intergalactic medium
(IGM)
(matter between galaxies)
The intergalactic medium (IGM) is matter such as dust
and gas between galaxies. Similar matter between stars within
a galaxy is called the interstellar medium (ISM). The term IGM is often used
for the medium between galaxies within a galaxy cluster, but
the term intracluster medium (ICM) more specifically refers to that. IGM is often
plasma in filaments, mostly ionized hydrogen. Some of it is
hot, up to 105 to 107 K, and is termed the
warm-hot intergalactic medium (WHIM) and observed in ultraviolet
and low-energy X-ray radiation.
(galaxies,gas,dust)
Further reading:
https://en.wikipedia.org/wiki/Intergalactic_medium
https://astronomy.swin.edu.au/cosmos/i/Intergalactic+Medium
https://www.britannica.com/science/intergalactic-medium
Referenced by pages:
2175 angstrom feature
Cloudy
cold gas
dispersion measure (DM)
epoch of reionization (EOR)
fast radio burst (FRB)
filament
foreground subtraction
galaxy cluster (CL)
Gunn-Peterson trough
interplanetary medium (IPM)
interstellar astrophysics
interstellar medium (ISM)
intracluster medium (ICM)
Lyman-alpha forest
mass density
missing baryon problem
Perseus Cluster (Abell 426)
plasma
plasma astrophysics
proximity effect
radio galaxy (RG)
ram pressure
star formation (SF)
star formation feedback
X-ray source
Index