Solar radio emission provides valuable information on the structure and dynamics of the
solar atmosphere above the temperature minimum. We review the background and most …

Context. The Sun is an extraordinary workbench, on which several fundamental
astronomical parameters can be measured with high precision. Among these parameters …

An atmospheric model was constructed in order to reproduce quantitatively the observations
at 17 GHz from Nobeyama Radio Heliograph, namely the brightness temperature at disk …

The solar diameter, and its possible variation, have been the subject of careful
measurements for over 350 years, with ever increasing accuracy. The importance of the …

The Siberian Solar Radio Telescope (SSRT) is a solar-dedicated directly-imaging
interferometer observing the Sun at 5.7 GHz. SSRT has operated in the two-dimensional …

ABSTRACT A variation of gravitational redshift, arising from stellar radius fluctuations, will
introduce astrophysical noise into radial velocity measurements by shifting the centroid of …

At subterahertz frequencies—ie, millimeter and submillimeter wavelengths—there is a gap
in measurements of the solar radius, as well as other parameters of the solar atmosphere …

The Nobeyama Radioheliograph has been observing the Sun at a frequency of 17 GHz
regularly since 1992, providing synthesized full-disk images. This long period of continuous …

The increasing precision of astronomical observations of stars and stellar systems is
gradually getting to a level where the use of slightly different values of the solar mass …

The Sun emits radiation at several wavelengths of the electromagnetic spectrum. In the
optical band, the solar radius is 695 700 km, and this defines the photosphere, which is the …