  Very recently, HAWC observatory discovered the high-energy gamma ray emission
from the solar disk during the quiescent stage of the Sun, extending the
Fermi-LAT detection of intense, hard emission between 0.1 - 200 GeV to TeV
energies. The flux of these observed gamma-rays is significantly higher than
that theoretically expected from hadronic interactions of galactic cosmic rays
with the solar atmosphere. More importantly, spectral slope of Fermi and HAWC
observed gamma ray energy spectra differ significantly from that of galactic
cosmic rays casting doubt on the prevailing galactic cosmic ray ancestry model
of solar disk gamma rays. In this work, we argue that the quiet Sun can
accelerate cosmic rays to TeV energies with an appropriate flux level in the
solar chromosphere, as the solar chromosphere in its quiet state probably
possesses the required characteristics to accelerate cosmic rays to TeV
energies. Consequently, the mystery of the origin of observed gamma rays from
the solar disk can be resolved consistently through the hadronic interaction of
these cosmic rays with solar matter above the photosphere in a quiet state. The
upcoming IceCube-Gen2 detector should be able to validate the proposed model in
future through observation of TeV muon neutrino flux from the solar disk. The
proposed idea should have major implications on the origin of galactic cosmic
rays.
