Did the sun change its behaviour during the decline of Cycle 23 and into Cycle 24?

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DOIResolve DOI: http://doi.org/10.1007/s11207-011-9827-1
AuthorSearch for: ; Search for:
TypeArticle
Journal titleSolar Physics
Volume272
Issue2
Pages337350; # of pages: 14
Subject10.7-cm solar radio flux; Sunspot number; Activity indices
AbstractThe activity minimum between the end of cycle 23 and the beginning of cycle 24 was the longest and deepest since at least the beginning of the 20th century. This has led to speculation that the Sun is changing its behaviour. The sunspot number and 10.7-cm solar radio flux indices have traditionally been highly correlated, so a change in the relationship between them might flag at such a change. An examination of this relationship suggests a significant change in the relationship between activity in the photosphere and in the chromosphere/corona happened soon after the maximum of cycle 23 and has continued into cycle 24. However, there are indications of change as early as 1980.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Herzberg Institute of Astrophysics; NRC Institute for Information Technology
Peer reviewedYes
NPARC number19762623
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Record identifier4cd6d361-eedb-4fd4-936e-3c3492b1001b
Record created2012-04-02
Record modified2016-07-13
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