Table 5: Best-fit parameters of the constant + skewed Gaussian model reproducing the cross-correlation (CCF) peaks. We cross-correlated the whole light curves of November 14, of December 1st and their main flares. We compared the [0.2-0.8] keV light curves to the [0.8-2.4] keV (Id. I) and to the [2.4-10] keV light curves (Id. II). We also performed a Discrete cross-correlation (DCC) on the same curves. We reproduced the central $\pm $15 ks and $\pm $5 ks of the November 14 CCF and the central $\pm $5 ks of those of December 1st. Negative lags mean that the variations in the hard X-ray band lead those in the soft X-ray band. The reported skewed Gaussian $\sigma _i$ are the weighted averages of the four amplitudes.
Curves id. Lag (s) $\langle \sigma_1 \rangle$ $\langle\sigma_2\rangle$
bin-time (s) 50 100 200 500 (103 s) (103 s)
14 Nov. 2002: whole curve. Central $\pm15$ ks.
CCF I $-890\pm40$ $-750\pm60$ $-830\pm70$ $-760\pm120$ $13.41\pm0.15$ $12.76\pm0.17$
DCC I -1030 -830 -740 -930 13.52 12.72
CCF II $-1860\pm60$ $-1670\pm80$ $-1730\pm110$ $-1620\pm160$ $15.04\pm0.15$ $12.59\pm0.20$
DCC II -2010 -1760 -1730 -1920 15.23 12.36
14 Nov. 2002: whole curve. Central $\pm5$ ks.
CCF I $-140\pm90$ $-60\pm110$ $-50\pm180$ $-20\pm250$ $4.00\pm0.17$ $2.81\pm0.20$
DCC I -90 -80 -20 -50 4.04 2.66
CCF II $-180\pm130$ $-180\pm180$ $-120\pm260$ $-90\pm360$ $7.20\pm0.40$ $3.02\pm0.27$
DCC II -80 -170 -60 -60 7.40 2.79
14 Nov. 2002: main flare. Central $\pm15$ ks.
CCF I $-600\pm40$ $-560\pm60$ $-630\pm90$ $-640\pm140$ $9.04\pm0.06$ $7.84\pm0.07$
DCC I -770 -700 -620 -790 9.10 8.01
CCF II $-1390\pm60$ $-1350\pm90$ $-1340\pm130$ $-1410\pm190$ $10.46\pm0.07$ $8.24\pm0.09$
DCC II -1580 -1550 -1460 -1370 10.39 8.38
14 Nov. 2002: main flare. Central $\pm5$ ks
CCF I $-210\pm90$ $-140\pm140$ $-110\pm190$ $-80\pm300$ $3.97\pm0.18$ $2.95\pm0.21$
DCC I -220 -160 -90 -150 4.30 3.14
CCF II $-410\pm170$ $-290\pm260$ $-250\pm340$ $-220\pm500$ $8.31\pm0.56$ $4.01\pm0.43$
DCC II -340 -380 -240 -350 8.58 4.30
1 Dec. 2002: whole curve
CCF I $160\pm50$ $220\pm60$ $250\pm90$ $230\pm120$ $2.41\pm0.07$ $4.04\pm0.06$
DCC I 90 160 200 120 2.49 4.03
CCF II $530\pm80$ $570\pm100$ $610\pm130$ $740\pm220$ $2.87\pm0.13$ $6.04\pm0.18$
DCC II 560 570 590 400 2.77 6.08
1 Dec. 2002: flare
CCF I $430\pm50$ $470\pm60$ $490\pm80$ $480\pm110$ $3.29\pm0.10$ $3.85\pm0.08$
DCC I 400 460 480 450 3.24 3.83
CCF II $950\pm80$ $950\pm100$ $940\pm130$ $860\pm180$ $3.39\pm0.15$ $4.34\pm0.10$
DCC II 1040 960 920 840 3.32 4.29


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