Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-25T17:15:12.942Z Has data issue: false hasContentIssue false
  • English
  • Français

3D global MHD simulations of a proto-planetary disk: dead zone and large-scale magnetic fields

Published online by Cambridge University Press:  01 November 2008

Natalia Dzyurkevich ,
Mario Flock  and
Hubert Klahr
Natalia Dzyurkevich
Affiliation:
Max-Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
Mario Flock
Affiliation:
Max-Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
Hubert Klahr
Affiliation:
Max-Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present 3D global MHD simulations of proto-planetary disks calculated with the ZeusMP code. We focus on gas dynamics; the magnetic diffusivity and temperature are fixed during the simulation. A zone with low gas ionization at the midplane is included within ±2 scale heights. We mimic the ‘snow’-line radius with one order of magnitude jump in magnetic diffusivity η. Resulting turbulent Maxwell and Reynolds stresses are present at the midplane despite of low ionization. We find no radial inhomogeneities in turbulent α stress for a mild ionization contrast at the ‘snow’-line. A smooth azimuthal magnetic field is produced in the dead zone which may be a driving force for a weak accretion flow.

Keywords

MHD – turbulence – accretion disks – protoplanetary disks
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 117 - 118
Copyright
Copyright © International Astronomical Union 2009

References

Kretke, K. A. & Lin, D. N. C. 2007, ApJ 664, L55CrossRefGoogle Scholar
Brauer, F., Henning, Th., & Dullemond, C. P. 2008, A&A 487, L1Google Scholar
Beckwith, K., Hawley, J. F., & Krolik, J. H. 2008, ApJ 678, 1180CrossRefGoogle Scholar
Turner, N. J., Sano, T., & Dziourkevitch, N. 2007, ApJ 659, 729CrossRefGoogle Scholar
Turner, N. J. & Sano, T. 2008, ApJ 679, 131CrossRefGoogle Scholar