Flare and CME Productivity of Active Region 11429
Abstract
Active region NOAA 11429 produced 3 X- and 15 M-class flares duringMarch 2 to 13. We examined their CME association using SOHO/LASCO andSTEREO/COR1 and found that 8 flares were CME-associated and theremaining 10 were CME-less. We found that the 10 CME-less flaresoccurred successively between 19 UT on March 5 and 22 UT on March 6. Theintensities of the flares were relatively low (range: M1.0 - M2.1;median: M1.3), but the occurrence rate was very high (at 3-hourintervals on average). During this period a CME erupted from thesouthern edge of this region but the X-ray enhancement was not detectedby GOES. The CME-associated flares are relatively intense (range: M2.0 -X5.4; median M8.1), and the waiting times (intervals between successiveflares) are longer ( 36 hours on average) than those of the CME-lessflares. We present a comprehensive view of flare-CME activities of theactive region 11429 and discuss the difference of the CME-associated andCME-less flares.
- Publication:
-
Solar Heliospheric and INterplanetary Environment (SHINE 2012)
- Pub Date:
- June 2012
- Bibcode:
- 2012shin.confE.161Y