Investigating the off-axis GRB afterglow scenario for extragalactic fast X-ray transients

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Volume 690 (October 2024)

A&A, 690 (2024) A101

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Table C.1.

Fitting results of broadband modelling of merger-induced GRB light curves with afterglowpy given a uniform jet model.

GRB	θ_obs	log E₀	θ_C	log n₀	p	log ϵ_e	log ϵ_B	stat/d.o.f. (d.o.f.)
	(rad)	(erg)	(rad)	(cm⁻³)
050709	$0 . 272_{- 0.131}^{+ 0.142}$ $0.272_{-0.131}^{+0.142}$	$50 . 75_{- 0.15}^{+ 0.17}$ $50.75_{-0.15}^{+0.17}$	$0 . 340_{- 0.134}^{+ 0.126}$ $0.340_{-0.134}^{+0.126}$	$- 4 . 17_{- 0.28}^{+ 0.31}$ $-4.17_{-0.28}^{+0.31}$	$2 . 95_{- 0.07}^{+ 0.04}$ $2.95_{-0.07}^{+0.04}$	$- 0 . 52_{- 0.05}^{+ 0.03}$ $-0.52_{-0.05}^{+0.03}$	$- 0 . 60_{- 0.15}^{+ 0.09}$ $-0.60_{-0.15}^{+0.09}$	6.29 (3)
050724	$0 . 027_{- 0.019}^{+ 0.036}$ $0.027_{-0.019}^{+0.036}$	$50 . 34_{- 0.13}^{+ 0.20}$ $50.34_{-0.13}^{+0.20}$	$0 . 288_{- 0.063}^{+ 0.050}$ $0.288_{-0.063}^{+0.050}$	$0 . 38_{- 0.60}^{+ 0.39}$ $0.38_{-0.60}^{+0.39}$	$2 . 29_{- 0.09}^{+ 0.10}$ $2.29_{-0.09}^{+0.10}$	$- 0 . 61_{- 0.17}^{+ 0.09}$ $-0.61_{-0.17}^{+0.09}$	$- 1 . 23_{- 0.46}^{+ 0.49}$ $-1.23_{-0.46}^{+0.49}$	2.16 (8)
051227	$0 . 019_{- 0.011}^{+ 0.013}$ $0.019_{-0.011}^{+0.013}$	$52 . 86_{- 0.67}^{+ 0.74}$ $52.86_{-0.67}^{+0.74}$	$0 . 048_{- 0.020}^{+ 0.021}$ $0.048_{-0.020}^{+0.021}$	$- 0 . 18_{- 1.85}^{+ 0.88}$ $-0.18_{-1.85}^{+0.88}$	$2 . 16_{- 0.09}^{+ 0.08}$ $2.16_{-0.09}^{+0.08}$	$- 1 . 04_{- 0.69}^{+ 0.41}$ $-1.04_{-0.69}^{+0.41}$	$- 4 . 52_{- 0.93}^{+ 1.21}$ $-4.52_{-0.93}^{+1.21}$	1.16 (3)
061006	$0 . 151_{- 0.107}^{+ 0.159}$ $0.151_{-0.107}^{+0.159}$	$53 . 02_{- 0.10}^{+ 0.70}$ $53.02_{-0.10}^{+0.70}$	$0 . 373_{- 0.157}^{+ 0.108}$ $0.373_{-0.157}^{+0.108}$	$- 2 . 80_{- 2.78}^{+ 2.40}$ $-2.80_{-2.78}^{+2.40}$	2.14 ± 0.06	$- 1 . 42_{- 0.94}^{+ 0.67}$ $-1.42_{-0.94}^{+0.67}$	$- 4 . 04_{- 1.83}^{+ 1.85}$ $-4.04_{-1.83}^{+1.85}$	6.72 (4)
061201	$0 . 004_{- 0.003}^{+ 0.006}$ $0.004_{-0.003}^{+0.006}$	$50 . 34_{- 0.06}^{+ 0.09}$ $50.34_{-0.06}^{+0.09}$	0.034 ± 0.004	$- 4 . 52_{- 0.22}^{+ 0.18}$ $-4.52_{-0.22}^{+0.18}$	$2 . 32_{- 0.04}^{+ 0.05}$ $2.32_{-0.04}^{+0.05}$	$- 0 . 50_{- 0.04}^{+ 0.02}$ $-0.50_{-0.04}^{+0.02}$	$- 0 . 56_{- 0.14}^{+ 0.06}$ $-0.56_{-0.14}^{+0.06}$	3.77 (11)
070714B	$0 . 003_{- 0.002}^{+ 0.004}$ $0.003_{-0.002}^{+0.004}$	$52 . 54_{- 0.38}^{+ 0.66}$ $52.54_{-0.38}^{+0.66}$	$0 . 018_{- 0.008}^{+ 0.010}$ $0.018_{-0.008}^{+0.010}$	$- 2 . 67_{- 1.29}^{+ 0.90}$ $-2.67_{-1.29}^{+0.90}$	$2 . 34_{- 0.09}^{+ 0.08}$ $2.34_{-0.09}^{+0.08}$	$- 0 . 65_{- 0.26}^{+ 0.13}$ $-0.65_{-0.26}^{+0.13}$	$- 3 . 01_{- 0.74}^{+ 0.97}$ $-3.01_{-0.74}^{+0.97}$	1.88 (10)
070724A	$0 . 008_{- 0.006}^{+ 0.012}$ $0.008_{-0.006}^{+0.012}$	$52 . 96_{- 0.80}^{+ 0.69}$ $52.96_{-0.80}^{+0.69}$	$0 . 066_{- 0.027}^{+ 0.031}$ $0.066_{-0.027}^{+0.031}$	$- 0 . 22_{- 1.87}^{+ 0.91}$ $-0.22_{-1.87}^{+0.91}$	$2 . 02_{- 0.01}^{+ 0.02}$ $2.02_{-0.01}^{+0.02}$	$- 1 . 09_{- 0.75}^{+ 0.44}$ $-1.09_{-0.75}^{+0.44}$	$- 4 . 98_{- 1.20}^{+ 1.31}$ $-4.98_{-1.20}^{+1.31}$	3.97 (2)
071227	$0 . 175_{- 0.125}^{+ 0.167}$ $0.175_{-0.125}^{+0.167}$	$50 . 78_{- 0.47}^{+ 1.93}$ $50.78_{-0.47}^{+1.93}$	$0 . 339_{- 0.164}^{+ 0.130}$ $0.339_{-0.164}^{+0.130}$	$- 2 . 20_{- 0.97}^{+ 1.92}$ $-2.20_{-0.97}^{+1.92}$	$2 . 08_{- 0.06}^{+ 0.13}$ $2.08_{-0.06}^{+0.13}$	$- 0 . 87_{- 1.57}^{+ 0.30}$ $-0.87_{-1.57}^{+0.30}$	$- 1 . 38_{- 1.52}^{+ 0.67}$ $-1.38_{-1.52}^{+0.67}$	2.10 (2)
090510	$0 . 004_{- 0.002}^{+ 0.003}$ $0.004_{-0.002}^{+0.003}$	$52 . 10_{- 0.17}^{+ 0.23}$ $52.10_{-0.17}^{+0.23}$	$0 . 025_{- 0.008}^{+ 0.010}$ $0.025_{-0.008}^{+0.010}$	$- 2 . 22_{- 1.07}^{+ 0.92}$ $-2.22_{-1.07}^{+0.92}$	$2 . 16_{- 0.06}^{+ 0.07}$ $2.16_{-0.06}^{+0.07}$	$- 0 . 65_{- 0.23}^{+ 0.13}$ $-0.65_{-0.23}^{+0.13}$	$- 1 . 70_{- 0.70}^{+ 0.72}$ $-1.70_{-0.70}^{+0.72}$	0.85 (68)
110112A	$0 . 152_{- 0.109}^{+ 0.162}$ $0.152_{-0.109}^{+0.162}$	$51 . 67_{- 0.79}^{+ 1.17}$ $51.67_{-0.79}^{+1.17}$	$0 . 371_{- 0.160}^{+ 0.110}$ $0.371_{-0.160}^{+0.110}$	$- 4 . 49_{- 1.03}^{+ 1.31}$ $-4.49_{-1.03}^{+1.31}$	$2 . 45_{- 0.12}^{+ 0.07}$ $2.45_{-0.12}^{+0.07}$	$- 0 . 70_{- 0.26}^{+ 0.16}$ $-0.70_{-0.26}^{+0.16}$	$- 2 . 13_{- 1.72}^{+ 1.16}$ $-2.13_{-1.72}^{+1.16}$	7.31 (2)
111020A	$0 . 015_{- 0.007}^{+ 0.010}$ $0.015_{-0.007}^{+0.010}$	$52 . 62_{- 0.35}^{+ 0.53}$ $52.62_{-0.35}^{+0.53}$	$0 . 036_{- 0.011}^{+ 0.022}$ $0.036_{-0.011}^{+0.022}$	$- 4 . 70_{- 0.89}^{+ 1.16}$ $-4.70_{-0.89}^{+1.16}$	2.02 ± 0.01	$- 0 . 59_{- 0.16}^{+ 0.09}$ $-0.59_{-0.16}^{+0.09}$	$- 2 . 28_{- 0.90}^{+ 0.80}$ $-2.28_{-0.90}^{+0.80}$	2.61 (10)
111117A	$0 . 101_{- 0.087}^{+ 0.258}$ $0.101_{-0.087}^{+0.258}$	$52 . 49_{- 0.41}^{+ 0.67}$ $52.49_{-0.41}^{+0.67}$	$0 . 108_{- 0.088}^{+ 0.258}$ $0.108_{-0.088}^{+0.258}$	$- 2 . 12_{- 1.89}^{+ 1.39}$ $-2.12_{-1.89}^{+1.39}$	$2 . 39_{- 0.12}^{+ 0.09}$ $2.39_{-0.12}^{+0.09}$	$- 0 . 64_{- 0.26}^{+ 0.12}$ $-0.64_{-0.26}^{+0.12}$	$- 3 . 40_{- 1.08}^{+ 1.39}$ $-3.40_{-1.08}^{+1.39}$	5.54 (4)
160821B	$0 . 127_{- 0.092}^{+ 0.132}$ $0.127_{-0.092}^{+0.132}$	$50 . 46_{- 0.03}^{+ 0.04}$ $50.46_{-0.03}^{+0.04}$	$0 . 397_{- 0.130}^{+ 0.090}$ $0.397_{-0.130}^{+0.090}$	$- 5 . 97_{- 0.02}^{+ 0.05}$ $-5.97_{-0.02}^{+0.05}$	2.39 ± 0.01	$- 0 . 48_{- 0.007}^{+ 0.003}$ $-0.48_{-0.007}^{+0.003}$	$- 0 . 51_{- 0.06}^{+ 0.03}$ $-0.51_{-0.06}^{+0.03}$	4.21 (23)

Notes. Reported are the median and 16th, 84th percentile values of the posterior distributions of the jet parameters of each GRB in the sample, as well as the fit statistic reduced by the number of degrees of freedom (d.o.f) corresponding to the maximum a posteriori (MAP) parameter set.

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