Rapid Acceleration of a Coronal Mass Ejection in the Low Corona and Implications for Propagation

Details Rapid Acceleration of a Coronal Mass Ejection in the Low Corona and Implications for Propagation Rapid Acceleration of a Coronal Mass Ejection in the Low Corona and Implications for Propagation

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...588l..53g&link_type=abstract

The Astrophysical Journal, Volume 588, Issue 1, pp. L53-L56.

Astronomy and Astrophysics

Astronomy

74

Sun: Corona, Sun: Coronal Mass Ejections (Cmes), Sun: Flares

Scientific paper

A high-velocity coronal mass ejection (CME) associated with the 2002 April 21 X1.5 flare is studied using a unique set of observations from the Transition Region and Coronal Explorer (TRACE), the Ultraviolet Coronagraph Spectrometer (UVCS), and the Large Angle and Spectroscopic Coronagraph (LASCO). The event is first observed as a rapid rise in GOES X-rays, followed by two simultaneous brightenings that appear to be connected by an ascending looplike feature. While expanding, the appearance of the feature remains remarkably constant as it passes through the TRACE 195 Å passband and LASCO fields of view, allowing its height-time behavior to be accurately determined. The acceleration is consistent with an exponential rise with an e-folding time of ~138 s and peaks at ~1500 m s-2 when the leading edge is at ~1.7 Rsolar from Sun center. The acceleration subsequently falls off with an e-folding time of over 1000 s. At distances beyond ~3.4 Rsolar, the height-time profile is approximately linear with a constant velocity of ~2500 km s-1. These results are briefly discussed in light of recent kinematic models of CMEs.

Affiliated with

Also associated with

No associations

Rating

Rapid Acceleration of a Coronal Mass Ejection in the Low Corona and Implications for Propagation 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 Rapid Acceleration of a Coronal Mass Ejection in the Low Corona and Implications for Propagation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rapid Acceleration of a Coronal Mass Ejection in the Low Corona and Implications for Propagation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1371632