Modern view of the warm ionized medium

Abstract

We review the observational evidence that the warm ionized medium (WIM) is a major and physically distinct component of the Galactic interstellar medium. Although up to ~20% of the faint, high-latitude H-alpha emission in the Milky Way may be scattered light emitted in midplane H II regions, recent scattered light models do not effectively challenge the well-established properties of the WIM.

To appear in the proceedings of IAU Special Session 12: Modern Views of the Interstellar Medium. Two pages, no figures

References in corpus (2)

• On the origins of the diffuse H-alpha emission: Ionized gas or dust-scattered H-alpha halos?
• Ionized Gas in the First 10 Kiloparsecs of the Interstellar Galactic Halo: Metal Ion Fractions

Cited by in corpus (3)

• A nearby repeating fast radio burst in the direction of M81
• Heating of the Warm Ionized Medium by Low-Energy Cosmic Rays
• Multiwavelength analysis of the X-ray spur and southeast of the Large Magellanic Cloud