Solar Trans-equatorial Activity

Details Solar Trans-equatorial Activity Solar Trans-equatorial Activity

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007soph..244...75w&link_type=abstract

Solar Physics, Volume 244, Issue 1-2, pp. 75-94

Physics

15

Sun: Cme, Sun: Trans-Equatorial Activity

Scientific paper

We have found that solar flares in NOAA active region (AR) 10696 were often associated with large-scale trans-equatorial activities. These trans-equatorial activities appeared to be very common and manifest themselves through i) the formation and eruption of trans-equatorial loops (TELs), ii) the formation and eruption of trans-equatorial filaments (TEFs), and iii) the trans-equatorial brightening (TEB) in the chromosphere. It is determined that the TEF was formed following episodic plasma ejecta from flares occurring in the AR. The TEF eruption was associated with a trans-equatorial flare. All flares in the AR that were accompanied by trans-equatorial activities were associated with halo coronal mass ejections (CMEs). It was noticed that one or several major flares in the AR were followed by an increase of brightness and nonpotentiality of a TEL. These coupled events had a lifetime of more than 12 hours. In addition their associated halo CMEs always had a positive acceleration, indicating prolonged magnetic reconnections in the outer corona at high altitudes.

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