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Measurements on the isotopic and elemental compositions of meteorites, planets, lunar samples, the solar wind, and solar flares since 1960 suggest that the standard solar model may be in error. A new solar model suggests that the observed…

天体物理学 · 物理学 2007-05-23 O. Manuel , Aditya Katragada

The Sudbury Neutrino Observatory has measured the $^8$B solar neutrino flux using an array of 3He proportional counters. Results obtained using a Markov-Chain Monte-Carlo (MCMC) parameter estimation, integrating over a standard extended…

核实验 · 物理学 2019-08-13 Blair Jamieson

Production of a neutrino source through proton induced reaction is studied by using the particle transport code, GEANT4. Unstable isotope such as $^{27}$Si can be produced when $^{27}$Al target is bombarded by 15 MeV energetic proton beams.…

天体物理仪器与方法 · 物理学 2016-11-02 Jae Won Shin , Myung-Ki Cheoun , Toshitaka Kajino

The new generation of powerful instruments is reaching sensitivities and temporal resolutions that will allow multi-messenger astronomy of explosive transient phenomena, with high-energy neutrinos as a central figure. We derive general…

高能天体物理现象 · 物理学 2017-07-12 Claire Guépin , Kumiko Kotera

As photodisintegration of deuterons mimics the disintegration of deuterons by neutrinos, the accurate measurement of the radioactivity from thorium and uranium decay chains in the heavy water in the Sudbury Neutrino Observatory (SNO) is…

核实验 · 物理学 2009-11-07 T. C. Andersen , SNO Collaboration

The concept of putting a neutrino detector in close orbit of the sun has been unexplored until very recently. The primary scientific return is to vastly enhance our understanding of the solar interior, which is a major NASA goal.…

仪器与探测器 · 物理学 2023-07-24 N. Solomey , J. Folkerts , H. Meyer , C. Gimar , J. Novak , B. Doty , T. English , L. Buchele , A. Nelsen , R. McTaggart , M. Christl

$^{222}$Rn is a noble radioactive gas produced along the $^{238}$U decay chain, which is present in the majority of soils and rocks. As $^{222}$Rn is the most relevant source of natural background radiation, understanding its distribution…

Neutrino-antineutrino conversion is an important new physics process. The observation of this phenomenon could indicate total lepton number violation and potential CPT-violation. Searching for the appearance of electron antineutrinos from…

高能物理 - 唯象学 · 物理学 2019-06-26 S. J. Li , J. J. Ling , N. Raper , M. V. Smirnov

We investigate accelerated electron energy spectra for different sources in a large flare using simultaneous observations obtained with two instruments, the Nobeyama Radio Heliograph (NoRH) at 17 and 34 GHz, and the Reuven Ramaty High…

太阳与恒星天体物理 · 物理学 2015-05-13 M. R. Kundu , V. V. Grechnev , S. M. White , E. J. Schmahl , N. S. Meshalkina , L. K. Kashapova

We propose a conceptually and computationally simple method to evaluate the neutrinos emitted by supernova remnants using the observed gamma-ray spectrum. The proposed method does not require any preliminary parametrization of the gamma ray…

天体物理学 · 物理学 2009-02-23 F. L. Villante , F. Vissani

We developed a solar flare prediction model using a deep neural network (DNN), named Deep Flare Net (DeFN). The model can calculate the probability of flares occurring in the following 24 h in each active region, which is used to determine…

太阳与恒星天体物理 · 物理学 2018-05-23 Naoto Nishizuka , Komei Sugiura , Yuki Kubo , Mitsue Den , Mamoru Ishii

Solar nuclear reactions can occasionally produce sub-MeV elusive beyond the Standard Model particles that escape the solar interior without further interactions. This study focuses on massive spin-one particles. We construct the general…

高能物理 - 唯象学 · 物理学 2023-12-29 Francesco D'Eramo , Giuseppe Lucente , Newton Nath , Seokhoon Yun

Solar radio observation is a method used to study the Sun. It is very important for space weather early warning and solar physics research to automatically classify solar radio spectrums in real time and judge whether there is a solar radio…

天体物理仪器与方法 · 物理学 2025-02-07 Jian Chen , Guowu Yuan , Hao Zhou , Chengming Tan , Lei Yang , Siqi Li

The ANTARES telescope has the opportunity to detect transient neutrino sources, such as gamma-ray bursts (GRBs), core-collapse supernovae (SNe), flares of active galactic nuclei (AGNs)... To enhance the sensitivity to these sources, we are…

The Sudbury Neutrino Observatory uses 1000 tonnes of heavy water in an ultra-clean Cherenkov detector situated 2 km underground in Ontario, Canada to study neutrinos from the Sun and other astrophysical sources. The Charged Current (CC)…

高能物理 - 实验 · 物理学 2019-08-14 A. B. McDonald

The predictions of an improved standard solar model are compared with the observations of the four solar neutrino experiments. The improved model includes premain sequence evolution, element diffusion, partial ionization effects, and all…

天体物理学 · 物理学 2015-06-24 Arnon Dar

Direct-detection experiments sensitive to low-energy electron recoils from sub-GeV dark matter (DM) interactions will also be sensitive to solar neutrinos via coherent neutrino-nucleus scattering (CNS), since the recoiling nucleus can…

高能物理 - 唯象学 · 物理学 2018-09-20 Rouven Essig , Mukul Sholapurkar , Tien-Tien Yu

We report on new simulations of the transport of energetic protons originating from the decay of energetic neutrons produced in solar flares. Because the neutrons are fast-moving but insensitive to the solar wind magnetic field, the decay…

太阳与恒星天体物理 · 物理学 2015-06-11 E. E. Chollet , R. A. Mewaldt

In a previous work we showed that keV scale sterile neutrino dark matter $\nu_s$ is possible to be detected in $\beta$ decay experiment using radioactive sources such as $^3$T or $^{106}$Ru. The signals of this dark matter candidate are…

高能物理 - 唯象学 · 物理学 2014-05-28 Wei Liao , Xiao-Hong Wu , Hang Zhou

By combining the results of SNO and Super-Kamiokande one can derive - in the absence of sterile neutrinos - the total neutrino flux produced from $^8$B decay in the Sun. We use this information to check the accuracy of several input…

天体物理学 · 物理学 2009-11-07 G. Fiorentini , B. Ricci