Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/8188
Title: Variation of Small Scale Magnetic Fields Over a Century using Ca-K Images as Proxy
Authors: Singh, J
Priyal, M
Ravindra, B
Bertello, Luca
Pevtsov, Alexei
Keywords: Activity
Sun: chromosphere
(Sun:) sunspots
Issue Date: Apr-2023
Citation: Research in Astronomy and Astrophysics, Vol. 23, No. 4, 045016
Abstract: A combined uniform and long-time series of Ca-K images from the Kodaikanal Observatory, Mount Wilson Observatory and Mauna Loa Solar Observatory was used to identify and study the Ca-K small-scale features and their solar cycle variations over a century. The small scale features are classified into three distinct categories: enhanced network, active network and quiet network. All these features show that their areas vary according to the 11 yr solar cycle. The relative amplitude of the Ca-K network variations agrees with that of the sunspot cycle. The total area of these small-scale features varies from about 5% during the minimum phase of the solar cycle to about 20% during its maximum phase.
Description: Restricted Access
URI: http://hdl.handle.net/2248/8188
ISSN: 2397-6209
Appears in Collections:IIAP Publications

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