Infrared/optical – X-ray simultaneous observations of X-ray flares in GRB 071112C and GRB 080506

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Table 2:

Decay and spectral index of the X-ray afterglow of GRB 071112C.
Region	T (s)	$\alpha_{\rm X}$ $^{\dag }$ ( $\chi^2$ /d.o.f.)	$\beta_{\rm X}$ $^{\ddag }$
Normal Decay	100 < T < 450, 1270 < T < 1630	-1.27 $\pm$ 0.05(104.8/96)	-0.83 $\pm$ 0.04
Flare Rise	450 < T < 650	2.51 $\pm$ 0.77 (7.3/6)	-0.34 $\pm$ 0.15
Flare Decay	650 < T < 1270	-2.05 $\pm$ 0.26 (16.5/16)	-0.62 $\pm$ 0.06
Post-break	12 542 < T < 14 7425	-1.43 $\pm$ 0.04 (104.8/96)	-0.82 _-0.16^+0.08

Notes. The uncertainties show the 90% confidence levels of the parameters. $^{(\dag )}$ X-ray decay index. $^{(\ddag )}$ X-ray spectral index( $\chi^2$ /d.o.f. = 587.7/298).

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