Waves and oscillations have been observed in the Sun's atmosphere for over half a century.
While such phenomena have readily been observed across the entire electromagnetic …

The dynamic activity of stars such as the Sun influences (exo) planetary space environments
through modulation of stellar radiation, plasma wind, particle and magnetic fluxes. Energetic …

Abstract The Helioseismic and Magnetic Imager (HMI) instrument and investigation as a part
of the NASA Solar Dynamics Observatory (SDO) is designed to study convection-zone …

The attempt to understand the physics of the structure of stars and their change in time–their
evolution–has been bothering many physicists and astronomers ever since the last century …

This article surveys the development of observational understanding of the interior rotation
of the Sun and its temporal variation over approximately forty years, starting with the 1960s …

We collect data on the masses, radii, etc., of three classes of close binary stars: low-
temperature contact binaries (LTCBs), near-contact binaries (NCBs), and detached close …

Solar meridional circulation is an axisymmetric flow system, extending from the equator to
the poles (∼ 20 m/s at the surface,≈ 1% of the mean solar rotation rate), plunging inwards …

Observers have long measured solar rotation with different techniques and obtained
different results. This paper compares differential rotation measurements from four …

The seismic study of the Sun and other stars offers a unique window into the interior of these
stars. Thanks to helioseismology, we know the structure of the Sun to admirable precision. In …

After emerging to the solar surface, the Sun's magnetic field displays a complex and intricate
evolution. The evolution of the surface field is important for several reasons. One is that the …