85 citations · 764 across the 30 of their papers we have counts for
22 papers · 1 filter
Energy-dependent slow collective flavor conversion of supernova neutrinos
Heng-Hao Chen, Ian Padilla-Gay, Meng-Ru Wu +2
We study collective slow flavor conversion (SFC) of supernova neutrinos with multi-energy, multi-angle simulations for three representative neutrino spectra in the early accretion,…
Neutrino quantum kinetics for fast flavor conversion in a time-dependent environment
Zewei Xiong, Meng-Ru Wu
Fast flavor conversions (FFCs) of neutrinos, driven by the fast flavor instability (FFI), can reshape the neutrino flavor content in dense astrophysical environments such as core-c…
Machine Learning Detection of Non-Axisymmetric Fast Flavor Instabilities in Compact Objects
Madhurima Chakraborty, Sajad Abbar, Meng-Ru Wu +2
Neutrinos in dense astrophysical environments such as core-collapse supernovae (CCSNe) and neutron star mergers (NSMs) can undergo FFCs, which could develop on extremely small scal…
Occurrence of fast neutrino flavor conversions in QCD phase-transition supernovae
Zewei Xiong, Meng-Ru Wu, Noshad Khosravi Largani +2
Core-collapse supernovae undergoing a first-order quantum chromodynamics (QCD) phase transition experience the collapse of the central proto-neutron star that leads to a second bou…
Flavor Equilibration of Supernova Neutrinos: Exploring the Dynamics of Slow Modes
Ian Padilla-Gay, Heng-Hao Chen, Sajad Abbar +2
Neutrinos experience collective flavor conversion in extreme astrophysical environments such as core-collapse supernovae (CCSNe). One manifestation of collective conversion is slow…
Evolution and the quasistationary state of collective fast neutrino flavor conversion in three dimensions without axisymmetry
Manu George, Zewei Xiong, Meng-Ru Wu +1
We investigate in this work the evolution of the collective fast neutrino flavor conversion (FFC) in a three dimensional (3D) cubic box with periodic boundary condition for three d…
Robust integration of fast flavor conversions in classical neutrino transport
Zewei Xiong, Meng-Ru Wu, Manu George +1
The quantum kinetic evolution of neutrinos in dense environments, such as the core-collapse supernovae or the neutron star mergers, can result in fast flavor conversion (FFC), pres…
Fast neutrino flavor conversions in a supernova: Emergence, evolution, and effects
Zewei Xiong, Meng-Ru Wu, Manu George +4
Fast flavor conversions (FFCs) of neutrinos, which can occur in core-collapse supernovae (CCSNe), are multiangle effects. They depend on the angular distribution of the neutrino's…
Application of Neural Networks for the Reconstruction of Supernova Neutrino Energy Spectra Following Fast Neutrino Flavor Conversions
Sajad Abbar, Meng-Ru Wu, Zewei Xiong
Neutrinos can undergo fast flavor conversions (FFCs) within extremely dense astrophysical environments such as core-collapse supernovae (CCSNe) and neutron star mergers (NSMs). In…
Physics-Informed Neural Networks for Predicting the Asymptotic Outcome of Fast Neutrino Flavor Conversions
Sajad Abbar, Meng-Ru Wu, Zewei Xiong
In the most extreme astrophysical environments, such as core-collapse supernovae (CCSNe) and neutron star mergers (NSMs), neutrinos can undergo fast flavor conversions (FFCs) on ex…
Towards inferring the geometry of kilonovae
Christine E. Collins, Luke J. Shingles, Andreas Bauswein +11
Recent analysis of the kilonova, AT2017gfo, has indicated that this event was highly spherical. This may challenge hydrodynamics simulations of binary neutron star mergers, which u…
Evaluating approximate asymptotic distributions for fast neutrino flavor conversions in a periodic 1D box
Zewei Xiong, Meng-Ru Wu, Sajad Abbar +3
The fast flavor conversions (FFCs) of neutrinos generally exist in core-collapse supernovae and binary neutron-star merger remnants, and can significantly change the flavor composi…
Viscous hydrodynamic evolution of neutron star merger accretion disks: a code comparison
Rodrigo Fernández, Oliver Just, Zewei Xiong +1
The accretion disk formed after a neutron star merger is an important contributor to the total ejecta from the merger, and hence to the kilonova and the -process yields of each…
Self-consistent 3D radiative transfer for kilonovae: directional spectra from merger simulations
Luke J. Shingles, Christine E. Collins, Vimal Vijayan +7
We present three-dimensional radiative transfer calculations for the ejecta from a neutron star merger that include line-by-line opacities for tens of millions of bound-bound trans…
Production of -nuclei from -process seeds: the -process
Zewei Xiong, Gabriel Martínez-Pinedo, Oliver Just +1
We present a new nucleosynthesis process that may take place on neutron-rich ejecta experiencing an intensive neutrino flux. The nucleosynthesis proceeds similarly to the standard…
Evolution of collisional neutrino flavor instabilities in spherically symmetric supernova models
Zewei Xiong, Meng-Ru Wu, Gabriel Martínez-Pinedo +4
We implement a multi-group and discrete-ordinate neutrino transport model in spherical symmetry which allows to simulate collective neutrino oscillations by including realistic col…
Code Comparison for Fast Flavor Instability Simulation
Sherwood Richers, Huaiyu Duan, Meng-Ru Wu +5
The fast flavor instability (FFI) is expected to be ubiquitous in core-collapse supernovae and neutron star mergers. It rapidly shuffles neutrino flavor in a way that could impact…
Entanglement and correlations in fast collective neutrino flavor oscillations
Alessandro Roggero, Ermal Rrapaj, Zewei Xiong
Collective neutrino oscillations play a crucial role in transporting lepton flavor in astrophysical settings like supernovae and neutron star binary merger remnants, which are char…
Many-body effects of collective neutrino oscillations
Zewei Xiong
Collective neutrino oscillations are critical to determine the neutrino flavor content, which has striking impacts on core-collapse supernovae or compact binary merger remnants. It…
Stationary solutions for fast flavor oscillations of a homogeneous dense neutrino gas
Zewei Xiong, Yong-Zhong Qian
We present a method to find the stationary solutions for fast flavor oscillations of a homogeneous dense neutrino gas. These solutions correspond to collective rotation of all neut…
Potential Impact of Fast Flavor Oscillations on Neutrino-driven Winds and Their Nucleosynthesis
Zewei Xiong, Andre Sieverding, Manibrata Sen +1
The wind driven by the intense neutrino emission from a protoneutron star (PNS) is an important site for producing nuclei heavier than the Fe group. Because of certain features in…
Active-sterile Neutrino Oscillations in Neutrino-driven Winds: Implications for Nucleosynthesis
Zewei Xiong, Meng-Ru Wu, Yong-Zhong Qian
A protoneutron star produced in a core-collapse supernova (CCSN) drives a wind by its intense neutrino emission. We implement active-sterile neutrino oscillations in a steady-state…