๐”– Bobbio Scriptorium
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Modelling coronal magnetic fields

โœ Scribed by D. P. Rowse; I. W. Roxburgh


Publisher
Springer
Year
1981
Tongue
English
Weight
160 KB
Volume
74
Category
Article
ISSN
0038-0938

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The observational evidence on the strength of the coronal magnetic field above active regions is reviewed. Recent advances in observations and plasma theory are used to determine which data are the more reliable and to revise some earlier estimates of field strength. The results from the different t

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A model of the large-scale magnetic field structure above the photosphere uses a Green's function solution to Maxwell's equations. Sources for the magnetic field are related to the observed photospheric field and to the field computed at a 'source' surface about 0.6 R G above the photosphere. The la

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Slow photospheric motions can produce flow speeds in the corona which are fast enough to violate quasi-static evolution. Therefore, high-speed flows observed in the corona are not necessarily due to a loss of equilibrium or stability. In this letter we present an example where the flow speed increas

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Coronal electric currents are superposed on the calculated large-scale current-flee (potential) magnetic field of the solar corona and the new magnetic configurations are mapped. The results indicate that relatively large coronal electric currents are required before significant topological deviatio