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It has been recently shown that the flavor composition of a self-interacting neutrino gas can spontaneously acquire a time-dependent pulsating component during its flavor evolution. In this work, we perform a more detailed study of this…

High Energy Physics - Phenomenology · Physics 2016-04-26 Francesco Capozzi , Basudeb Dasgupta , Alessandro Mirizzi

Long-term ideal and resistive magnetohydrodynamics (MHD) simulations in full general relativity are performed for a massive neutron star formed as a remnant of binary neutron star mergers. Neutrino radiation transport effects are taken into…

High Energy Astrophysical Phenomena · Physics 2021-03-17 Masaru Shibata , Sho Fujibayashi , Yuichiro Sekiguchi

We review the particle physics ingredients affecting the normalization, shape, and flavor composition of astrophysical neutrinos fluxes, such as different production modes, magnetic field effects on the secondaries (muons, pions, kaons),…

High Energy Astrophysical Phenomena · Physics 2012-01-27 Walter Winter

We argue that an effective flavor discrimination in neutrino telescopes is the key to probe the flavor ratios of astrophysical neutrinos at the source and flavor transition mechanisms of these neutrinos during their propagations from the…

High Energy Physics - Phenomenology · Physics 2011-03-22 G. -L. Lin , T. C. Liu , K. -C. Lai , M. A. Huang

The measurement of the flavor composition of the neutrino fluxes from astrophysical sources has been proposed as a method to study not only the nature of their emission mechanisms, but also the neutrino fundamental properties. It is however…

Astrophysics · Physics 2008-12-18 Paolo Lipari , Maurizio Lusignoli , Davide Meloni

The existence of eV-mass sterile neutrinos is not ruled out because of persistent experimental anomalies. Upcoming multi-messenger detections of neutron-star merger remnants could provide indirect constraints on the existence of these…

High Energy Astrophysical Phenomena · Physics 2023-01-02 Garðar Sigurðarson , Irene Tamborra , Meng-Ru Wu

We performed general relativistic, long-term, axisymmetric neutrino radiation hydrodynamics simulations for the remnant formed after the binary neutron star merger, which consist of a massive neutron star and a torus surrounding it. As an…

High Energy Astrophysical Phenomena · Physics 2018-07-25 Sho Fujibayashi , Yuichiro Sekiguchi , Kenta Kiuchi , Masaru Shibata

Neutrino interactions with matter play an important role in determining the nucleosynthesis outcome in explosive astrophysical environments such as core-collapse supernovae or mergers of compact objects. In this article, we first discuss…

High Energy Astrophysical Phenomena · Physics 2016-03-16 Meng-Ru Wu , Gabriel Martinez-Pinedo , Yong-Zhong Qian

We explore the effects of rapid rotation on the properties of neutrino-heated winds from proto-neutron stars (PNS) formed in core-collapse supernovae or neutron-star mergers by means of three-dimensional general-relativistic hydrodynamical…

High Energy Astrophysical Phenomena · Physics 2022-06-10 Dhruv K. Desai , Daniel M. Siegel , Brian D. Metzger

According to recent studies, the collective flavor evolution of neutrinos in core-collapse supernovae depends strongly on the flavor-dependent angular distribution of the local neutrino radiation field, notably on the angular intensity of…

High Energy Astrophysical Phenomena · Physics 2017-04-27 Irene Tamborra , Lorenz Huedepohl , Georg Raffelt , Hans-Thomas Janka

We study flavor oscillations of low energy neutrinos propagating in dense matter of a rotating neutron star. On the basis of the exact solutions of the wave equations for neutrinos mass eigenstates we derive the transition probability for…

High Energy Physics - Phenomenology · Physics 2017-08-23 Maxim Dvornikov

We study the merger of black hole-neutron star binaries by fully general-relativistic neutrino-radiation-hydrodynamics simulations throughout the coalescence, particularly focusing on the role of neutrino irradiation in dynamical mass…

High Energy Astrophysical Phenomena · Physics 2018-01-23 Koutarou Kyutoku , Kenta Kiuchi , Yuichiro Sekiguchi , Masaru Shibata , Keisuke Taniguchi

We present a systematic numerical-relativity study of the dynamical ejecta, winds and nucleosynthesis in neutron star merger remnants. Binaries with the chirp mass compatible with GW170817, different mass ratios, and five microphysical…

The outflows from neutrino-cooled black-hole (BH) accretion disks formed in neutron-star mergers or cores of collapsing stars are expected to be neutron-rich enough to explain a large fraction of elements created by the rapid…

High Energy Astrophysical Phenomena · Physics 2022-05-11 Oliver Just , Sajad Abbar , Meng-Ru Wu , Irene Tamborra , Hans-Thomas Janka , Francesco Capozzi

Neutrinos propagating in dense neutrino media such as core-collapse supernovae and neutron star merger remnants can experience the so-called fast flavor conversions on scales much shorter than those expected in vacuum. A very generic class…

High Energy Astrophysical Phenomena · Physics 2022-03-31 Sajad Abbar , Francesco Capozzi

The streaming of neutrinos in an inhomogeneous medium is known to affect the physics of flavor conversion. We employ an ensemble of single-crossed angular distributions and explore the physics of flavor conversion, while neutrinos propagate…

High Energy Astrophysical Phenomena · Physics 2025-10-22 Manuel Goimil-García , Irene Tamborra

The core-collapse of massive stars and merger of neutron star binaries are among the most promising candidate sites for the production of high-energy cosmic neutrinos. We demonstrate that the high-energy neutrinos produced in such extreme…

High Energy Physics - Phenomenology · Physics 2024-02-06 Sajad Abbar , Jose Alonso Carpio , Kohta Murase

We consider neutrino mixing and oscillations in presence of an arbitrary constant magnetic field with nonzero transversal $B_{\perp}$ and longitudinal $B_{\parallel}$ components with respect to the direction of neutrino propagation. The…

High Energy Physics - Phenomenology · Physics 2016-06-22 Riccardo Fabbricatore , Alexander Grigoriev , Alexander Studenikin

The undetermined neutrino mass hierarchy may leave an observable imprint on the neutrino fluxes from a core-collapse supernova (SN). The interpretation of the observables, however, is subject to the uncertain SN models and the flavor…

High Energy Physics - Phenomenology · Physics 2015-06-18 S. H. Chiu , Chu-Ching Huang , Kwang-Chang Lai

Neutrino oscillations, especially to light sterile states, can affect the nucleosynthesis yields because of their possible feedback effect on the electron fraction (Ye). For the first time, we perform nucleosynthesis calculations for…

Solar and Stellar Astrophysics · Physics 2015-08-19 Else Pllumbi , Irene Tamborra , Shinya Wanajo , H. -Thomas Janka , Lorenz Huedepohl