Recurrent flare/CME events from an emerging flux region

Details Recurrent flare/CME events from an emerging flux region Recurrent flare/CME events from an emerging flux region

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3801n&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 19, p. 3801-3804

Astronomy and Astrophysics

Astrophysics

34

Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections, And Astronomy: Flares, And Astronomy: Magnetic Fields, And Astronomy: X Rays, Gamma Rays, And Neutrinos

Scientific paper

We report on six recurrent `halo' coronal mass ejections (CMEs) that occurred (in November 2000) during a 60-hour period in clear association with major flares in an active region on the solar disk. The region was undergoing dynamic restructuring due to flux emergence. The flares were not long-decay events (LDEs) in terms of soft X-ray light curves and morphologies, although, in the impulsive phase, they produced ejections in soft X-rays that are characteristic of CMEs. We do not detect global changes in EUV and X-ray full-disk images prior to these flares. We suggest that emerging magnetic flux in the core of an active region may be responsible for the occurrence of such repeated flare/CME events.

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