Observations of CMEs associated with trans-equatorial loop systems

Details Observations of CMEs associated with trans-equatorial loop systems Observations of CMEs associated with trans-equatorial loop systems

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.1004k&link_type=abstract

American Astronomical Society, SPD meeting #34, #10.04; Bulletin of the American Astronomical Society, Vol. 35, p.825

Astronomy and Astrophysics

Astronomy

Scientific paper

Soft X-ray observations frequently show the existence of trans-equatorial loop systems, often rooted near an active region. The visibility in soft X-rays implies relatively high temperature, a fact that has no ready explanation. The Yohkoh SXT observations from April-May 1998 showed the persistent formation and re-formation of trans-equatorial loops associated with NOAA AR 8210. At least four such events happened: May 2, 6, 8, and 9. In these events the erupting loop systems become parts of the associated CMEs. These events were also associated with major flares and with global waves visible in soft X-rays and type II bursts. We suggest that this morphology, even in cases in which the trans-equatorial structure was not hot enough to be visible in soft X-rays, could explain the occurrence of the larger angular scales of some CMEs as opposed to their associated flares.

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