Interstellar shock studies: the SOFIA/GREAT contribution

LERMA, Observatoire de Paris, PSL Research University, CNRS, UMR 8112, 75014 Paris, France ; Sorbonne Universités, UPMC Univ. Paris 6, UMR 8112, LERMA, 75005 Paris, France

Abstract

Shocks are ubiquitous in the interstellar medium of galaxies, where they contribute to the energetic balance and to the cycle of matter, and where they are thought to be the primary sites for cosmic rays acceleration. Most of the time: in jets and outflows, supernova remnants, or colliding flows, they are linked with star formation. The study of shocks is hence a powerful tool to probe the evolution of the interstellar medium and to better understand star formation. To these aims, the most precise observations must be compared with the most precise models of shocks. The SOFIA/GREAT instrument represents a powerful observational tool to support our progresses, as it allows to observe numerous shock tracers in the far-infrared range.