PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Neutrino. NU-astrophysical neutrinos
Search for GeV neutrinos associated with solar flares with IceCube
G. De Wasseige* on behalf of the IceCube Collaboration
*corresponding author
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Since the end of the eighties and in response to a reported increase in the total neutrino flux in the
Homestake experiment in coincidence with solar flares, solar neutrino detectors have searched for
solar flare signals. Hadronic acceleration in the magnetic structures of such flares leads to meson
production in the solar atmosphere. These mesons subsequently decay, resulting in gamma-rays
and neutrinos of O(MeV-GeV) energies. The study of such neutrinos, combined with existing
gamma-ray observations, would provide a novel window to the underlying physics of the
acceleration process. The IceCube Neutrino Observatory may be sensitive to solar flare neutrinos
and therefore provides a possibility to measure the signal or establish more stringent upper limits
on the solar flare neutrino flux. We present an original search dedicated to low energy neutrinos
coming from transient events. Combining a time profile analysis and an optimized selection of
solar flare events, this research represents a new approach allowing to strongly lower the energy
threshold of IceCube, which is initially foreseen to detect TeV neutrinos.
DOI: https://doi.org/10.22323/1.301.1010
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