It's a process called ram pressure stripping because it strips that material out of the disk to form the tentacle shape.
The ram pressure stripping may be "causing gas to flow toward the center and triggering the activity," the scientists said in a (https://www.
The tentacles of jellyfish galaxies are produced in galaxy clusters by a process called ram pressure stripping.
This strong link between ram pressure stripping and active black holes was not predicted and has never been reported before, said team leader Bianca Poggianti from the INAF-Astronomical Observatory of Padova in Italy.
Theories of galaxy formation have proposed various possible mechanisms, such as: gas removal by powerful outflows or ram pressure stripping
, heating and photoionization of the interstellar medium, turbulent or gravitational quenching, halting of the gas supply inflow (often referred to as "strangulation").