منابع مشابه
Witnessing magnetic twist with high-resolution observation from the 1.6-m New Solar Telescope
Magnetic flux ropes are highly twisted, current-carrying magnetic fields. They are crucial for the instability of plasma involved in solar eruptions, which may lead to adverse space weather effects. Here we present observations of a flaring using the highest resolution chromospheric images from the 1.6-m New Solar Telescope at Big Bear Solar Observatory, supplemented by a magnetic field extrapo...
متن کاملObservation of Electrons from the Decay of Solar Flare Neutrons
We have found evidence for fluxes of energetic electrons in interplanetary space on board the ISEE-3 spacecraft which we interpret as the decay products of neutrons generated in a solar flare on 1980 June 21. The decay electrons arrived at the s/c shortly before the electrons from the flare and can be distinguished from the latter by their distinctive energy spectrum. The time profile of the de...
متن کاملUnprecedented Fine Structure of a Solar Flare Revealed by the 1.6 m New Solar Telescope
Solar flares signify the sudden release of magnetic energy and are sources of so called space weather. The fine structures (below 500 km) of flares are rarely observed and are accessible to only a few instruments world-wide. Here we present observation of a solar flare using exceptionally high resolution images from the 1.6 m New Solar Telescope (NST) equipped with high order adaptive optics at...
متن کاملFlare Energy and Magnetic Field Variations
We describe ways in which the photospheric vector magnetic field might vary across the duration of a solar flare or CME. We also quantitatively assess the back reaction on the photosphere and solar interior by the coronal field evolution required to release flare energy. Our estimates suggest that the work done by Lorentz forces in this back reaction could supply enough energy to explain observ...
متن کاملThe 22-year Solar Magnetic Cycle. Ii. Flare Activity
This paper is part of a larger set concerning the study of the last Hale cycle, a cycle that had an unexpected behaviour. Here we analyze the occurrence of the solar flares registered in X-ray as well as in Hα, with the aim to find an explanation for the activity much lower than predicted of the current 11-year solar cycle. We conclude that it could be determined by a pulse of flare activity in...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1993
ISSN: 0252-9211
DOI: 10.1017/s0252921100029006