Identifying potential binary neutron star merger events from the Fermi GBM Gamma-Ray Burst Catalog

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Volume 701 (September 2025)

A&A, 701 (2025) A83

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Table 6.

Properties of the reference GRBs and the most promising candidates identified by the clustering procedure.

	$t_{90}^{a}$ $t_{90}^{a}$	Fluence^a	$E_{peak}^{a}$ $E_{\mathrm{peak}}^{a}$	$t_{90}^{b}$ $t_{90}^{b}$	Fluence^b	$E_{peak}^{b}$ $E_{\mathrm{peak}}^{b}$	Redshift	Distance^e
	(s)	(10⁻⁷ erg/cm²)	(keV)	(s)	10⁻⁷ erg/cm²	(ph/cm²/sec)		(Mpc)
080905A	0.96 ± 0.35	8.50 ± 0.46	317.17 ± 52.54	1	1.4 ± 0.2	1.3 ± 0.2	0.122	524.86
090510	0.96 ± 0.14	33.7 ± 0.41	4248.14 ± 440.05	0.3	3.4 ± 0.4	9.7 ± 1.1	0.903	3147.53
090927	0.512 ± 0.231	3.03 ± 0.18	195.22 ± 69.05	2.2	2.0 ± 0.3	2.0 ± 0.3	1.37	4224.11
131004A	1.15 ± 0.59	5.10 ± 0.19	118.12 ± 24.42	1.54	2.8 ± 0.2	3.4 ± 0.2	0.71	26608.86
150101B	0.48 ± 0.10	0.76 ± 0.11	208.18 ± 109.55	0.02	0.23 ± 0.06	–	0.134	574.32
170817A	2.48 ± 0.47	2.79 ± 0.17	214.70 ± 56.59	–	–	–	0.009	39.79
160821B	1.09 ± 0.98	1.95 ± 0.2	38.17 ± 27.48	0.48	1.0 ± 0.1	1.7 ± 0.2	0.161	685.88
191031D	0.25 ± 0.02	39.68 ± 0.15	681.54 ± 32.55	0.29	4.1 ± 0.4	4.3 ± 0.4	0.5^c	1946.42
210323A	0.96 ± 0.78	10.92 ± 0.30	1440.78 ± 339.89	1.12	2.4 ± 0.3	2.9 ± 0.3	0.733^d	2676.40

Notes. Measurements are indicated as follows: ^afor values obtained from Fermi GBM, ^bfor values from Swift/BAT, ^c for the photometric redshift from (O’Connor et al. 2022) and ^d for the photometric redshift from Nugent et al. (2024). The distances, denoted by ^e, are derived using the Planck18 cosmology module from astropy.

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