On the Study of Solar Flares with Neutrino Observatories

TL;DR

This paper explores the potential of neutrino observatories, especially IceCube, to detect neutrinos from solar flares, introducing a new stacking analysis method to improve detection prospects.

Contribution

It presents a novel time profile analysis approach and initial strategies for neutrino detection from solar flares using IceCube data.

Findings

Proposed a stacking method for solar flare neutrino detection.

Assessed IceCube's sensitivity to solar flare neutrinos.

Outlined future improvements for detection efficiency.

Abstract

Since the end of the eighties, in response to a reported increase of the total neutrino flux in the Homestake experiment in coincidence with solar flares, neutrino detectors have searched for signals of neutrinos associated with solar flare activity. Protons which are accelerated by the magnetic structures of such flares may collide with the solar atmosphere, producing mesons which subsequently decay, resulting in neutrinos at O(MeV-GeV) energies. The study of such neutrinos would provide a new window on the underlying physics of the acceleration process. The sensitivity to solar flares of the IceCube Neutrino Observatory, located at the geographical South Pole, is currently under study. We introduce a new approach for a time profile analysis. This is based on a stacking method of selected solar flares which are likely to be connected with pion production. An initial approach towards a neutrino search using the current IceCube experiment as well as first efforts to improve the detection efficiency in the future are presented.