Introduction

This article is a review of observations, in particular observations that resemble our expectations of reconnection. By the term magnetic reconnection, I am referring to the process by which magnetic flux is swept into a small area, where oppositely directed components annihilate each other, and the residual magnetic tension in the newly-reconnected field causes the field and plasma to be expelled from the reconnection region. The resulting conversion of magnetic energy into kinetic energy is...

Energy Scale Of Nanoflares

We overlay the energy of individual nanoflares derived in this manner and the occurrence rate upon the previously observed frequency distribution in Figure 2. Our derived energy (1022 erg) is much smaller than the value previously observed ( greater than 1024 erg). And the occurrence rate of nanoflares is much larger than that obtained by extrapolating the distribution of J -1-5. The physical origin of nanoflares is believed to be magnetic reconnection. Energy available from magnetic...

Abstract

Many spectacular coronal mass ejections (CMEs) are known to occur without major flares. This has created a trend in which flares are considered to be unimportant in the processes of CME initiation. We point out that energetic CMEs are often associated with intense short-duration flares, and that there may even be a class of CMEs caused by flares. In order to prove or disprove the latter possibility, we need to go back to flare studies in a more systematic manner. Distinguishing waves from...

References

Akhmedov, E.K., The Neutrino Magnetic Moment and Time Variations of the Solar Neutrino Flux, in Fourth International Solar Neutrino Conference, ed. W. Hampel, Max-Planck-Institut fur Kernphysik Heidelberg, Germany, p. 388 (1997). Altmann, M., et al. GNO Solar Neutrino Observations Results for GNO I, Physics Letters B, 490, 16 (2000). Bretthorst, G.L. Bayesian Spectrum Analysis and Parameter Estimation, Vol. 48 of Lecture Notes in Statistics, ed. J. Berger et al., Springer-Verlag, Berlin,...

Solar Week

Another major E PO activity resulting from the impact of Yohkoh is Solar Week. Solar Week was created with the primary aim of addressing the under-representation of women in the research and teaching of the physical sciences by specifically targeting middle-school girls. Solar Week is a daughter-site to YPOP, feeding off the YPOP Classroom activities. However, it also incorporates a number of novel features a lower level of interaction via games in addition to activities, direct interaction...

Dimensionality

Many of the diagrams and models in the literature have been strictly two-dimensional, and have been extremely successful. Surprisingly, several of the analyses which have made the greatest impact have dealt with flare structures that closely resemble the 2D cartoons e.g. Tsuneta 1996, 1997 Forbes amp Acton 1996 Aschwanden et al. 1996 Yokoyama et al. 2001 . At least one of the observations mentioned herein bears a striking resemblance to a 2.5D representation...