The time-dependent Rayleigh–Taylor instability in interstellar shells and supershells, including the eROSITA bubbles

• Published in: Monthly notices of the Royal Astronomical Society Vol. 509; no. 1; pp. 716 - 737
• Main Authors: Schulreich, Michael M, Breitschwerdt, Dieter
• Format: Journal Article
• Language: English
• Published: Oxford University Press 01.01.2022
• Subjects: methods: analytical; hydrodynamics; turbulence; methods: numerical; instabilities; ISM: bubbles

ABSTRACT The Rayleigh–Taylor (RT) instability is omnipresent in the physics of inversely density-stratified fluids subject to effective gravitational acceleration. In astrophysics, a steep stratification of the ambient medium can fragment a bubble shell faster due to a strongly time-dependent RT ins...