Thanatology in protoplanetary discs The combined influence of Ohmic, Hall, and ambipolar diffusion on dead zones

• Published in: Astronomy and astrophysics (Berlin) Vol. 566; pp. A56 - np
• Main Authors: Lesur, Geoffroy, Kunz, Matthew W., Fromang, Sébastien
• Format: Journal Article
• Language: English
• Published: EDP Sciences 01.06.2014
• Subjects: Accretion disks; Ambipolar diffusion; Astrophysics; Discs; Disks; Hall effect; Magnetohydrodynamics; MHD; Ohmic dissipation; Physics; accretion; stars: formation; protoplanetary disks; magnetohydrodynamics (MHD); instabilities; accretion disks

Protoplanetary discs are poorly ionised due to their low temperatures and high column densities and are therefore subject to three "non-ideal" magnetohydrodynamic (MHD) effects: Ohmic dissipation, ambipolar diffusion, and the Hall effect. The existence of magnetically driven turbulence in...