Jellyfish galaxies
Ram pressure stripping, a process whereby the hot, pressurized intracluster medium (ICM) removes the interstellar medium (ISM) from a galaxy, plays a crucial role in regulating galaxy evolution within galaxy clusters. The jellyfish" galaxies exhibit long tails of ionized plasma, a consequence of the displaced ISM trailing behind the galaxy's stellar disc for tens of kpc. These tails provide a unique window into a multitude of astrophysical phenomena, including star formation under extreme conditions and the complex interplay between hot and cold plasmas.
[Image caption: Multi-wavelength view of the jellyfish galaxy JW100 .]