Tiny-Scale Atomic Structure and the Cold Neutral Medium--Review and Recap
Abstract
Description
Almost a decade ago I wrote an article with the same title as this. It focused on the physical properties of the Tiny-Scale Atomic Structure (TSAS) as discrete structures of the Cold Neutral Medium (CNM). To be observable, tiny discrete structures that don't grossly violate pressure equilibrium need two attributes: low temperatures and geometrical anisotropy. Here I update that article. I discuss thermal and pressure equilibrium, ionization, optical lines, H_2 abundance, and evaporation.
Invited paper at the workshop, "Small Ionized and Neutral Structures in the Diffuse Interstellar Medium", eds. M. Haverkorn and W.M. Goss (ASP Conference Series)
Invited paper at the workshop, "Small Ionized and Neutral Structures in the Diffuse Interstellar Medium", eds. M. Haverkorn and W.M. Goss (ASP Conference Series)