Multi-wavelength observations of an X-class flare without a coronal mass ejection.

Details Multi-wavelength observations of an X-class flare without a coronal mass ejection. Multi-wavelength observations of an X-class flare without a coronal mass ejection.

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002soph..205..325g&link_type=abstract

Solar Physics, v. 205, Issue 2, p. 325-339 (2002).

Physics

19

Scientific paper

Developments in our knowledge of coronal mass ejections (CMEs) have shown that many of these transients occur in association with solar flares. On the occasions when there is a common occurrence of the eruption and the flare, it is most likely that the flare is of high intensity and/or long-duration (Burkepile, Hundhausen, and Webb, 1994; Munro et al., 1979; Webb and Hundhausen, 1987). A model for the relationship between the long-duration event and eruption has been developed (Carmichael, 1964; Sturrock, 1966; Hirayama, 1974; Kopp and Pneuman, 1976), but not so for the high-intensity flares and eruptions. This work investigates the magnetic topology changes that occur for a X1.2 GOES classification flare which has no associated CME. It is found that the flare is likely to result from the interaction between two pre-existing loops low in the corona, producing a confined flare. Slightly higher in the corona, a loop is observed which exhibits an outward motion as a result of the reconfiguration during reconnection. The objective of this work is to gain insight on the magnetic topology of the event which is critical in order to determine whether a high-intensity flare is likely to be related to a CME or not.

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