Hard X-Ray Sources and the Primary Energy-Release Site in Solar Flares

Details Hard X-Ray Sources and the Primary Energy-Release Site in Solar Flares Hard X-Ray Sources and the Primary Energy-Release Site in Solar Flares

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasj...47..677m&link_type=abstract

Publications of the Astronomical Society of Japan, v.47, p.677-689.

Astronomy and Astrophysics

Astronomy

96

Sun: Flares, Sun: Magnetic Field, Sun: X-Rays

Scientific paper

Accurately coaligned hard and soft X-ray images, taken simultaneously with the Hard X-ray Telescope (HXT) and the Soft X-ray Telescope (SXT) aboard Yohkoh, of impulsive solar flares on 1992 January 13 (17:29 UT), 1992 October 4 (22:21 UT), and 1993 February 17 (10:35 UT), occurring near the limb, clearly reveal that, in addition to double-footpoint sources, a hard X-ray source exists well above the corresponding soft X-ray loop structure around the peak time of the impulsive phase. This hard X-ray source shows an intensity variation similar to double-footpoint sources and a spectrum that is relatively hard compared with that of loop-top gradual source which appeared later in the flare. We believe that this is the first clear evidence that magnetic reconnection, which is responsible for the primary flare energy release, is under progress above the soft X-ray flaring loop. Maybe this ``loop-top'' hard X-ray source represents the reconnection site itself or the site where the downward plasma stream, ejected from the reconnection point far above the hard X-ray source, collides with the underlying closed magnetic loop. The characteristics of this hard X-ray source are quantitatively discussed in the schemes of thermal (T >~ 10(8) K) and nonthermal interpretations of hard X-ray emission.

Affiliated with

Also associated with

No associations

Rating

Hard X-Ray Sources and the Primary Energy-Release Site in Solar Flares 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 Hard X-Ray Sources and the Primary Energy-Release Site in Solar Flares, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hard X-Ray Sources and the Primary Energy-Release Site in Solar Flares will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1356462