Sunspot drawings made by Galileo Galilei in 1612 are used to derive the law of differential rotation at that time. The main interest of the work is during the...
The solar rotation rate at latitudes 0 deg, 15 deg and 30 deg has been inferred by averaging the results of 120 regions of 15 degx15 deg, which have been...
Solar Site Survey for the Advanced Technology Solar Telescope. I. Analysis of the Seeing Data
The site survey for the Advanced Technology Solar Telescope concluded recently after more than 2 years of data gathering and analysis. Six locations, including...
Solar Space Density of the Red Clump Stars and the Scale-Length of the Thin Disc
We estimated the scale-length of the thin disc with the J and W1 magnitudes of the most probable red clump stars in the Galactic plane, - 0°.5 ⩽ b ⩽ +0°.5, in...
Solar structure from global studies of the 5-minute oscillation
An overall view of the solar surface is presented with emphasis on the study of low 1 value oscillations. Line of sight velocity measurements of the whole solar...
Solar Surface and Atmospheric Dynamics. The Photosphere
Various aspects of the magnetism of the quiet sun are reviewed. The suggestion that a small scale dynamo acting at granular scales generates what we call the...
Solar surges related to UV bursts. Characterization through k-means, inversions, and density diagnostics
Context. Surges are cool and dense ejections typically observed in chromospheric lines and closely related to other solar phenomena such as UV bursts or coronal...
Solar-cycle and Latitude Variations in the Internetwork Magnetism
The importance of the quiet-Sun magnetism is that it is always there to a greater or lesser extent, being a constant provider of energy, independently of the...