This review highlights current theoretical research on eruptive phenomena in the solar
atmosphere. We start by looking back upon the early theories and their development. Any …

This two-part book is devoted to classic fundamentals and current practices and
perspectives of modern plasma astrophysics. This second part discusses the physics of …

Recent observations from TRACE in the photospheric white-light channel have shown
sunspots that rotate up to 200° about their umbral centre over a period of 3–5 days. The …

A large fraction of major flares occur in active regions that exhibit a δ configuration. The
formation and disintegration of δ configurations is very important in understanding the …

A surge event with multi-instrument and multiwavelength observations is presented. The
event occurred in a surge-productive region on 2001 August 30. TRACE white-light images …

On the basis of Yohkoh Hard X-Ray Telescope data and the magnetograms taken by the
SOHO Michelson Doppler Imager and the Solar Magnetic Field Telescope at Huairou Solar …

Abstract The Bastille Day flare on 2000 July 14 was well observed by several space-and
ground-based observatories and studied extensively by many researchers. Recently, we …

We analyze Hα images, soft X-ray profiles, magnetograms, extreme ultra-violet images and,
radio observations of two homologous flare events (M1. 4/1N and M9. 6/2B) on 2003 …

ABSTRACT δ-sunspots, with highly complex magnetic structures, are very productive in
energetic eruptive events, such as X-class flares and homologous eruptions. We here study …

The unsigned magnetic flux content in the flux concentrations of two active regions is
calculated by using a set of 248 high-resolution Solar and Heliospheric Observatory …