Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Casse F"'
Autor:
Casse, F., Varniere, P.
We have performed general relativistic hydrodynamics (GRHD) simulations of 2D discs orbiting around spinning black holes and prone to the Rossby Wave Instability (RWI). We show that the RWI can develop at any location in the disc and for any spin par
Externí odkaz:
http://arxiv.org/abs/1809.02080
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 pseudo-Newtonian approach. Here we present the first general relativistic h
Externí odkaz:
http://arxiv.org/abs/1610.00887
Autor:
Mellah, I. El, Casse, F.
Classical Supergiant X-ray Binaries host a neutron star orbiting a supergiant OB star and display persistent X-ray luminosities of 10$^{35}$ to 10$^{37}$ erg/s. The stellar wind from the massive companion is believed to be the main source of matter a
Externí odkaz:
http://arxiv.org/abs/1609.01532
Autor:
Vincent, F. H., Paumard, T., Perrin, G., Varniere, P., Casse, F., Eisenhauer, F., Gillessen, S., Armitage, P. J.
The black hole at the Galactic centre exhibits regularly flares of radiation, the origin of which is still not understood. In this article, we study the ability of the near-future GRAVITY infrared instrument to constrain the nature of these events. W
Externí odkaz:
http://arxiv.org/abs/1404.6149
We present in this paper both a linear study and numerical relativistic MHD simulations of the non-resonant streaming instability occurring in the precursor of relativistic shocks. In the shock front restframe, we perform a linear analysis of this in
Externí odkaz:
http://arxiv.org/abs/1305.0847
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 intermediate size solids toward the central star may prevent their growth to
Externí odkaz:
http://arxiv.org/abs/1204.4390
Molecular counterparts to atomic jets have been detected within 1000 AU of young stars. Reproducing them is a challenge for proposed ejection models. We explore whether molecules may survive in an MHD disk wind invoked to reproduce the kinematics and
Externí odkaz:
http://arxiv.org/abs/1112.3248
Context. The formation of vortices in accretion disks is of high interest in various astrophysical contexts, in particular for planet formation or in the disks of compact objects. But despite numerous attempts it has thus far not been possible to pro
Externí odkaz:
http://arxiv.org/abs/1004.0302
Autor:
Marcowith, A., Casse, F.
The present article investigates magnetic amplification in the upstream medium of SNR blast wave through both resonant and non-resonant regimes of the streaming instability. It aims at a better understanding of the diffusive shock acceleration (DSA)
Externí odkaz:
http://arxiv.org/abs/1001.2111
Extragalactic jets are inferred to harbor dynamically important, organized magnetic fields which presumably aid in the collimation of the relativistic jet flows. We here explore by means of grid-adaptive, high resolution numerical simulations the mor
Externí odkaz:
http://arxiv.org/abs/0802.2034