A multiwavelength study of Swift GRB 060111B constraining the origin of its prompt optical emission

G. Stratta; A. Pozanenko; J.-L. Atteia; A. Klotz; S. Basa; B. Gendre; F. Verrecchia; M. Boër; S. Cutini; M. Henze; S. Holland; M. Ibrahimov; F. Ienna; I. Khamitov; S. Klose; V. Rumyantsev; V. Biryukov; D. Sharapov; F. Vachier; S. Arnouts; D. A. Perley

doi:10.1051/0004-6361/200911981

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Volume 503 / No 3 (September I 2009)

A&A, 503 3 (2009) 783-795

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Table 7:

Best-fit decay indexes of the early optical emission for all GRBs with well monitored optical counterpart that shows a steep-to-shallow behavior (Fig. 10).
GRB	Filter	$\alpha_1$	$\alpha_2$	$t_{{\rm break}}$	z
				(s)
990123⁽¹⁾	V	$\sim$ 2.5	$\sim$ 1.5	700	1.60
021211⁽²⁾	R	$1.97\pm0.05$	$1.01\pm0.02$	300	1.0
060117⁽³⁾	R	$2.49\pm0.05$	$1.47\pm0.03$	300	1^a
061126⁽⁴⁾	R	$2.0\pm0.3$	$0.76\pm0.06$	780	1.1588
060111B	R	$2.4\pm0.2$	$1.18\pm0.05$	75	2
080319B⁽⁵⁾	R	$2.49\pm0.09$	$1.25\pm0.02$	900	0.937
090102⁽⁶⁾	R	$1.83\pm0.13$	$1.1\pm0.3$	400	1.547

^a: For GRB 060117 since the redshift is not known, we imposed z=1.

References. (1) Akerlof et al. (1999); (2) Holland et al. (2004); (3) Jelínek et al. (2006); (4) Perley et al. (2008); (5) Racusin et al. (2008a); (6) Klotz et al. (2009).

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