Fine Structure inside Flare Ribbons and Temporal Evolution

Details Fine Structure inside Flare Ribbons and Temporal Evolution Fine Structure inside Flare Ribbons and Temporal Evolution

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mwoc.conf..221a&link_type=abstract

Multi-Wavelength Observations of Coronal Structure and Dynamics -- Yohkoh 10th Anniversary Meeting. Proceedings of the conferenc

Other

Scientific paper

Non-thermal particles generated in the impulsive phase of solar flares are observed mainly in microwave, hard X-rays, and gamma-rays. Observations in Hα can also give important informations about non-thermal particles precipitating into the chromosphere with a higher spatial resolution than in other wavelengths. We observed an X2.3 flare which occurred in the active region NOAA 9415 on 10 April 2001, in Hα with Sartorius Telescope at Kwasan Observatory, Kyoto University. Thanks to the short exposure time given for the flare, the Hα images show fine structures inside the flare ribbons. In addition to Hα, we analyze microwave, hard X-ray, and EUV data obtained with Nobeyama Radioheliograph, Yohkoh/HXT, and TRACE, respectively. In Hα, several bright kernels are observed in the flare ribbons. On the other hand, the hard X-ray images show only a single pair of bright sources which correspond to one of several pairs of Hα kernels. Examining the difference in the magnetic field strength and in the time profiles of Hα emission for these kernels, we discuss the reason why only one pair kernels are bright in the hard X-ray among the other bright Hα kernels. Comparing the Hα images with EUV images, we also examine the three-dimensional structure of solar flares. While broad and network-like ribbons are observed in Hα, the width of EUV ribbons is relatively narrow, and EUV ribbons are located at the outer edges of the corresponding Hα ribbon.

Affiliated with

Also associated with

No associations

Rating

Fine Structure inside Flare Ribbons and Temporal Evolution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fine Structure inside Flare Ribbons and Temporal Evolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fine Structure inside Flare Ribbons and Temporal Evolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1838374