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 …

Coronal mass ejections (CMEs) are the largest-scale eruptive phenomenon in the solar
system, expanding from active region-sized nonpotential magnetic structure to a much larger …

Coronal holes are the darkest and least active regions of the Sun, as observed both on the
solar disk and above the solar limb. Coronal holes are associated with rapidly expanding …

This review article summarizes the advancement in the studies of Earth-affecting solar
transients in the last decade that encompasses most of solar cycle 24. It is a part of the effort …

Geomagnetic storms are an important aspect of space weather and can result in significant
impacts on space-and ground-based assets. The majority of strong storms are associated …

We report direct observations of the magnetic reconnection site during an eruptive process
that occurred on 2003 November 18. The event started with a rapid expansion of a few …

Abstract The IMPACT (In situ Measurements of Particles And CME Transients) investigation
on the STEREO mission was designed and developed to provide multipoint solar wind and …

The basic idea of the paper is to present transparently and confront two different views on
the origin of large-scale coronal shock waves, one favoring coronal mass ejections (CMEs) …

The activity of the Sun alternates between a solar minimum and a solar maximum, the former
corresponding to a period of “quieter” status of the heliosphere. During solar minimum, it is …

The Sun is magnetically active and often produces eruptive events on different energetic
and temporal scales. Until recently, the upper limit of such events was unknown and …