Impact of a High Velocity Cloud with the Galactic Disk
- Density and Column Density
Kudoh & Basu (2004, A&A, 423, 183)
These movies show the density (left) and the integrated column density (right) for a numerical simulation of an axisymmetric collision of an initially spherical cloud with the stratified Galactic disk.
Note the distinct mushroom shaped structure which develops after the collision. It resembles the mushroom cloud observed by the Canadian Galactic Plane Survey (English et al. 2000, ApJ, 533, L25). An image of the observed cloud is below, upside down because it is actually below the Galactic plane.