Observations of Photospheric Dynamics and Magnetic Fields: From Large-Scale to Small-Scale Flows

Details Observations of Photospheric Dynamics and Magnetic Fields: From Large-Scale to Small-Scale Flows Observations of Photospheric Dynamics and Magnetic Fields: From Large-Scale to Small-Scale Flows

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ssrv..144..127m&link_type=abstract

Space Science Reviews, Volume 144, Issue 1-4, pp. 127-149

Physics

1

Sun, Magnetic Fields, Dynamics, Helioseismology, Meridional Flows

Scientific paper

This paper reviews solar flows and magnetic fields observed at the photospheric level. We first present the context in which these observations are performed. We describe the various temporal and spatial scales involved, and the coupling between them. Then we present small-scale flows, mainly supergranulation and flows around active regions. Flows at the global scale are then reviewed, again with emphasis on the flows, i.e. differential rotation, torsional oscillation and meridional circulation. In both small- and global-scale we discuss the coupling between flow fields and magnetic field and give an overview of observational techniques. Finally, the possible connection between studies of solar activity and stellar activity is briefly discussed.

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