GeV-TeV gamma-rays and neutrinos from the Nova V407 Cygni
  The Fermi-LAT telescope has unexpectedly discovered GeV gamma-ray emission
from the symbiotic Nova V407 Cygni. We investigate the radiation processes due
to electrons and hadrons accelerated during the explosion of this Nova. We
consider a scenario in which GeV gamma-ray emission observed by Fermi is
produced by the electrons with energies of a few tens of GeV in the inverse
Compton scattering of stellar radiation. On the other hand, the hadrons are
expected to reach larger energies, due to the lack of radiation losses during
acceleration process, producing TeV gamma-rays and neutrinos. We predict the
fluxes of very high energy gamma-rays and neutrinos from Novae of the V407 type
for two models of hadron acceleration and discuss their possible detectability
by the present and future telescopes (e.g. IceCube, CTA)
