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We investigate neutrino oscillations from core-collapse supernovae that produce magnetohydrodynamic (MHD) explosions. By calculating numerically the flavor conversion of neutrinos in the highly non-spherical envelope, we study how the…

High Energy Astrophysical Phenomena · Physics 2009-10-02 Shio Kawagoe , Tomoya Takiwaki , Kei Kotake

Observing a high-statistics neutrino signal from a galactic supernova (SN) would allow one to test the standard delayed explosion scenario and may allow one to distinguish between the normal and inverted neutrino mass ordering due to the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Georg G. Raffelt

We show that, in the relativistic limit, the quantum theory of neutrino oscillations can be described through the theory of weak measurements with pre and post-selection. The weak nature of neutrino detection allows simultaneous…

Quantum Physics · Physics 2022-05-26 Yago P. Porto-Silva , Marcos C. de Oliveira

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

The emergent phenomenon of collective neutrino oscillations arises from neutrino-neutrino interactions in environments with very large number of neutrinos. Since such environments are likely sites of the heavy-element synthesis,…

Nuclear Theory · Physics 2018-05-23 A. B. Balantekin

Neutrinos propagating in a dense neutrino gas, such as those expected in core-collapse supernovae (CCSNe) and neutron star mergers (NSMs), can experience fast flavor conversions on relatively short scales. This can happen if the neutrino…

High Energy Astrophysical Phenomena · Physics 2023-05-17 Sajad Abbar

We study the effect of non-vanishing masses and mixings among neutrino flavours on the detection of neutrinos from stellar collapse by a water Cerenkov detector. We consider a realistic framework in which there are three neutrino flavours…

High Energy Physics - Phenomenology · Physics 2009-10-31 Gautam Dutta , D. Indumathi , M. V. N. Murthy , G. Rajasekaran

We investigate the multi-azimuthal angle (MAA) effect on collective neutrino oscillation by considering the three-dimensional neutrino momentum distribution in a realistic electron-capture supernova model with an $8.8 M_{\odot}$ progenitor.…

High Energy Astrophysical Phenomena · Physics 2021-03-17 Masamichi Zaizen , Shunsaku Horiuchi , Tomoya Takiwaki , Kei Kotake , Takashi Yoshida , Hideyuki Umeda , John F. Cherry

Self induced neutrino flavor conversions in the dense regions of stellar core collapse are almost exclusively studied in the standard two flavor scenario. Linear stability analysis has been successfully used to understand these flavor…

High Energy Physics - Phenomenology · Physics 2020-01-09 Madhurima Chakraborty , Sovan Chakraborty

Core collapse supernovae are unique laboratories to study many aspects of neutrino physics. The vicinity of the proto-neutron star in a core-collapse supernova is characterized by large matter and neutrino densities. A salient feature of…

Solar and Stellar Astrophysics · Physics 2015-06-11 A. B. Balantekin

In a core collapse supernova, collective oscillations of neutrinos emitted by the proto-neutron star significantly modifies the partition of energy between different flavors in a way which is potentially important for the nucleosynthesis of…

High Energy Astrophysical Phenomena · Physics 2017-03-29 T. Bulmus , Y. Pehlivan

Neutrino-neutrino interactions in dense neutrino streams, like those emitted by a core-collapse supernova, can lead to self-induced neutrino flavor conversions. While this is a nonlinear phenomenon, the onset of these conversions can be…

High Energy Physics - Phenomenology · Physics 2015-02-02 Arka Banerjee , Amol Dighe , Georg Raffelt

A few seconds after bounce in a core-collapse supernova, the shock wave passes the density region corresponding to resonant neutrino oscillations with the ``atmospheric'' neutrino mass difference. The transient violation of the adiabaticity…

Astrophysics · Physics 2009-11-10 R. Tomas , M. Kachelriess , G. Raffelt , A. Dighe , H. -T. Janka , L. Scheck

The neutrinos from galactic supernovae can be detected by the Sudbury Neutrino Observatory and the Super-Kamiokande. The effect of neutrino mass can show up in the observed neutrino signal by (i) delay in the time of flight and (ii)…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sandhya Choubey , Kamales Kar

Neutrinos are densely populated deep inside the core of massive stars after their gravitational collapse to produce supernova explosions and form compact stars such as neutron stars (NS) and black holes (BH). It has been considered that…

High Energy Astrophysical Phenomena · Physics 2019-05-29 Milad Delfan Azari , Shoichi Yamada , Taiki Morinaga , Wakana Iwakami , Hirotada Okawa , Hiroki Nagakura , Kohsuke Sumiyoshi

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

Neutrino oscillation experiments present anomalous results across a vast range of baselines and energies. Here we show that a 3+1 scenario in which sterile neutrinos feel a novel matter potential $V_s$ proportional to background density of…

High Energy Physics - Phenomenology · Physics 2026-05-15 Sabya Sachi Chatterjee , Antonio Palazzo

Collective flavor transformations in supernovae, caused by neutrino-neutrino interactions, are essentially a two-flavor phenomenon driven by the atmospheric mass difference and the small mixing angle theta_13. In the two-flavor…

High Energy Physics - Phenomenology · Physics 2010-04-29 Basudeb Dasgupta , Georg G. Raffelt , Irene Tamborra

We investigate the collision-induced flavor instability in homogeneous, isotropic, dense neutrino gases in the two-flavor mixing scenario with energy-dependent scattering. We uncover a simple expression of the growth rate of this…

High Energy Physics - Phenomenology · Physics 2023-04-27 Yu-Chia Lin , Huaiyu Duan

We all know that in the dense anisotropic interior of the star, neutrino-neutrino forward-scattering can lead to fast collective neutrino oscillations, which has striking consequences on flavor dependent neutrino emission and can be crucial…

High Energy Physics - Phenomenology · Physics 2021-01-06 Soumya Bhattacharyya
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