Observing future Solar Flare Neutrino in Hyper-KamioKande in Japan, Korea and in IceCube

TL;DR

This paper explores the potential to observe solar flare neutrinos using Hyper-Kamiokande and IceCube detectors, analyzing expected signals from the largest solar flares based on recent data.

Contribution

It proposes a novel observational approach to detect solar flare neutrinos with upcoming and upgraded neutrino detectors, highlighting their potential for new solar physics insights.

Findings

Expected neutrino signal rates for recent large solar flares

Detection feasibility at Hyper-Kamiokande and IceCube

Energy spectrum differences between detectors

Abstract

The largest Solar flare have been recorded in gamma flash and hard spectra up to tens GeV energy. The present building and upgrade of Hyper-Kamiokande (HK) and IceCube (as well as Deep Core, PINGU) neutrino detectors do offer a novel way to largest trace of solar Flare: their sudden anti-neutrino (or neutrino) flare made by proton scattering and pion decays via Delta resonance production. These signals might be observable at largest flare by HK via soft spectra up to tens- hundred MeV energy and by IceCube-PINGU at higher, GeV up to hundred GeV, energies. We show the expected rate of signals for the most powerful solar flare occurred in recent decades.