Occurring between two or more points within a galaxy.2006 John C. Hodge, "Scalar potential model of redshift and discrete redshift" arXiv
The morphology-radius and the intragalactic medium cluster observations support the movement of matter from Source galaxies to Sink galaxies.
2011 Tilmann Piffl, Mary Williams, Matthias Steinmetz, "Kinematics in galactic tidal tails - A source for Hypervelocity stars?" arXiv
Generally tidal collisions of satellite galaxy produce stars which escape into the intragalactic space even if the satellite itself is on a bound orbit.
