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Related papers: Shockwaves in Supernovae: New Implications on the …

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We study supernova neutrino flux variations in the IceCube detector, using 3D models based on a simplified neutrino transport scheme. The hemispherically integrated neutrino emission shows significantly smaller variations compared with our…

High Energy Astrophysical Phenomena · Physics 2015-02-02 Tina Lund , Annop Wongwathanarat , Hans-Thomas Janka , Ewald Müller , Georg Raffelt

The signatures of sterile neutrinos in the supernova neutrino signal in megaton water Cerenkov detectors are studied. Time dependent modulation of the neutrino signal emerging from the sharp changes in the oscillation probability due to…

High Energy Physics - Phenomenology · Physics 2008-11-26 Sandhya Choubey , N. P. Harries , G. G. Ross

A new mechanism of supernova shock revival is proposed, which involves resonant spin--flavor precession of neutrinos with a transition magnetic moment in the magnetic field of the supernova. The mechanism can be operative in supernovae for…

High Energy Physics - Phenomenology · Physics 2008-11-26 E. Kh. Akhmedov , A. Lanza , S. T. Petcov , D. W. Sciama

We examine the propagation and flavor oscillations of neutrinos under the influence of gravitational waves (GWs) with an arbitrary polarization. We rederive the effective Hamiltonian for the system of three neutrino flavors using the…

High Energy Physics - Phenomenology · Physics 2021-08-24 Maxim Dvornikov

We calculate the effects of random density fluctuations on two-neutrino flavor transformations (${\nu}_{\tau(\mu)} \rightleftharpoons {\nu}_e$) in the post-core-bounce supernova environment. In particular, we follow numerically the flavor…

Astrophysics · Physics 2010-01-15 F. N. Loreti , Y. -Z. Qian , G. M. Fuller , A. B. Balantekin

We calculate the differential scattering rate for thermal neutrinos in a hot and dilute gas of interacting neutrons using linear response theory. The dynamical structure factors for density and spin fluctuations of the strongly interacting…

Nuclear Theory · Physics 2018-08-08 Paulo F. Bedaque , Sanjay Reddy , Srimoyee Sen , Neill C. Warrington

We apply the model of stimulated neutrino transitions to neutrinos traveling through turbulence on a non-constant density profile. We describe a method to predict the location of large amplitude transitions and demonstrate the effectiveness…

High Energy Physics - Phenomenology · Physics 2015-01-14 Kelly M. Patton , James P. Kneller , Gail C. McLaughlin

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

If a sizeable fraction of the energy of supernova remnant shocks is channeled into energetic particles (commonly identified with Galactic cosmic rays), then the morphological evolution of the remnants must be distinctly modified. Evidence…

High Energy Astrophysical Phenomena · Physics 2015-05-14 Gilles Ferrand , Anne Decourchelle , Jean Ballet , Romain Teyssier , Federico Fraschetti

Neutrino-neutrino scattering could have a large secret component that would turn neutrinos within a supernova (SN) core into a self-coupled fluid. Neutrino transport within the SN core, emission from its surface, expansion into space, and…

High Energy Physics - Phenomenology · Physics 2024-01-12 Damiano F. G. Fiorillo , Georg Raffelt , Edoardo Vitagliano

During the accretion phase of a core-collapse supernovae, large amplitude turbulence is generated by the combination of the standing accretion shock instability and convection driven by neutrino heating. The turbulence directly affects the…

High Energy Astrophysical Phenomena · Physics 2017-06-01 James P. Kneller , Mithi de los Reyes

Motivated by recent hints for sterile neutrinos from the reactor anomaly, we study active-sterile conversions in a three-flavor scenario (2 active + 1 sterile families) for three different representative times during the neutrino-cooling…

Solar and Stellar Astrophysics · Physics 2015-05-30 Irene Tamborra , Georg G. Raffelt , Lorenz Huedepohl , Hans-Thomas Janka

In dense environments, standard and non-standard neutrino interactions with the background particles trigger a variety of flavor mechanisms, which can impact r-process nucleosynthetic abundances. Future observations of a(n) (extra)galactic…

High Energy Physics - Phenomenology · Physics 2021-11-17 Maria Cristina Volpe

A liquid Argon TPC (ICARUS-like) has the ability to detect clean neutrino bursts from type-II supernova collapses. In this paper, we consider for the first time the four possible detectable channels, namely, the elastic scattering on…

High Energy Physics - Phenomenology · Physics 2008-11-26 I. Gil-Botella , A. Rubbia

It is greatly expected that the relic neutrino background from past supernovae is detected by Superkamiokande (SK) which is now under construction. We calculate the spectrum and the event rate at SK systematically by using the results of…

Astrophysics · Physics 2010-11-01 Tomonori Totani , Katsuhiko Sato

This talk reviews three inputs important to neutrino-induced nucleosynthesis in a supernova: 1) "standard" properties of the supernova neutrino flux, 2) effects of phenomena like neutrino oscillations on that flux, and 3) nuclear structure…

Nuclear Theory · Physics 2015-06-26 W. C. Haxton

At the present time even the most sophisticated, multi-dimensional simulations of core-collapse supernovae do not (self-consistently) include neutrino flavor transformation. This physics is missing despite the importance of neutrinos in the…

High Energy Astrophysical Phenomena · Physics 2020-10-14 Charles J. Stapleford , Carla Fröhlich , James P. Kneller

The usual treatments of the neutrino flavor-evolution, beyond a surface above the last scattering, assume identical angular distributions at this distance for the different initial (unmixed) flavors, and for particles and antiparticles.…

High Energy Astrophysical Phenomena · Physics 2016-03-02 R. F. Sawyer

When the neutrino density is very high, as in core-collapse supernovae, neutrino-neutrino interactions are not negligible and can appreciably affect the evolution of flavour. The physics of these phenomena is briefly highlighted, and their…

High Energy Physics - Phenomenology · Physics 2009-05-18 Irene Tamborra

We present new results from the only 2D multi-group, multi-angle calculations of core-collapse supernova evolution. The first set of results from these calculations was published in Ott et al. (2008). We have followed a nonrotating and a…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Timothy D. Brandt , Adam Burrows , Christian D. Ott , Eli Livne
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