VVV Survey Microlensing: the Galactic Longitude Dependence
  We completed the search for microlensing events in the zero latitude area of
the Galactic bulge using the VVV Survey near-IR data obtained between 2010 and
2015. We have now a total sample of N = 630 events Using the near-IR
Color-Magnitude Diagram we selected the Red Clump sources to analyze the
longitude dependence of microlensing across the central region of the Galactic
plane. The events show a homogeneous distribution, smoothly increasing in
numbers towards the Galactic centre, as predicted by different models. We find
a slight asymmetry, with a larger number of events toward negative longitudes
than positive longitudes. This asymmetry is seen both in the complete sample
and the subsample of red clump giant sources, and it is possibly related with
the inclination of the bar along the line of sight. The timescale distribution
is fairly symmetric with a peak in 17.4 $\pm$ 1.0 days for the complete sample
(N = 630 events), and 20.7 $\pm$ 1.0 days for the Red Clump stars (N = 291
events), in agreement with previous results.
