ONERA is involved in the testing and development of new current-free electric thruster (helicon thruster or ECR thruster), using magnetized plasmas. For this development, a numerical tool is desirable to model the magnetized plasma, and assess the overall performances of the system. For this reason, a model for the plasma produced in the thruster has been developed. It boils down to a single-fl...

Cosmology, high-energy physics and astrophysics are converging on the study of large-scale magnetic fields. While the experimental evidence for the existence of large-scale magnetization in galaxies, clusters and superclusters is rather compelling, the origin of the phenomenon remains puzzling especially in light of the most recent observations. The purpose of the present review is to describe ...

An invited Perspective to mark the election of the author to the fellowship of the Royal Society in 2014. Explosive instability and erupting flux tubes in a magnetized plasma S. C. Cowley1,2, B. Cowley3, S. A. Henneberg4 and H. R. Wilson4 1CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, UK 2Department of Physics, Imperial College, Prince Consort Road, London SW7 2BZ, UK 3Department of Phy...

We present a numerical study of the dynamics of magnetized, relativistic, non-self-gravitating, axisymmetric tori orbiting in the background spacetimes of Schwarzschild and Kerr black holes. The initial models have a constant specific angular momentum and are built with a nonzero toroidal magnetic field component, for which equilibrium configurations have recently been obtained. In this work we...

We present two high-resolution local models for the crustal magnetic field of the Martian south polar region. Models SP130 and SP130M were derived from three-component measurements made by Mars Global Surveyor at nighttime and at low altitude (<200 km). The availability area for these data covers the annulus between latitudes −76∘ and −87∘ and contains a strongly magnetized region (southern par...

Context. We present a detailed study of localised magnetohydrodynamical (MHD) instabilities occuring in two– dimensional magnetized accretion disks. Aims. We model axisymmetric MHD disk tori, and solve the equations governing a two–dimensional magnetized accretion disk equilibrium and linear wave modes about this equilibrium. We show the existence of novel MHD instabilities in these two–dimensi...

[1] Magnetic fields measured by the satellite Lunar Prospector show large scale features resulting from remanently magnetized crust. Vector data synthesized at satellite altitude from a spherical harmonic model of the lunar crustal field, and the radial component of the magnetometer data, have been used to produce spatially continuous global magnetization models for the lunar crust. The magneti...