Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ap%26ss..38..157p&link_type=abstract
Astrophysics and Space Science, vol. 38, Nov. 1975, p. 157-166.
Astronomy and Astrophysics
Astrophysics
15
Convective Flow, Dynamo Theory, Magnetohydrodynamic Flow, Solar Magnetic Field, Turbulent Diffusion, Magnetic Flux, Photosphere, Solar Granulation, Steady State
Scientific paper
Recent developments in solar dynamo and other theories of magnetic fields and convection are discussed and extended. A basic requirement of these theories, that surplus fields are eliminated by turbulent or eddy diffusion, is shown to be invalid. A second basic requirement, that strong surface fields are created by granule or supergranule motions, is shown to be improbable. Parker's (1973) 'thin-filament' dynamo, based on the Petschek mechanism, is shown to provide the alternative possibilities: either the magnetic fields halt all convection or a steady state is reached in which the fields are a tangle of long, thin filaments. From the above and other considerations, it is concluded that the dynamo and related diffuse-field theories are unacceptable, that solar magnetic fields are not dominated by convection, and that all the fields emerged from a permanent primordial field as strong concentrated fields (flux ropes) which were wound and twisted. The discussion may provide the physical elements of a deductive theory of hydromagnetic convection.
No associations
LandOfFree
Solar magnetic fields and convection. III - Recent developments in dynamo and related theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Solar magnetic fields and convection. III - Recent developments in dynamo and related theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar magnetic fields and convection. III - Recent developments in dynamo and related theories will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1376308