Magnetic properties of flare-CME productive active regions and CME speed

Details Magnetic properties of flare-CME productive active regions and CME speed Magnetic properties of flare-CME productive active regions and CME speed

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007a%26a...462.1121g&link_type=abstract

Astronomy and Astrophysics, Volume 462, Issue 3, February II 2007, pp.1121-1126

Astronomy and Astrophysics

Astrophysics

10

Sun: Activity, Sun: Magnetic Fields, Sun: Coronal Mass Ejections (Cmes), Sun: Flares

Scientific paper

Aims:We study the properties of magnetic field of flare-coronal-mass-ejection (flare-CME) productive active regions and their statistic correlations with CME speed. Methods: We used a sample of 86 flare-CMEs in 55 solar active regions. Four measures, including the tilt angle (Tilt), total flux (Ft), length of the strong-field and strong-gradient main neutral line (Lsg) and effective distance (d_E), are used to quantify the properties of the magnetic field of flare-CME productive active regions. Results: The results are as follows: (1) for CMEs initiating in active regions, fast CMEs tend to initiate in active regions with large Ft or large d_E. (2) In flare-associated CMEs, faster CMEs tend to be accompanied by more intense flares. (3) The parameters d_E, Lsg and Ft correlate well with one another, especially Ft and Lsg. (4) The occurrence of 11 slow CMEs and 1 fast CME in β type regions with Lsg far below the threshold reminds us of some exceptions to be considered when Lsg with the threshold is used to predict the CME productivity of active regions.
Table 1 is only available in electronic form at http://www.aanda.org

Affiliated with

Also associated with

No associations

Rating

Magnetic properties of flare-CME productive active regions and CME speed 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 Magnetic properties of flare-CME productive active regions and CME speed, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic properties of flare-CME productive active regions and CME speed will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-733988