The structure and dynamics of the solar corona is dominated by the magnetic field. In most
areas in the corona magnetic forces are so dominant that all non-magnetic forces such as …

The magnetic field is the main driver of the activity in the solar upper atmosphere, but its
measurement is notoriously difficult. In order to determine the magnetic field in the …

Motivated by the controversy over the surface metallicity of the Sun, we present a re-analysis
of the solar photospheric oxygen (O) abundance. New atomic models of O and Ni are used …

In the lower solar atmosphere, the chromosphere is permeated by jets known as spicules, in
which plasma is propelled at speeds of 50 to 150 kilometers per second into the corona. The …

The solar chromosphere forms a crucial, yet complex and until recently poorly understood,
interface between the solar photosphere and the heliosphere.▪ Advances in high-resolution …

Abstract Study Analysis Group 21 (SAG21) of NASA's Exoplanet Exploration Program
Analysis Group was organized to study the effect of stellar contamination on space-based …

Abstract The Multi-slit Solar Explorer (MUSE) is a proposed mission composed of a multislit
extreme ultraviolet (EUV) spectrograph (in three spectral bands around 171 Å, 284 Å, and …

Future ground-based telescopes, such as the 4-metre class facilities DKIST and EST, will
dramatically improve on current capabilities for simultaneous multi-line polarimetric …

The inference of the underlying state of the plasma in the solar chromosphere remains
extremely challenging because of the nonlocal character of the observed radiation and …

Abstract The Atacama Large Millimeter/submillimeter Array (ALMA) is a new powerful tool for
observing the Sun at high spatial, temporal, and spectral resolution. These capabilities can …