139 citations · 233 across the 7 of their papers we have counts for
4 papers · 1 filter
Variation of small scale magnetic fields over a century using Ca-K images as proxy
Jagdev Singh, Muthu Priyal, B. Ravindra +2
A combined uniform and long-time series of Ca-K images from the Kodaikanal Observatory (KO), Mount Wilson Observatory (MWO), and Mauna Loa Solar Observatory (MLSO) were used to ide…
The Mount Wilson Observatory S-index of the Sun
Ricky Egeland, Willie Soon, Sallie Baliunas +3
The most commonly used index of stellar magnetic activity is the instrumental flux scale of singly-ionized calcium H & K line core emission, S, developed by the Mount Wilson Observ…
SOLIS: reconciling disk-integrated and disk-resolved spectra from the Sun
Alexei Pevtsov, Luca Bertello, Brian Harker +2
Unlike other stars, the surface of the Sun can be spatially resolved to a high degree of detail. But the Sun can also be observed as if it was a distant star. The availability of s…
Magnetic Twist and Writhe of Active Regions: On the Origin of Deformed Flux Tubes
M. López Fuentes, P. Démoulin, C. H. Mandrini +2
We study the long term evolution of a set of 22 bipolar active regions (ARs) in which the main photospheric polarities are seen to rotate one around the other during several solar…