76 citations · 276 across the 8 of their papers we have counts for
8 papers
Impact of Schwarzschild black hole's gravity upon the Rossby wave instability
F. Casse, P. Varniere, Z. Meliani
In an early work the Rossby Wave Instability (RWI) has been proposed to explain variability thought to originate in the close vicinity of black-holes but this was done in the pseud…
Relativistic AGN jets I. The delicate interplay between jet structure, cocoon morphology and jet-head propagation
S. Walg, A. Achterberg, S. Markoff +2
Current observations have shown that astrophysical jets reveal strong signs of radial structure. They suggest that the inner region of the jet, the jet spine, consists of a low-den…
Nonradial and nonpolytropic astrophysical outflows IX. Modeling T Tauri jets with a low mass-accretion rate
C. Sauty, Z. Meliani, J. J. G. Lima +3
Context: A large sample of T Tauri stars exhibits optical jets, approximately half of which rotate slowly, only at ten per cent of their breakup velocity. The disk-locking mechanis…
Dynamics and stability of relativistic GRB blast waves
Z. Meliani, R. Keppens
In gamma-ray-bursts (GRB), ultra-relativistic blast waves are ejected into the circumburst medium. We analyse in unprecedented detail the deceleration of a self-similar Blandford-M…
Jet simulations and Gamma-ray burst afterglow jet breaks
H. J. van Eerten, Z. Meliani, R. A. M. J. Wijers +1
The conventional derivation of the gamma-ray burst afterglow jet break time uses only the blast wave fluid Lorentz factor and therefore leads to an achromatic break. We show that i…
Gamma-ray burst afterglows from trans-relativistic blast waves
H. J. van Eerten, K. Leventis, Z. Meliani +1
We present a study of the intermediate regime between ultra-relativistic and nonrelativistic flow for gamma-ray burst afterglows. The hydrodynamics of spherically symmetric blast w…