98 citations · 337 across the 9 of their papers we have counts for
7 papers
Radiation-magnetohydrodynamics with MPI-AMRVAC using flux-limited diffusion
Nishant Narechania, Rony Keppens, Asif ud-Doula +2
Context. Radiation plays a significant role in solar and astrophysical environments as it may constitute a sizeable fraction of the energy density, momentum flux, and the total pre…
Suppression of photospheric velocity fluctuations in strongly magnetic O-stars in radiation-magnetohydrodynamic simulations
A. ud-Doula, J. O. Sundqvist, N. Narechania +3
O-stars generally show clear signs of strong line-broadening (in addition to rotational broadening) in their photospheric absorption lines (typically referred to as 'macroturbulenc…
Formation and long-term evolution of 3D vortices in protoplanetary discs
H. Meheut, R. Keppens, F. Casse +1
In the context of planet formation, anticyclonic vortices have recently received lots of attention for the role they can play in planetesimals formation. Radial migration of interm…
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…
Decelerating relativistic two-component jets
Z. Meliani, R. Keppens
Transverse stratification is a common intrinsic feature of astrophysical jets. There is growing evidence that jets in radio galaxies consist of a fast low density outflow at the je…
Faranoff-Riley type I jet deceleration at density discontinuities "Relativistic hydrodynamics with realistic equation of state"
Z. Meliani, R. Keppens, B. Giacomazzo
The deceleration mechanisms for relativistic jets in active galactic nuclei remain an open question, and in this paper we propose a model which could explain sudden jet deceleratio…