Fast motions of galaxies in the Coma I cloud: a case of Dark Attractor?
  We notice that nearby galaxies having high negative peculiar velocities are
distributed over the sky very inhomogeneously. A part of this anisotropy is
caused by the "Local Velocity Anomaly", i.e. by the bulk motion of nearby
galaxies away from the Local Void. But a half of the fast-flying objects reside
within a small region RA = [11.5h, 13.0h], Dec. = [+20\circ, +40\circ], known
as the Coma I cloud. According to Makarov & Karachentsev (2011), this complex
contains 8 groups, 5 triplets, 10 pairs and 83 single galaxies with the total
mass of 4.7\star10^13M\odot. We use 122 galaxies in the Coma I region with
known distances and radial velocities VLG < 3000 km/s to draw the Hubble
relation for them. The Hubble diagram shows a Z-shape effect of infall with an
amplitude of +200 km/s on the nearby side and -700 km/s on the back side. This
phenomena can be understood as the galaxy infall towards a dark attractor with
the mass of \sim 2\star10^14M\odot situated at a distance of 15 Mpc from us.
The existence of large void between the Coma and Virgo clusters affects
probably the Hubble flow around the Coma I also.
