XXth International Conference on Neutrino Physics and Astrophysics
D.Guetta
Neutrino Flux Predictions for Known Galactic Microquasars
It has been proposed recently that Galactic microquasars may be
prodigious emitters of TeV neutrinos that can be detected by upcoming
km^2 neutrino telescopes. In this paper we consider a sample of
identified microquasars and microquasar candiates, for which available
data enables rough determination of the jet parameters. By employing
the parameters inferred from radio observations of various jet
ejection events, we determine the neutrino fluxes that should have
been produced during these events by photopion production in the
jet. Despite the large uncertainties in our analysis, we demonstrate
that in several of the sources considered, the neutrino flux at Earth,
produced in events similar to those observed, would exceed the
detection threshold of a km^2 neutrino detector. The class of
microquasars may contain also sources with bulk Lorentz factors larger
than those characteristic of the sample considered here, directed
along our line of sight. Such sources, which may be very difficult to
resolve at radio wavelengths and hence may be difficult to identify as
microqusar candidates, may emit neutrinos with fluxes significantly
larger than typically obtained in the present analysis. These sources
may eventually be identified through their neutrino and gamma-ray
emission.
Based on
astro-ph/0202200
See also
Postscript Version of Poster.