Solar eruptive phenomena embrace a variety of eruptions, including flares, solar energetic
particles, and radio bursts. Since the vast majority of these are associated with the eruption …

Solar cycle 23 witnessed the most complete set of observations of coronal mass ejections
(CMEs) associated with the Ground Level Enhancement (GLE) events. We present an …

The Sun, as an active star, is the driver of energetic phenomena that structure interplanetary
space and affect planetary atmospheres. The effects of Space Weather on Earth and the …

We present a case study for the global extreme-ultraviolet (EUV) wave and its
chromospheric counterpart the Moreton-Ramsey Wave associated with the second X-class …

Type II radio bursts are often associated with coronal shocks that are typically driven by
coronal mass ejections (CMEs) from the Sun. Here we conduct a case study of a type II radio …

Large-scale, globally propagating wave-like disturbances have been observed in the solar
chromosphere and by inference in the corona since the 1960s. However, detailed analysis …

A major, albeit serendipitous, discovery of the SOlar and Heliospheric Observatory mission
was the observation by the Extreme Ultraviolet Telescope (EIT) of large-scale extreme …

Global extreme-ultraviolet (EUV) waves are spectacular traveling disturbances in the solar
corona associated with energetic eruptions such as coronal mass ejections (CMEs) and …

Understanding many physical processes in the solar atmosphere requires determination of
the magnetic field in each atmospheric layer. However, direct measurements of the magnetic …

Magnetoseismology, a technique of magnetic field diagnostics based on observations of
magnetohydrodynamic (MHD) waves, has been widely used to estimate the field strengths …