Relation between Flare-associated X-Ray Ejections and Coronal Mass Ejections

Details Relation between Flare-associated X-Ray Ejections and Coronal Mass Ejections Relation between Flare-associated X-Ray Ejections and Coronal Mass Ejections

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...525l..57n&link_type=abstract

The Astrophysical Journal, Volume 525, Issue 1, pp. L57-L60.

Astronomy and Astrophysics

Astronomy

49

Sun: Corona, Sun: Flares, Sun: X-Rays, Gamma Rays

Scientific paper

In an attempt to identify the direct signatures of coronal mass ejections (CMEs) in soft X-ray wavelengths, we have searched for plasma ejections in Yohkoh soft X-ray telescope (SXT) images in a total of 17 limb flares, and compared the results with the Solar and Heliospheric Observatory LASCO data. A general correlation exists between the presence/absence of the X-ray ejection and the CME. Although the height versus time relation often indicates (under the assumption of constant speed) that the CME onset coincides with the X-ray ejection, the latter probably does not represent the CME front, because the CME speed must result from acceleration, which would put the estimated onset at an earlier time. In some cases, the estimated CME onset time comes well before the impulsive phase of the associated flare. Although the role of the flare-associated plasma ejection in a CME is still unclear, we propose that its occurrence depends on the presence of open field lines, which can be due to a preceding CME. Lastly, we present a rare example of SXT observations of what appeared to be the three-part structure of a CME, which was seen a few minutes before a major flare started.

Affiliated with

Also associated with

No associations

Rating

Relation between Flare-associated X-Ray Ejections and Coronal Mass Ejections 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 Relation between Flare-associated X-Ray Ejections and Coronal Mass Ejections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relation between Flare-associated X-Ray Ejections and Coronal Mass Ejections will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1284664