BEXCO - Room D(108)
[NU014] Search for GeV neutrinos associated with solar flares with IceCube
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.