Time delays between Fermi-LAT and GBM light curves of gamma-ray bursts

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Table 1

Best-fit parameters for the time lags between observed and simulated LAT and GBM light curves.

GRB	A ^a	μ^a (s)	Σ_r^a (s)	Σ_l^a (s)	B^a	lag^b (s)	lag^c (s)	T^d (s)	Ref.
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)

080916C	0.11 ± 0.01	3.65 ± 0.22	1.36 ± 0.17	3.81 ± 0.22	0.30 ± 0.01		–	~3.6	1
090510	−0.22 ± 0.02	0.22 ± 0.02	0.24 ± 0.02	0.18 ± 0.02	0.75 ± 0.02		–	~0.56	2
090902B	−0.62 ± 0.09	−0.62 ± 0.21	8.15 ± 0.67	7.96 ± 0.59	0.97 ± 0.09			~9.6	3
090926A	−0.75 ± 0.09	4.36 ± 0.26	5.78 ± 0.36	8.70 ± 0.72	1.12 ± 0.09			~3.3	4
110731A	−0.47 ± 0.03	4.62 ± 0.17	2.71 ± 0.16	4.45 ± 0.24	0.98 ± 0.03		–	~2.4	5

Notes.

^(a)

Best fit parameters with formal 1σ errors for the constant plus asymmetric Gaussian function (Eq. (1)). The 1σ asymmetric uncertainty on the μ parameter is given by the Σ_r and Σ_l parameters.

^(b)

Time lag and 1σ uncertainty derived from the maximum of the time lag distribution of simulated light curves.

^(c)

Time lag and 1σ uncertainty derived from the secondary maximum of the time lag distribution of simulated light curves.

^(d)

Time lags based on the initial LAT delay, as reported in the literature.

Reference. References for Col. 9: 1) Abdo et al. (2009a); 2) Abdo et al. (2009b); 3) Abdo et al. (2009c); 4) Ackermann et al. (2011); 5) Ackermann et al. (2013a).

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