New developments in flavor evolution of a dense neutrino gas

I Tamborra, S Shalgar - Annual Review of Nuclear and Particle …, 2021 - annualreviews.org
Neutrino–neutrino refraction dominates the flavor evolution in core-collapse supernovae,
neutron star mergers, and the early Universe. Ordinary neutrino flavor conversions develop …

Fast neutrino flavor conversion in core-collapse supernovae: A parametric study in 1D models

J Ehring, S Abbar, HT Janka, G Raffelt, I Tamborra - Physical Review D, 2023 - APS
We explore the impact of small-scale flavor conversions of neutrinos, the so-called fast flavor
conversions (FFCs), on the dynamical evolution and neutrino emission of core-collapse …

Collisional instabilities of neutrinos and their interplay with fast flavor conversion in compact objects

L Johns, Z Xiong - Physical Review D, 2022 - APS
Fast and collisional flavor instabilities possibly occur in the neutrino decoupling regions of
core-collapse supernovae and neutron-star mergers. To gain a better understanding of the …

Neutrino fast flavor pendulum. II. Collisional damping

I Padilla-Gay, I Tamborra, GG Raffelt - Physical Review D, 2022 - APS
In compact astrophysical objects, the neutrino density can be so high that neutrino-neutrino
refraction can lead to fast flavor conversion of the kind ν e ν¯ e↔ ν x ν¯ x with x= μ, τ …

Fast flavor depolarization of supernova neutrinos

S Bhattacharyya, B Dasgupta - Physical Review Letters, 2021 - APS
Flavor-dependent neutrino emission is critical to the evolution of a supernova and its
neutrino signal. In the dense anisotropic interior of the star, neutrino-neutrino forward …

Neutrino flavor pendulum reloaded: The case of fast pairwise conversion

I Padilla-Gay, I Tamborra, GG Raffelt - Physical Review Letters, 2022 - APS
In core-collapse supernovae or compact binary merger remnants, neutrino-neutrino
refraction can spawn fast pair conversion of the type ν e ν¯ e↔ ν x ν¯ x (with x= μ, τ) …

Three-dimensional simulation of a core-collapse supernova for a binary star progenitor of SN 1987A

K Nakamura, T Takiwaki, K Kotake - Monthly Notices of the …, 2022 - academic.oup.com
We present results from a self-consistent, non-rotating core-collapse supernova simulation
in three spatial dimensions using a binary evolution progenitor model of SN 1987A. This …

Neutrino oscillations in supernovae: Angular moments and fast instabilities

L Johns, H Nagakura, GM Fuller, A Burrows - Physical Review D, 2020 - APS
Recent theoretical work indicates that the neutrino radiation in core-collapse supernovae
may be susceptible to flavor instabilities that set in far behind the shock, grow extremely …

Fast neutrino flavor instability in the neutron-star convection layer of three-dimensional supernova models

R Glas, HT Janka, F Capozzi, M Sen, B Dasgupta… - Physical Review D, 2020 - APS
It has been speculated for a long time that neutrinos from a supernova (SN) may undergo
fast flavor conversions near the collapsed stellar core. We perform a detailed study of this …

Neutrino flavor conversion, advection, and collisions: Toward the full solution

S Shalgar, I Tamborra - Physical Review D, 2023 - APS
At high densities in compact astrophysical sources, the coherent forward scattering of
neutrinos onto each other is responsible for making the flavor evolution nonlinear. Under the …