Time dependent signatures of core-collapse supernova neutrinos at HALO
arXiv:2101.01797 · doi:10.1103/PhysRevD.103.043016
Abstract
We calculate the response of a lead-based detector, such as the Helium and Lead Observatory (HALO) or its planned upgrade HALO-1kt to a galactic core-collapse supernova. We pay particular attention to the time dependence of the reaction rates. All reaction rates decrease as the neutrino luminosity exponentially drops during the cooling period but the ratio of one-neutron (1n) to two-neutron (2n) event rates in HALO is independent of this overall decrease. Nevertheless, we find that this ratio still changes with time due to the changing character of neutrino flavor transformations with the evolving conditions in the supernova. In the case of inverted hierarchy, this is caused by the fact that the spectral splits become less and less sharp with the decreasing luminosity. In the case of normal hierarchy, it is caused by the passage of the shock wave through the Mikheyev-Smirnov-Wolfenstein resonance region. However, in both cases, we find that the change in the ratio of 1n to 2n event rates is limited to a few percent.
arXiv comment12 pages with 7 figures
References in corpus (39)
- Radioactive 26Al and massive stars in the Galaxy
- Collective Neutrino Oscillations
- Monte Carlo Study of Supernova Neutrino Spectra Formation
- Protoneutron star evolution and the neutrino driven wind in general relativistic neutrino radiation hydrodynamics simulations
- Simulation of Coherent Non-Linear Neutrino Flavor Transformation in the Supernova Environment I: Correlated Neutrino Trajectories
- Supernova Neutrino Detection
- Simulation of the Spherically Symmetric Stellar Core Collapse, Bounce, and Postbounce Evolution of a 13 Solar Mass Star with Boltzmann Neutrino Transport, and Its Implications for the Supernova Mechanism
- Self-induced spectral splits in supernova neutrino fluxes
- Collective neutrino flavor conversion: Recent developments
- The Youngest Galactic Supernova Remnant: G1.9+0.3
- Coherent Development of Neutrino Flavor in the Supernova Environment
- Adiabaticity and spectral splits in collective neutrino transformations
- What can be learned from a future supernova neutrino detection?
- Neutrino Mass Hierarchy and Stepwise Spectral Swapping of Supernova Neutrino Flavors
- Neutrino signatures of supernova shock and reverse shock propagation
- A dynamical collective calculation of supernova neutrino signals
- The role of -induced reactions on lead and iron in neutrino detectors
- Analysis of energy- and time-dependence of supernova shock effects on neutrino crossing probabilities
- A new possibility of the fast neutrino-flavor conversion in the pre-shock region of core-collapse supernova
- A new determination of supernova rates and a comparison with indicators for galactic star formation
- Collective neutrinos oscillation in matter and CP-violation
- What Can Be Learned with a Lead-Based Supernova-Neutrino Detector?
- Neutrino mass hierarchy and three-flavor spectral splits of supernova neutrinos
- Shock propagation and neutrino oscillation in supernova
- Phase effects in neutrino conversions during a supernova shock wave
- Neutrino beams as a probe of the nuclear isospin and spin-isospin excitations
- Nucleosynthesis of Light Elements and Heavy r-Process Elements through the nu-Process in Supernova Explosion
- Possible CP-Violation effects in core-collapse Supernovae
- Supernova Relic Neutrinos and the Supernova Rate Problem: Analysis of Uncertainties and Detectability of ONeMg and Failed Supernovae
- Overall Feature of CP dependence for Neutrino Oscillation Probability in Arbitrary Matter Profile
- The neutrino signal at HALO: learning about the primary supernova neutrino fluxes and neutrino properties
- Three Flavor Neutrino Oscillations in Matter: Flavor Diagonal Potentials, the Adiabatic Basis and the CP phase
- Multi-angle effects in self-induced oscillations for different supernova neutrino fluxes
- Suppression of the multi-azimuthal-angle instability in dense neutrino gas during supernova accretion phase
- CP violation effects on the neutrino degeneracy parameters in the Early Universe
- Neutrino Magnetic Moment, CP Violation and Flavor Oscillations in Matter
- Retrieval of energy spectra for all flavor of neutrinos from core-collapse supernova with multiple detectors
- Detecting supernova neutrinos with iron and lead detectors
- Hybrid method to resolve the neutrino mass hierarchy by supernova (anti)neutrino induced reactions