Rayleigh-taylor and richtmyer-meshkov instabilities in relativistic hydrodynamic jets

Jin Matsumoto, Youhei Masada

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)


We investigate the stability of relativistic jets using three-dimensional hydrodynamic simulations. The propagation of relativistic flow that is continuously injected from the boundary of computational domain into a uniform ambient medium is solved. An intriguing finding in our study is that Rayleigh-Taylor and Richtmyer-Meshkov type instabilities grow at the interface between the jet and surrounding medium as a result of spontaneously induced radial oscillating motion. It is powered by in situ energy conversion between the thermal and bulk kinetic energies of the jet. From complementary two-dimensional simulations of transverse structure of the jet, we find the effective inertia ratio of the jet to the surrounding medium determines a threshold for the onset of instabilities. The mixing between light faster jet and slow heavier external matters due to these instabilities causes the deceleration of the jet.

Original languageEnglish
Article number02005
JournalEPJ Web of Conferences
Publication statusPublished - 2013
Externally publishedYes
EventInternational Symposium on the Innermost Regions of Relativistic Jets and Their Magnetic Fields - Granada, Spain
Duration: 2013 Jun 102013 Jun 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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