Publication
Title
Monopolar structure of the sun in between polar reversals and in Maunder Minimum
Author
Abstract
After a polar reversal in one hemisphere the Sun has two polar caps of the same sign, leaving it in a kind of monopolar state. It may take months before a polar reversal occurs in the other hemisphere. The situation may have been extreme in the Maunder Minimum where the northern hemisphere most probably did not have polar reversals during several cycles, while the southern hemisphere may have had some. This may affect the interplanetary field and thus the cosmic rays reaching the Earth. Using the relation between the Wolf number and the speed of the global magnetic field regions the yearly mean Wolf number has to exceed 40 in order to have polar reversals, hence per hemisphere we expect that it must exceed 20. This may be used to give a definition of a deep minimum. (c) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.
Language
English
Source (journal)
Advances in space research. - Paris
Publication
Paris : 2007
ISSN
0273-1177
Volume/pages
40:12(2007), p. 1917-1920
ISI
000253590300019
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 12.07.2012
Last edited 11.09.2017
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