The temporal variations of solar rotation in the photosphere, chromosphere, and corona
have been widely investigated, whereas the rotation of the solar transition region is rarely …

Abstract Information on the rotation rate of the corona, and its variation over latitude and
solar cycle, is valuable for making global connections between the corona and the Sun, for …

Solar-cycle-related variation of the solar chromospheric rotation is studied by analyzing the
chromospheric rotation rate of 938 synoptic maps generated from the Ca ii K line at the …

Synoptic maps of Ca II K-normalized intensity at±40° latitude belt from Carrington rotations
827 (1915 August 10) to 1764 (1985 July 7) are utilized to investigate the long-term variation …

The solar chromosphere was daily observed in the Ca ii K line at the Mount Wilson
Observatory from 1915 August to 1985 July. A digitized data base was created, which …

The evolution of solar activity comprises, apart from the well-known 11-year cycle, various
temporal scales ranging from months up to the secondary cycles known as mid-term …

Analyses of solar rotation and activity, and their variations, can improve the understanding of
the formation and interaction of the solar-activity bands and therefore give important …

This paper examines long-term (more than four solar cycles) temporal and spatial
fluctuations in the solar rotation by investigating radio-emission escapes from various layers …

The solar filaments obtained from the daily Ca ii K3 observations at the Coimbra
Astronomical Observatory, which is now called the Geophysical and Astronomical …

Daily solar spectral irradiances (SSIs) at the spectral intervals 1–40, 116–264 and 950–
1600 nm and four categories of solar small-scale magnetic elements (MF no, MF anti, MF …