Three Super Active Regions in the Descending Phase of Solar Cycle 23

Details Three Super Active Regions in the Descending Phase of Solar Cycle 23 Three Super Active Regions in the Descending Phase of Solar Cycle 23

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003chjaa...3..491z&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 3, No. 6, p. 491-494

Astronomy and Astrophysics

Astrophysics

16

Sun: Activity, Sun: Flares, Sun: Magnetic Fields

Scientific paper

We analyze the magnetic configurations of three super active regions, NOAA 10484, 10486 and 10488, observed by the Huairou Multi-Channel Solar Telescope (MCST) from 2003 October 18 to November 4. Many energetic phenomena, such as flares (including a X-28 flare) and coronal mass ejections (CMEs), occurred during this period. We think that strong shear and fast emergence of magnetic flux are the main causes of these events. The question is also of great interest why these dramatic eruptions occurred so close together in the descending phase of the solar cycle.

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