Published in Rev. Mod. Phys. 81:969, 2009
For a PDF version of the article, click here.
astro-ph/0901.0941
R.-J. Dettmar
Astronomisches Institut,
Ruhr-University
Bochum, Germany
J. E. Beckman
Instituto de Astrofísica de
Canarias, Tenerife, Spain and Consejo
Superior de Investigaciones Científicas, Madrid, Spain
K. Wood
University of
St. Andrews, St. Andrews, Scotland
J. D. Slavin
Harvard-Smithsonian
Center for Astrophysics, Cambridge, Massachusetts 02138, USA
C. Giammanco
Instituto de Astrofísica de
Canarias, Tenerife, Spain
G. J. Madsen
School of
Physics,
The University of
Sydney, Sydney, NSW 2006, Australia
A. Zurita
Departamento de
Física Teórica y del Cosmos,
Universidade de Granada,
Granada, Spain
R. J. Reynolds
Department of
Astronomy,
University of
Wisconsin-Madison, Madison, Wisconsin 53706, USA
Abstract. This article reviews observations and models of the diffuse ionized gas that permeates the disk and halo of our Galaxy and others. It was inspired by a series of invited talks presented during an afternoon scientific session of the 65th birthday celebration for Professor Carl Heiles held at Arecibo Observatory in August 2004. This review is in recognition of Carl's long standing interest in and advocacy for studies of the ionized as well as the neutral components of the interstellar medium.
Table of Contents