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astro-ph.SR2014★ 1.4k cited
The Interface Region Imaging Spectrograph (IRIS)
B. De Pontieu, A. M. Title, J. Lemen +85
The Interface Region Imaging Spectrograph (IRIS) small explorer spacecraft provides simultaneous spectra and images of the photosphere, chromosphere, transition region, and corona…
astro-ph.SR2013★ 15 cited
Solar Cycle Variability and Surface Differential Rotation from Ca II K-Line Time Series Data
Jeffrey Scargle, Stephen Keil, Pete Worden
Analysis of over 36 years of time series data from the NSO/AFRL/Sac Peak K-line monitoring program elucidates five components of the variation of the seven measured chromospheric p…