AI Article Synopsis
- A study of supernova neutrino flavor evolution during the accretion phase reveals that dense ordinary matter dampens expected collective oscillations caused by neutrinos interacting with each other.
- This suppression suggests that oscillations will occur outside the neutrino decoupling region, leading to minimal impact on the dynamics of neutrino heating and the supernova explosion.
- The potential detection of neutrino signals from a future galactic supernova could help determine the neutrino mass hierarchy, particularly if the mixing angle θ(13) is sufficiently large.
Article Abstract
We perform a dedicated study of the supernova (SN) neutrino flavor evolution during the accretion phase, using results from recent neutrino radiation hydrodynamics simulations. In contrast to what was expected in the presence of only neutrino-neutrino interactions, we find that the multiangle effects associated with the dense ordinary matter suppress collective oscillations. The matter suppression implies that neutrino oscillations will start outside the neutrino decoupling region and therefore will have a negligible impact on the neutrino heating and the explosion dynamics. Furthermore, the possible detection of the next galactic SN neutrino signal from the accretion phase, based on the usual Mikheyev-Smirnov-Wolfenstein effect in the SN mantle and Earth matter effects, can reveal the neutrino mass hierarchy in the case that the mixing angle θ(13) is not very small.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.107.151101 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Extreme-Mass-Ratio Inspirals in Ultralight Dark Matter.
Phys Rev Lett
September 2024
CENTRA, Departamento de Física, Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Avenida Rovisco Pais 1, 1049 Lisboa, Portugal.
Previous works have argued that future gravitational-wave detectors will be able to probe the properties of astrophysical environments where binaries coalesce, including accretion disks, but also dark matter structures. Most analyses have resorted to a Newtonian modeling of the environmental effects, which are not suited to study extreme-mass-ratio inspirals immersed in structures of ultralight bosons. In this Letter, we use relativistic perturbation theory to consistently study these systems in spherical symmetry.
View Article and Find Full Text PDFEffects of isoprene on the ozonolysis of Δ-carene and β-caryophyllene: Mechanisms of secondary organic aerosol formation and cross-dimerization.
J Environ Sci (China)
April 2025
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; Hefei National Laboratory, Hefei 230088, China. Electronic address:
Elucidating the mutual effects between the different volatile organic compounds (VOCs) is crucial for comprehending the formation mechanism of atmospheric secondary organic aerosols (SOA). Here, the mixed VOCs experiments of isoprene and Δ-carene/β-caryophyllene were carried out in the presence of O using an indoor smog chamber. The suppression effect of isoprene was recognized by the scanning mobility particle sizer spectrometer, online vacuum ultraviolet free electron laser (VUV-FEL) photoionization aerosol mass spectrometry, and quantum chemical calculations.
View Article and Find Full Text PDFThe onset of aerosol Au nanoparticle crystallization: accretion & explosive nucleation.
Nanoscale
October 2024
Department of Chemical Engineering, University of Melbourne, Melbourne, 3010, Australia.
The crystallization of gold nanoparticles is investigated in the gas-phase by molecular dynamics (MD) that is most relevant to their synthesis by aerosol processes (flame, plasma, or cluster beam deposition). A particle size-dependent metastable region, 200-300 °C wide, is revealed between the melting and freezing points of Au. This region decreases as the MD heating or cooling rates decrease.
View Article and Find Full Text PDFInsights into core-mantle differentiation from bulk Earth melt simulations.
Sci Rep
August 2024
School of Electrical Engineering and Computer Science, Department of Geology and Geophysics, Center for Computation and Technology, Louisiana State University, Baton Rouge, LA, 70803, USA.
The earth is thought to have gone through complex physicochemical changes during the accretion and magma ocean stages. To better understand this evolution process at the fundamental level, we investigate the behavior of a bulk earth melt system by simulating the composition FeMgSiO (in wt%) at high pressure. A deep neural network potential trained by first-principles data can enable accurate molecular dynamics simulation of large supercells that greatly enhances sampling for reliable evaluation of elemental partitioning.
View Article and Find Full Text PDFSubmarine canyon development controlled by slope failure and oceanographic process interactions.
Sci Rep
August 2024
Minderoo-UWA Deep-Sea Research Centre, School of Biological Sciences and UWA Oceans Institute, The University of Western Australia, Perth, WA, 6009, Australia.
The southeastern Australian margin hosts a series of submarine canyons. Although the origin and evolution of canyons within the northwestern segment of the margin is relatively well studied, their quantitative morphology, interaction with longshore drift currents and slope failure remain poorly understood in the southeastern region. In this study, high-resolution bathymetry and 3D seismic reflection datasets revealed five main submarine canyons present in the central offshore Otway Basin.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!