37 citations · 163 across the 12 of their papers we have counts for
7 papers · 1 filter
The effect of a stellar magnetic variation on the jet velocity
Fabio De Colle, Jose Gracia, Gareth Murphy
Stellar jets are normally constituted by chains of knots with some periodicity in their spatial distribution, corresponding to a variability of order of several years in the ejecti…
Resistive jet simulations extending radially self-similar magnetohydrodynamic models
Miljenko Cemeljic, Jose Gracia, Nektarios Vlahakis +1
Numerical simulations with self-similar initial and boundary conditions provide a link between theoretical and numerical investigations of jet dynamics. We perform axisymmetric res…
MHD models and synthetic synchrotron maps for the jet of M87
J. Gracia, S. Bogovalov, K. Tsinganos
We present a self-consistent MHD model for the jet of M87. The model consist of two distinct zones: an inner relativistic outflow, which we identify with the observed jet, and an o…
Magnetic collimation of the relativistic jet in M87
J. Gracia, K. Tsinganos, S. V. Bogovalov
We apply a two-zone MHD model to the jet of M87. The model consists of an inner relativistic outflow, which is surrounded by a non-relativistic outer disk-wind. The outer disk-wind…
Jet simulations extending radially self-similar MHD models
J. Gracia, N. Vlahakis, K. Tsinganos
We perform a numerical simulation of magnetohydrodynamic radially self-similar jets, whose prototype is the Blandford & Payne analytical example. The reached final steady state is…
Effects of a solid surface on jet formation around neutron stars
Matthias Stute, Jose Gracia, Max Camenzind
We present two numerical simulations of an accretion flow from a rotating torus onto a compact object with and without a solid surface -- representing a neutron star and a black ho…