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We search for an excess of electrons and positrons in the interplanetary space from the decays of heavy neutrinos produced in nuclear reactions in the Sun. Using measurements of the electron spectra in the MeV range from the Ulysses and…

High Energy Astrophysical Phenomena · Physics 2025-05-14 Marco Drewes , Jan Heisig , Valentin Weber

We show that the Deep Underground Neutrino Experiment (DUNE), with significant but feasible new efforts, has the potential to deliver world-leading results in solar neutrinos. With a 100 kton-year exposure, DUNE could detect $\gtrsim 10^5$…

High Energy Physics - Phenomenology · Physics 2020-07-27 Francesco Capozzi , Shirley Weishi Li , Guanying Zhu , John F. Beacom

An analysis of neutrino electron scattering as applied to the SuperKamiokande solar neutrino experiment with the data from the Homestake experiment leads to an upper bound on the neutrino magnetic moment in the range…

High Energy Physics - Phenomenology · Physics 2007-05-23 Joao Pulido , Ana M. Mourao

Despite the fact that the solar neutrino flux is now well-understood in the context of matter-affected neutrino mixing, we find that it is not yet possible to set a strong and model-independent bound on solar neutrino decays. If neutrinos…

High Energy Physics - Phenomenology · Physics 2009-11-07 John F. Beacom , Nicole F. Bell

Neutron stars, just after their formation, are surrounded by expanding, dense, and very hot envelopes which radiate thermal photons. Iron nuclei can be accelerated in the wind zones of such energetic pulsars to very high energies. These…

Astrophysics · Physics 2009-11-07 J. H. Beall , W. Bednarek

We study the prospects for measuring the low-energy components of the solar neutrino flux in future direct dark matter detection experiments. We show that for a depletion of $^{136}$Xe by a factor of 100 relative to its natural abundance,…

Solar and Stellar Astrophysics · Physics 2019-02-20 Jayden L. Newstead , Louis E. Strigari , Rafael F. Lang

The next galactic core-collapse supernova will deliver a wealth of neutrinos which for the first time we are well-situated to measure. These explosions produce neutrinos with energies between 10 and 100 MeV over a period of tens of seconds.…

Instrumentation and Methods for Astrophysics · Physics 2017-10-03 Justin A. Vasel , Andrey Sheshukov , Alec Habig

Solar neutrino detection is known to be a very challenging task, due to the minuscule absorption cross-section and mass of the neutrino. One research showed that relative large solar-flares affected the decay-rates of Mn-54 in December…

Solar and Stellar Astrophysics · Physics 2022-01-11 Jonathan Walg , Anatoly Rodnianski , Itzhak Orion

We have developed a neutrino detector with threshold energies from ~0.115 to 105 MeV in a clean detection mode almost completely void of accidental backgrounds. It was initially developed for the NASA $\nu$SOL project to put a solar…

As is well known, dark matter direct detection experiments will ultimately be limited by a "neutrino floor," due to the scattering of nuclei by MeV neutrinos from, e.g., nuclear fusion in the Sun. Here we point out the existence of a new…

High Energy Astrophysical Phenomena · Physics 2017-11-16 Kenny C. Y. Ng , John F. Beacom , Annika H. G. Peter , Carsten Rott

Neutrinos give a novel probe to explore deep interior of astrophysical objects, which otherwise is not accessible with optical observations; among notable examples are solar and supernova neutrinos. We show that there is a new class of…

Astrophysics · Physics 2009-11-11 A. M. Serenelli , M. Fukugita

More than 40 years ago, neutrinos where conceived as a way to test the validity of the solar models which tell us that stars are powered by nuclear fusion reactions. The first measurement of the neutrino flux, in 1968 in the Homestake mine…

High Energy Physics - Experiment · Physics 2009-05-12 Lino Miramonti

By lowering their energy threshold direct dark matter searches can reach the neutrino floor with experimental technology now in development. The 7Be flux can be detected with $\sim 10$ eV nuclear recoil energy threshold and 50 kg-yr…

Cosmology and Nongalactic Astrophysics · Physics 2016-06-01 Louis E. Strigari

The results of all currently operating solar neutrino experiments are analyzed in the framework of the resonant neutrino spin--flavor precession scenario including the effects of neutrino mixing. Nine different profiles of the solar…

High Energy Physics - Phenomenology · Physics 2009-09-25 E. Kh. Akhmedov , A. Lanza , S. T. Petcov

Assuming neutrino oscillations occur, the pp electron neutrino flux is uncertain by at least a factor of two, the ${\rm ^8B}$ flux by a factor of five, and the ${\rm ^7Be}$ flux by a factor of forty-five. Calculations of the expected…

High Energy Physics - Phenomenology · Physics 2010-11-09 J. N. Bahcall , P. I. Krastev

We study the sensitivity of large-scale xenon detectors to low-energy solar neutrinos, to coherent neutrino-nucleus scattering and to neutrinoless double beta decay. As a concrete example, we consider the xenon part of the proposed DARWIN…

Instrumentation and Detectors · Physics 2014-02-10 L. Baudis , A. Ferella , A. Kish , A. Manalaysay , T. Marrodan Undagoitia , M. Schumann

Neutralino annihilations in the Sun to weak boson and top quark pairs lead to high-energy neutrinos that can be detected by the IceCube and KM3 experiments in the search for neutralino dark matter. We calculate the neutrino signals from…

High Energy Physics - Phenomenology · Physics 2008-11-26 Vernon Barger , Wai-Yee Keung , Gabe Shaughnessy , Adam Tregre

I derive an upper bound on the electron neutrino component of the diffuse supernova neutrino flux from the constraint on the antineutrino component at SuperKamiokande. The connection between antineutrino and neutrino channels is due to the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Cecilia Lunardini

We present a hadronic model of activity for Galactic gamma-ray-loud binaries, in which the multi-TeV neutrino flux from the source can be much higher and/or harder than the detected TeV gamma-ray flux. This is related to the fact that most…

Astrophysics · Physics 2009-03-12 A. Neronov , M. Ribordy