Searching for neutrinos from solar flares across solar cycles 23 and 24 with the Super-Kamiokande detector
Solar flare
Flare
Corona (planetary geology)
Solar neutrino problem
Solar energetic particles
DOI:
10.48550/arxiv.2210.12948
Publication Date:
2022-01-01
AUTHORS (245)
ABSTRACT
Neutrinos associated with solar flares (solar-flare neutrinos) provide information on particle acceleration mechanisms during the impulsive phase of flares. We searched using Super-Kamiokande detector for neutrinos from that occurred cycles $23$ and $24$, including largest flare (X28.0) November 4th, 2003. In order to minimize background rate we neutrino interactions within narrow time windows coincident $\gamma$-rays soft X-rays recorded by satellites. addition, performed first attempt search solar-flare invisible side Sun emission coronal mass ejections (CMEs). By selecting twenty powerful above X5.0 visible eight CMEs whose speed exceeds $2000$ $\mathrm{km \, s^{-1}}$ 1996 2018, found two (six) events occurring (invisible) Sun, a typical $0.10$ ($0.62$) per in MeV-GeV energy range. No significant signal estimated was observed. As result set following upper limit fluence at Earth $\mathit{\Phi}<1.1\times10^{6}$ $\mathrm{cm^{-2}}$ $90\%$ confidence level flare. The resulting limits allow us constrain some theoretical models emission.
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