Titlebook: Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond; Tetsuya Watanabe,Takeo Kosugi,Alphonse C. Sterling Book 1998 Springer

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Magnetic Reconnection and Dynamos in Laboratory Plasmas and in many other contexts. One of the achievements of YOHKOH has been to provide observational evidence for magnetic reconnection in the solar corona (e.g. Tsuneta et al, 1992). As well as large scale reconnections which may reconfigure the global field, many theories of coronal heating propose th

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A Mechanism Driving Solar Flaresfor reconnection is practically missing, indicating a basic deficiency of the flare models and theories. Here I classify the reconnection configurations according to their possible topologies. Considering the physical mechanisms, which would be able to generate these different topologies, I present

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On the Origin of Helicity in Active Region Magnetic Fieldsugh the convection zone (Babcock 1961), it acquires writhe through the Coriolis force on internal longitudinal flows (Fan, Fisher, & DeLuca 1993). The tilt . of active regions with respect to the equator is an observable manifestation of such writhe, at photospheric levels. If . is conserved, as we

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The Filament Disappearance of May 7, 1992] event). It was studied by Khan et al. (1993) from X-ray data obtained with SXT onboard the . satellite. Recently Meudon observers recognised that they had H. observations for the period of the EBI event. We report here our further research on the EBI event, based mainly on H.- and radio-observatio

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Observations of Superhot Plasma in Solar Flaresers and to calculate temperature (..) and emission measure (EM.) of the hotter component assuming a two temperature model. The calculated distributions of .. and EM. are compared with temperatures obtained from the Fe XXV and Ca . diagnostics. In one flare, we find .. of ~30 MK in a loop structure a

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dimensional environments extending over many wavelengths. This is particularly so for environments characterized by a refractive index field with a compact region of arbitrary (.-dimensional) variability superimposed upon a transversely inhomogeneous ((.-1)-dimensional) background profile. For such

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H. Haradimensional environments extending over many wavelengths. This is particularly so for environments characterized by a refractive index field with a compact region of arbitrary (.-dimensional) variability superimposed upon a transversely inhomogeneous ((.-1)-dimensional) background profile. For such

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Madhulika Guhathakurta,Richard Fisher,Keith Strongin [1]–[7]. Recently, some numerical methods associated with this problem have appeared [4]–[7]. When the wave climbs up the inclined sea shore, there are moving boundaries which are unknown in advance. Under the potential flow assumption, Kim [5] calculated the climbing of a soliton on an inclined