Stability of the coronal magnetic field around large confined and eruptive solar flares

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Volume 686 (June 2024)

A&A, 686 (2024) A115

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Table 1.

NOAA number, GOES SXR flare class, time-averaged pre-flare values of critical heights (using n_crit = 0.8 or n_crit = 1.5) and current-weighted center of MFR (SA) derived from FPIL-normal planes for the flares under study.

NOAA	SXR class	${⟨ {\bar{h}}_{crit} ⟩}^{(n = 0.8)}$ ${{\langle\overline{h}_{\mathrm{crit}}\rangle}}^{(n=0.8)}$	$⟨ {\bar{h}}_{center} ⟩$ $\langle{\overline{h}_{\mathrm{center}}}\rangle$	${⟨ {\bar{h}}_{crit} ⟩}^{(n = 0.8)} - ⟨ {\bar{h}}_{center} ⟩$ ${{\langle\overline{h}_{\mathrm{crit}}\rangle}}^{(n=0.8)}-\langle\overline{h}_{\mathrm{center}}\rangle$	${⟨ {\bar{h}}_{crit} ⟩}^{(n = 1.5)}$ ${{\langle\overline{h}_{\mathrm{crit}}\rangle}}^{(n=1.5)}$
12673	X9.3	7.28 ± 0.44	4.12 ± 0.32	3.16 ± 0.77	25.34 ± 2.12
11158	X2.2	8.69 ± 0.24	4.46 ± 0.17	4.23 ± 0.41	42.07 ± 0.59
11429	X5.4	11.34 ± 0.37	5.36 ± 0.19	5.98 ± 0.56	34.28 ± 0.38
12297	X2.1	5.24 ± 0.24	4.70 ± 0.11	0.54 ± 0.36	13.34 ± 0.48
11890	X1.1	9.54 ± 0.29	4.51 ± 0.26	5.03 ± 0.55	24.96 ± 0.74

12192	X3.1	29.42 ± 1.16	5.10 ± 0.44	24.32 ± 1.60	71.05 ± 0.41
12268	M2.0	50.11 ± 2.08	4.02 ± 0.48	46.09 ± 2.56	86.13 ± 0.20
11302	M4.0	30.85 ± 0.2	5.52 ± 0.39	25.33±0.59	62.20 ± 0.32
11339	M1.8	32.75 ± 0.24	7.04 ± 1.52	25.72±1.77	65.63 ± 0.68
11166	X1.5	15.82 ± 0.47	2.92 ± 0.14	12.90±0.618	44.93 ± 0.34

Notes. In the second-last column, we list height differences computed from the values of ${⟨ {\bar{h}}_{crit} ⟩}^{(n_{crit} = 0.8)}$ ${\langle\overline{h}_{\mathrm{crit}} \rangle}^{(n_{\mathrm{crit}}=0.8)}$ and ${\bar{h}}_{center}$ $\overline{h}_{\mathrm{center}}$ . Time averages were computed from all data points within a five-hour time window prior to the nominal flare start time. The first five flares in the list were eruptive flares.

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