Search results for "galaxies jets"

showing 1 items of 1 documents

Stability analysis of relativistic jets from collapsars and its implications on the short-term variability of gamma-ray bursts

2002

We consider the transverse structure and stability properties of relativistic jets formed in the course of the collapse of a massive progenitor. Our numerical simulations show the presence of a strong shear in the bulk velocity of such jets. This shear can be responsible for a very rapid shear--driven instability that arises for any velocity profile. This conclusion has been confirmed both by numerical simulations and theoretical analysis. The instability leads to rapid fluctuations of the main hydrodynamical parameters (density, pressure, Lorentz factor, etc.). However, the perturbations of the density are effectively decoupled from those of the pressure because the beam of the jet is radi…

Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesgalaxies jetsAstrophysicsAstrophysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICAInstabilitysymbols.namesakeAstrophysical jetISM jets and outflowsPhysicsBurstsGamma ray theoryTurbulenceAstrophysics (astro-ph)Magnetohydradynamics (MHD) : Gamma rays ; Bursts ; Gamma ray theory ; ISM jets and outflows ; galaxies jetsAstronomy and AstrophysicsMechanicsLight curve:ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia [UNESCO]Transverse planeLorentz factorSpace and Planetary SciencesymbolsGamma rays [Magnetohydradynamics (MHD)]OutflowUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogoniaGamma-ray burst:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
researchProduct