Open AccessDisc–wind field matching in accretion discs with magnetically influenced winds
Author(s) -
Campbell C. G.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2005.09110.x
Subject(s) - physics , angular momentum , accretion (finance) , advection , astrophysics , magnetic field , dynamo , magnetohydrodynamics , astronomy , mechanics , classical mechanics , quantum mechanics , thermodynamics
A solution is presented for the nearly force‐free magnetic field in the inner region of an accretion disc wind, well inside the Alfvén surface. This is matched to a dynamo‐generated disc field and the consequences for the disc and wind structures are investigated. The radial and vertical structures of the disc are found, together with the essential properties of the wind flow. Solutions result for which the wind angular momentum loss is at least comparable to the viscous radial advection of angular momentum.