Results 231 to 240 of about 4,747 (288)

The Sunspot Solar Observatory Data Archive: Continuing Operations at the Dunn Solar Telescope. [PDF]

open access: yesSol Phys
Sellers SG   +11 more
europepmc   +1 more source

A Risk Prediction Tool for Invasive Melanoma.

open access: yesJAMA Dermatol
Whiteman DC   +5 more
europepmc   +1 more source

A sunspot paradox [PDF]

open access: possibleEconomics Letters, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

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
openaire   +2 more sources

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.
openaire   +2 more sources

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
openaire   +1 more source

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.
openaire   +1 more source

Home - About - Disclaimer - Privacy