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Title:
Do changes in the photospheric magnetic network cause the 11 year variation of total solar irradiance?
Authors:
Foukal, P.; Harvey, K.; Hill, F.
Affiliation:
AA(Cambridge Research and Instrumentation, Inc., MA), AB(Solar Physics Research Corp., Tucson, AZ), AC(National Solar Observatory, Tucson, AZ)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 383, Dec. 20, 1991, p. L89-L92. (ApJL Homepage)
Publication Date:
12/1991
Category:
Solar Physics
Origin:
STI
NASA/STI Keywords:
Irradiance, Photosphere, Solar Magnetic Field, Sunspot Cycle, Analysis Of Variance, Astronomical Photometry, Radiant Flux Density
DOI:
10.1086/186249
Bibliographic Code:
1991ApJ...383L..89F

Abstract

Changes in the area of the photospheric magnetic network over the sunspot cycle have been put forward as the 'missing component' required to explain the 11-yr variation of total solar irradiance observed by space-borne radiometers. It is shown that this explanation is consistent with recent measurements of the photometric contrast of magnetic faculae and with the present measurement of the network area change during cycle 21.

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