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Predicting the flavor composition of neutrinos from supernovae is a challenging task, primarily due to the high neutrino densities at their core. In such an environment, neutrino self-interactions give rise to collective effects that have…

High Energy Physics - Phenomenology · Physics 2025-06-03 Antonio Capanema , Yago Porto , Maria Manuela Saez

Neutrinos are excellent probes of the inner structures of supernovas. However, an understanding of their dynamics remains incomplete, which is crucial for properly interpreting the detector data. The huge matter density inside a core…

High Energy Astrophysical Phenomena · Physics 2025-06-03 Indrajit Ghose , Amitabha Lahiri

The non-isotropic nature of the neutrino emission from a supernova (SN) core might potentially affect the flavor evolution of the neutrino ensemble, via neutrino-neutrino interactions in the deepest SN regions. We investigate the dependence…

High Energy Physics - Phenomenology · Physics 2015-03-17 Alessandro Mirizzi , Ricard Tomàs

Convection that develops behind the shock front during the first second of a core-collapse supernova explosion is believed to play a crucial role in the explosion mechanism. We demonstrate that the resulting turbulent density fluctuations…

Astrophysics · Physics 2007-05-23 Alexander Friedland , Andrei Gruzinov

The supernova neutrino flavor evolution in the presence of the non-trivial neutrino magnetic moment and strong magnetic field is numerically derived using the two-flavor and single-angle approximation. The novel properties of collective…

High Energy Physics - Phenomenology · Physics 2021-05-18 Ziyi Yuan , Yu-Feng Li , Xiang Zhou

The collapse of supermassive stars (SMSs, $M\gtrsim10^4\,M_\odot$) to black holes is accompanied by a prodigious flux of neutrinos of all flavors. These are produced thermally via $e^\pm$ annihilations, mostly in the core and just before…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-07 Kyle S. Kehrer , George M. Fuller , Ian Padilla-Gay , Chad T. Kishimoto

In astrophysical environments such as core-collapse supernovae and neutron star-neutron star or neutron star-black hole mergers where dense neutrino media are present, matter-neutrino resonances (MNRs) can occur when the neutrino…

High Energy Physics - Phenomenology · Physics 2015-11-24 Meng-Ru Wu , Huaiyu Duan , Yong-Zhong Qian

Current neutrino experiments measure the neutrino mixing parameters with an unprecedented accuracy. The upcoming generation of experiments will be sensitive to subdominant effects that can give information on the unknown neutrino…

High Energy Physics - Phenomenology · Physics 2018-01-30 Y. Farzan , M. Tortola

Neutrinos experience collective flavor conversion in extreme astrophysical environments such as core-collapse supernovae (CCSNe). One manifestation of collective conversion is slow flavor conversion (SFC), which has recently attracted…

High Energy Astrophysical Phenomena · Physics 2025-09-03 Ian Padilla-Gay , Heng-Hao Chen , Sajad Abbar , Meng-Ru Wu , Zewei Xiong

We recently studied neutrinos flavor oscillations in vacuum within conformal coupling models. In this paper, we extend that analysis by investigating neutrino flavor oscillations inside matter within a general conformal coupling scenario.…

High Energy Physics - Phenomenology · Physics 2023-05-15 Fayçal Hammad , Parvaneh Sadeghi , Nicolas Fleury

In a 1996 JRO Fellowship Research Proposal (Los Alamos), the author suggested that neutrino oscillations may provide a powerful indirect energy transport mechanism to supernovae explosions. The principal aim of this addendum is to present…

Astrophysics · Physics 2008-11-26 D. V. Ahluwalia-Khalilova

Flavor changing (FC) neutrino-matter interactions can account for the zenith-angle dependent deficit of atmospheric neutrinos observed in the SuperKamiokande experiment, without directly invoking neither neutrino mass, nor mixing. We find…

High Energy Physics - Phenomenology · Physics 2009-09-17 M. C. Gonzalez-Garcia , M. M. Guzzo , P. I. Krastev , H. Nunokawa , O. L. G. Peres , V. Pleitez , J. W. F. Valle , R. Zukanovich Funchal

Supernova neutrinos can exhibit a rich variety of flavor conversion mechanisms. In particular, they can experience "fast" self-induced flavor conversions almost immediately above the core. Very recently, a novel method has been proposed to…

High Energy Physics - Phenomenology · Physics 2017-09-13 Francesco Capozzi , Basudeb Dasgupta , Eligio Lisi , Antonio Marrone , Alessandro Mirizzi

The neutrinos and antineutrinos of all the three flavors released from a galactic supernova will be detected in the water Cerenkov detectors. We show that even though the neutral current interaction is flavor blind, and hence neutrino…

High Energy Physics - Phenomenology · Physics 2009-10-31 Sandhya Choubey , Kamales Kar

We bring to light a novel mechanism through which turbulent matter density fluctuations can induce collective neutrino flavor conversions in core-collapse supernovae, i.e., the leakage of flavor instabilities between different Fourier…

High Energy Astrophysical Phenomena · Physics 2021-03-03 Sajad Abbar

This letter proposes an alternative quantum mechanical picture for the observed phenomena of neutrino oscillations. It is assumed in the following that neutrinos interact via diabatic (or localised) interactions with a new particle field,…

High Energy Physics - Phenomenology · Physics 2020-12-18 M. Bergevin

Self-induced flavor conversions of supernova (SN) neutrinos can strongly modify the flavor dependent fluxes. We perform a linearized flavor stability analysis with accretion-phase matter profiles of a 15 M_sun spherically symmetric model…

Solar and Stellar Astrophysics · Physics 2015-03-19 Srdjan Sarikas , Georg G. Raffelt , Lorenz Hüdepohl , Hans-Thomas Janka

We study the flavor evolution of a dense gas initially consisting of pure mono-energetic $\nu_e$ and $\bar\nu_e$. Using adiabatic invariants and the special symmetry in such a system we are able to calculate the flavor evolution of the…

Astrophysics · Physics 2008-11-26 Huaiyu Duan , George M. Fuller , J. Carlson , Yong-Zhong Qian

For neutrinos streaming from a supernova (SN) core, dense matter suppresses self-induced flavor transformations if the electron density n_e significantly exceeds the neutrino density n_nu in the conversion region. If n_e is comparable to…

Astrophysics · Physics 2008-11-26 A. Esteban-Pretel , A. Mirizzi , S. Pastor , R. Tomas , G. G. Raffelt , P. D. Serpico , G. Sigl

We present a new analysis of non-universal and flavor changing non-standard neutrino interactions (NSI) in \nu_e e or \bar{\nu}_e e scattering. Our global analysis of these process includes all relevant experiments, such as the most recent…

High Energy Physics - Phenomenology · Physics 2009-09-17 J. Barranco , O. G. Miranda , C. A. Moura , J. W. F. Valle
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