mass hierarchy with the rise time of a supernova burst
- Analysis of matter suppression in collective neutrino oscillations during the supernova accretion phase
Cited by in corpus (35)
- Neutrino cloud instabilities just above the neutrino sphere of a supernova
- Self-sustained asymmetry of lepton-number emission: A new phenomenon during the supernova shock-accretion phase in three dimensions
- Neutrino emission characteristics and detection opportunities based on three-dimensional supernova simulations
- Self-induced neutrino flavor conversion without flavor mixing
- What can be learned from a future supernova neutrino detection?
- Axial symmetry breaking in self-induced flavor conversion of supernova neutrino fluxes
- Neutrino signature of supernova hydrodynamical instabilities in three dimensions
- Effects of neutrino oscillations on nucleosynthesis and neutrino signals for an 18 M supernova model
- Linear Analysis of Fast-Pairwise Collective Neutrino Oscillations in Core-Collapse Supernovae based on the Results of Boltzmann Simulations
- Conservative 3+1 General Relativistic Variable Eddington Tensor Radiation Transport Equations
- Neutrino Flavor Conversions in High-Density Astrophysical and Cosmological Environments
- Fast Neutrino Flavor Conversion at Late Time
- Diffuse supernova neutrinos: oscillation effects, stellar cooling and progenitor mass dependence
- Exact solution of multi-angle quantum many-body collective neutrino flavor oscillations
- Multi-azimuthal-angle effects in self-induced supernova neutrino flavor conversions without axial symmetry
- Spurious instabilities in multiangle simulations of collective flavor conversion
- Neutrino flavor pendulum in both mass hierarchies
- Evaluating Approximate Flavor Instability Metrics in Neutron Star Mergers
- Conservative 3+1 General Relativistic Boltzmann Equation
- (Down-to-)Earth matter effect in supernova neutrinos
- Multi-azimuthal-angle instability for different supernova neutrino fluxes
- Combining collective, MSW, and turbulence effects in supernova neutrino flavor evolution
- Linearizing neutrino evolution equations including neutrino-antineutrino pairing correlations
- Suppression of the multi-azimuthal-angle instability in dense neutrino gas during supernova accretion phase
- Linear stability analysis of collective neutrino oscillations without spurious modes
- Flavor stability analysis of dense supernova neutrinos with flavor-dependent angular distributions
- Coupling Neutrino Oscillations and Simulations of Core-Collapse Supernovae
- Uncovering the Matter-Neutrino Resonance
- Detectability of Collective Neutrino Oscillation Signatures in the Supernova Explosion of a 8.8 star
- Breaking the symmetries in self-induced flavor conversions of neutrino beams from a ring
- Neutrino-antineutrino oscillations induced by strong magnetic fields in dense matter
- Neutrino 2012: Outlook - theory
- Neutrino flavour as a test of the explosion mechanism of core-collapse supernovae
- Flavor Oscillations in Core-Collapse Supernovae
- Supernova neutrino detection through neutron emission by nuclei