Magnetic Braking During Star Formation, I

Details Magnetic Braking During Star Formation, I Magnetic Braking During Star Formation, I

Mar 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ap%26ss..27..167g&link_type=abstract

Astrophysics and Space Science, Volume 27, Issue 1, pp.167-194

Astronomy and Astrophysics

Astrophysics

42

Scientific paper

We study the transport of angular momentum from a cool massive gas cloud by Alfvén waves travelling along the distorted magnetic field linking the cloud with the hot galactic background. The efficiency of braking is never so great as to keep the cloud even roughly corotating with the back-ground. The mathematical approximations are not quite sharp enough to give a definitive answer to the question: is the braking ever so efficient that the centrifugal forces are kept well below gravity, so that the cloud contracts at the (magnetically-diluted) free-fall rate?; or is the cloud maintained in approximate centrifugal balance, with the rate of contractiondetermined by the loss of angular momentum?

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