Radial Evolution of Well-Observed Slow CMEs in the Distance Range 2 - 30 R &sun;

Details Radial Evolution of Well-Observed Slow CMEs in the Distance Range 2 - 30 R &sun; Radial Evolution of Well-Observed Slow CMEs in the Distance Range 2 - 30 R &sun;

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009soph..257..351s&link_type=abstract

Solar Physics, Volume 257, Issue 2, pp.351-361

Physics

2

Scientific paper

We performed a detailed analysis of 27 slow coronal mass ejections (CMEs) whose heights were measured in at least 30 coronagraphic images and were characterized by a high quality index (≥4). Our primary aim was to study the radial evolution of these CMEs and their properties in the range 2 - 30 solar radii. The instantaneous speeds of CMEs were calculated by using successive height - time data pairs. The obtained speed - distance profiles [ v( R)] are fitted by a power law v = a( R- b) c . The power-law indices are found to be in the ranges a=30 - 386, b=1.95 - 3.92, and c=0.03 - 0.79. The power-law exponent c is found to be larger for slower and narrower CMEs. With the exception of two events that had approximately constant velocity, all events were accelerating. The majority of accelerating events shows a v( R) profile very similar to the solar-wind profile deduced by Sheeley et al. ( Astrophys. J. 484, 472, 1997). This indicates that the dynamics of most slow CMEs are dominated by the solar wind drag.

Affiliated with

Also associated with

No associations

Rating

Radial Evolution of Well-Observed Slow CMEs in the Distance Range 2 - 30 R &sun; 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 Radial Evolution of Well-Observed Slow CMEs in the Distance Range 2 - 30 R &sun;, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial Evolution of Well-Observed Slow CMEs in the Distance Range 2 - 30 R &sun; will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-770323