Results 251 to 260 of about 8,624 (295)

Sunspots and Cycles

The Review of Economic Studies, 1986
Because sunspot equilibria seem to be of central importance for an understanding of rational expectations, we seek here to characterize completely a limited class of sunspot equilibria (stationary ones with two possible natural events) in the simplest overlapping generations model of production.
Azariadis, Costas, Guesnerie, Roger
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Origin of Sunspots

Nature, 1950
ALTHOUGH astronomers have commonly believed that sunspots are deep-seated vortices, the chief characteristics of a spot (an intense magnetic field and a cool umbra) have never been successfully explained.
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Synchronization of Sunspot Numbers and Sunspot Areas

Solar Physics, 2009
Sunspot activity is usually described by either sunspot numbers or sunspot areas. The smoothed monthly mean sunspot numbers (SNs) and the smoothed monthly mean areas (SAs) in the time interval from November 1874 to September 2007 are used to analyze their phase synchronization.
K. J. Li, P. X. Gao, L. S. Zhan
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The sunspot areas and the relative sunspot numbers

Geofisica pura e applicata, 1960
Within each sunspot cycle the yearly means (A) of the daily sunspot areas increase faster than the corresponding sunspot numbers (R) from the minimum to the maximum of solar activity and then decrease also faster than these numbers till the next minimum.
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Sunspots Rotation Rate and Sunspot Cycle

2005
International ...
Mouradian, Zadig, Heristchi, Djamshid
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Sunspots

Computer Music Journal, 1982
Liz Phillips, David Ahlstrom
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SUNSPOT ZONES

Science, 1907
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Hemispheric asymmetry of long-term sunspot activity: sunspot relative numbers for 1939–2019

Monthly Notices of the Royal Astronomical Society, 2022
L H Deng
exaly  

Book Review: The Controversy on Sunspots: On Sunspots

Journal for the History of Astronomy, 2012
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Periodicity of sunspot activity in the modern solar cycles

Science Bulletin, 2013
K J Li
exaly