English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

This is a draft chapter for a book, entitled Physical Processes inCircumstellar Disks around Young Stars, which is scheduled for publication bythe University of Chicago Press as one of its Theoretical Astrophysics Seriesvolumes. Sect. 1 presents the motivation for considering the effects of alarge-scale, ordered magnetic field on the formation and evolution ofprotostellar disks. Sect. 2 outlines the physical principles that underlie themagnetohydrodynamics of disks that are threaded by such a field. Sect. 3discusses the formation and early evolution of disks that result from thecollapse of a rotating molecular cloud core that is coupled to theinsterstellar magnetic field. Sect. 4 reviews the observational evidence forthe disk--wind connection and describes the structure of magneticallyaccelerated disk outflows, focusing on centrifugally driven winds; it then goeson to discuss the equilibrium and stability properties of weakly ionizedprotostellar accretion disks in which the transport of angular momentum isdominated by a wind of this type. Sect. 5 considers the coupling between thecentral protostar and the surrounding disk through the protostellar magneticfield, covering, in turn, the phenomenology, basic concepts, and results ofnumerical simulations. The chapter is summarized in Sect. 6, which alsocontains a discussion of future research directions.

The Effects of Large-Scale Magnetic Fields on Disk Formation and Evolution