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. By stripping away the fuel for star formation, ram pressure can quench a galaxy's star formation in a relatively short timeframe. The most extreme examples of ram-pressure stripping, known as "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, the fate of cold clouds in a hostile environment, and the complex interplay between hot and cold plasmas. X-ray and radio continuum observations can probe these phenomena, revealing the relativistic plasma, large-scale magnetic fields, and hot plasma within the tails. In recent years, the GASP (GAs Stripping Phenomena in galaxies) collaboration has made significant strides in understanding jellyfish galaxies through a multi-wavelength survey of 114 galaxies spanning a redshift range from 0.04 to 0.07. This presentation will showcase recent findings from radio continuum and X-ray observations of jellyfish galaxies' tails. I will present the various scenarios that account for the observed emissions, and demonstrate how combined MUSE, LOFAR, and Chandra data can explore the interplay between the different ISM components and the ICM. Additionally, I will discuss the promising future of these studies and their potential implications for other fields of astrophysics.
Antonino Marasco