Magnetic Field Advection in Weakly Magnetised Viscous Resistive Accretion Disks: Numerical Simulations

Gareth C. Murphy, Claudio Zanni, Jonathan Ferreira

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

Abstract

Observations of jets from accretion disks have constrained the launching radius to be confined to a zone close to the centre of the disk. The time evolution of a viscous, resistive accretion disk with a radially varying magnetisation distribution is studied. The magnetic field is advected into the centre of the disk over two accretion timescales. The magnetic field distribution evolves towards a power law. The field lines bend sharply near the disk surface. A super-fast magnetosonic wind is launched from the innermost region of the disk due to numerical effects.
Original languageEnglish
Title of host publicationProtostellar Jets in Context
EditorsKanaris Tsinganos, Tom Ray, Matthias Stute
PublisherSpringer
Publication date2009
Pages117-122
ISBN (Print)978-3-642-00575-6
ISBN (Electronic)978-3-642-00576-3
DOIs
Publication statusPublished - 2009
Externally publishedYes
SeriesAstrophysics and Space Science Proceedings
ISSN1570-6591

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