  Isolated black holes in our Galaxy have eluded detection so far. We present
here a comprehensive study on the detectability of isolated stellar-mass
astrophysical black holes that accrete interstellar gas from molecular clouds
in both the local region and the Central Molecular Zone. We adopt a
state-of-the-art model for the accretion physics backed up by numerical
simulations, and study the number of observable sources in both the radio and
X-ray band, as a function of a variety of parameters. We discuss in particular
the impact of the astrophysical uncertainties on our prediction for the number
of bright X-ray sources in the central region of the Galaxy. We finally
consider future developments in the radio domain, and assess the potential of
SKA to detect a population of astrophysical black holes accreting gas in our
Galaxy.
