The course “Physics of the Interstellar Medium” covers the basic physical processes that regulate the state of diffuse gas in, around and between galaxies. Therefore, we will extend our attention also the intergalactic medium, since this is a very vital research area in modern astrophysics. Topics c…

Evidence for the IGM The space between field galaxies is also

The ISM systems in Orion The Giant Molecular Cloud in Orion. The

IGM absorption lines Ionized medium up to z=5 Considering that is

Introduction: the ICM The space among galaxies is not as empty. Astrophysical

The diffuse "warm ionized medium" The diffuse "warm ionized medium" (WIM):

First evidence for dust extinction Trumpler (1930) demonstrated the existence of

History of observations of dark clouds "Here is truly a hole

Introduction The dominant component in the ISM is hydrogen. Atomic hydrogen (HI)

Magnetic fields in the Orion Molecular Cloud Introduction In the last lecture

Introduction Topic of this lecture: equilibrium configuration in the ISM systems. Thermodynamical

Five components of the gaseous ISM In this lecture we will

A census of systems in the ISM We continue our survey

What is the ISM What is the ISM made of: a

Preface What is the interstellar medium? The term "interstellar medium" (ISM) refers