First search for GeV neutrinos from bright gamma-ray solar flares using the IceCube Neutrino Observatory
| Autor: | Gwenhaël De Wasseige |
|---|---|
| Přispěvatelé: | AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), IceCube, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Proton
neutrino: solar Solar neutrino Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astrophysics power spectrum energy: thermal meson 7. Clean energy p: acceleration neutrino: flux IceCube Neutrino Observatory IceCube energy: threshold Astrophysics::Solar and Stellar Astrophysics Nuclear Experiment Chromosphere Solar and Stellar Astrophysics (astro-ph.SR) plasma energy: magnetic Physics High Energy Astrophysical Phenomena (astro-ph.HE) Solar flare energy: kinetic Magnetic reconnection messenger observatory Homestake neutrino: detector charged particle: energy Astrophysics - Solar and Stellar Astrophysics 13. Climate action gamma ray: solar atmosphere Physics::Space Physics High Energy Physics::Experiment Neutrino [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - High Energy Astrophysical Phenomena Homestake experiment |
| Zdroj: | PoS 36th International Cosmic Ray Conference 36th International Cosmic Ray Conference, Jul 2019, Madison, United States. pp.1075, ⟨10.22323/1.358.1075⟩ |
| Popis: | In response to a reported increase in the total neutrino flux in the Homestake experiment in coincidence with solar flares at the end of the eighties, solar neutrino detectors have searched for solar flare signals. Solar flares convert magnetic energy into thermal energy of plasma and kinetic energy of charged particles such as protons. As a consequence of magnetic reconnection, protons are injected downwards from the coronal acceleration region and can interact with dense plasma in the lower solar atmosphere, producing mesons that will subsequently decay into gamma rays and neutrinos at O(MeV-GeV) energies. The main motivation to search for solar flare neutrinos comes from their hadronic origin. As inherent products of high-energy proton collisions with the chromosphere, they are a direct probe of the proton accelerated towards the chromosphere. Using a multi-messenger approach, it is therefore possible to constrain the proton acceleration taking place in the solar flares, including the spectral index of the accelerated flux and its shape. We present the results of the first search for GeV neutrinos emitted during solar flares carried out with the IceCube Neutrino Observatory. We present a new approach which allows us to strongly lower the energy threshold of IceCube, originally designed to detect 10 GeV - PeV neutrinos. We compare the results with theoretical estimates of the corresponding flux. Presented at the 36th International Cosmic Ray Conference (ICRC 2019). See arXiv:1907.11699 for all IceCube contributions |
| Databáze: | OpenAIRE |
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