An Observational Overview of Solar Flares

We present an overview of solar flares and associated phenomena, drawing upon a wide range of observational data primarily from the RHESSI era. Following an introductory discussion and overview of the status of observational capabilities, the article is split into topical sections which deal with different areas of flare phenomena (footpoints and ribbons, coronal sources, relationship to coronal mass ejections) and their interconnections. We also discuss flare soft X-ray spectroscopy and the energetics of the process. The emphasis is to describe the observations from multiple points of view, while bearing in mind the models that link them to each other and to theory. The present theoretical and observational understanding of solar flares is far from complete, so we conclude with a brief discussion of models, and a list of missing but important observations.Comment: This is an article for a monograph on the physics of solar flares, inspired by RHESSI observations. The individual articles are to appear in Space Science Reviews (2011

Measurement of the g-factor of the 3/sup -/ octopole vibrational state in /sup 208/pb

The nuclear g-factor of the collective 3- level at 2615 keV in 208pb has been measured by the perturbed angular correlation technique. The result of g(3-) = 0.58 ± 0.14 confirms the strongly collective character of the state

Measurement of the g-factor of the 3/sup -/ octopole vibrational state in /sup 208/pb

The nuclear g-factor of the collective 3- level at 2615 keV in 208pb has been measured by the perturbed angular correlation technique. The result of g(3-) = 0.58 ± 0.14 confirms the strongly collective character of the state