DYNAMICS OF A SOLAR PROMINENCE TORNADO OBSERVED BYSDO/AIA ON 2012 NOVEMBER 7–8

Oscillations of a Giant Solar Tornado

Solar magnetic tornadoes are known to be one of the mass and energy transport mechanisms from the lower solar atmosphere into the upper layers of the solar corona. A bright spiral structure with two arms is observed using high-cadence EUV images of 171, 193 and 304 Ǻ channels of Atmospheric Imaging Assembly (AIA) aboard the Solar Dynamics Observatory (SDO) on 10th of July 2011 for three hours. ...

EUV lines observed with EIS/Hinode in a solar prominence

Context. During a multi-wavelength observation campaign with Hinode and ground-based instruments, a solar prominence was observed for three consecutive days as it crossed the western limb of the Sun in April 2007. Aims. We report on observations obtained on 26 April 2007 using EIS (Extreme ultraviolet Imaging Spectrometer) on Hinode. They are analysed to provide a qualitative diagnostic of the ...

A White-light Prominence observed by TRACE

A “white-light prominence” is a flare visible in the continuum above the solar limb. Few examples of this phenomenon have been reported, but the tremendous event of 2003 November 4 was detected by several instruments. This was a partially occulted flare. We report here a detailed study of a much weaker event, seen in this case from a flare whose chromospheric component was on the disk. We find....

A solar tornado caused by flares

An enormous solar tornado was observed by SDO/AIA on 25 September 2011. It was mainly associated with a quiescent prominence with an overlying coronal cavity. We investigate the triggering mechanism of the solar tornado by using the data from two instruments: SDO/AIA and STEREO-A/EUVI, covering the Sun from two directions. The tornado appeared near to the active region NOAA 11303 that produced ...

Contents Digest November 2012