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The Astrophysical Journal, 623:L53–L56, 2005 April 10

MAGNETIC FREE ENERGY IN NOAA ACTIVE REGION 10486 ON 2003 OCTOBER 29

Thomas R. Metcalf1,, K. D. Leka, D2. L. Mickey3

Received 2004 October 11; accepted 2005 March 1; published 2005 March 17

1 Lockheed Martin Solar and Astrophysics Laboratory 2 Colorado Research Associates Division,

NorthWest Research Associates, Inc.3 Institute for Astronomy, University of Hawaii

太陽雑誌会速報2005.06.13

T.T.Ishii

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Flares in Active Region NOAA 10486

Oct. 23a

23b 26

2829 Nov. 2

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RHESSI Light Curve (50-100keV,4s interval)

20 min.

5Onset (20:37) Peak (20:49)

X10 Flare on 2003 Oct. 29

TRACE 1600 A

TRACE WLRed and Blue contourSOHO/ MDI (500 Gauss)

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Chromospheric vector magnetogram

Imaging Vector Magnetograph (IVM)Mees Solar Observatory

Na I D1 line (5895A)18:46 – 18:57 UT on 2003 Oct. 29

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Chromospheric vector magnetogram

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RHESSI Light Curve (50-100keV,4s interval)

Unusually large amount of free magnetic energyIncreasing ?? just after the impulsive phase

(large error)Previous results with the same instrument and method

NOAA 7216: 1.2 ± 0.2 (×1033 ergs)NOAA 8299: 1.3 ± 0.5 (×1033 ergs)