Study of the X2.6 Flare on 2005 January 15

Details Study of the X2.6 Flare on 2005 January 15 Study of the X2.6 Flare on 2005 January 15

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.1915w&link_type=abstract

American Astronomical Society, SPD meeting #40, #19.15; Bulletin of the American Astronomical Society, Vol. 41, p.849

Astronomy and Astrophysics

Astronomy

Scientific paper

We analyzed in detail the X2.6 flare occurred on 2005 January 15 in NOAA AR 10720. There are several interesting properties of the flare that reveal the connection between two components of magnetic fields: the core fields near the flaring neutral line and extended fields in the large scale. The observed manifestations include: (1) magnetic channel structure developed a few hours before the flare; (2) penumbral decay at the AR periphery and neutral line field enhancement are found to be associated with the flare; (3) Halpha brightening propagates to a remote area outside the AR in the direction of coronal dimming; (4) global activation of activities occurred in a number of ARs temporally associated with the event. We further examine the results of non-linear force free extrapolation, magnetic reconnection rate, and electron acceleration in order to investigate the initiation, prime energy release, and propagation of large-scale disturbance of this event.

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