Gamma-ray burst prompt emission spectra at high energies

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Table 2.

Properties of GRBs in Sample-2.

GRB	Time–T₀	z	$T_{90}^{GBM}$ $T^{\mathrm{GBM}}_{90}$ [s]	LLE	p_index	ν_c	ν_m	Flux (×10⁻⁶)	E_max
GRB	[s]	z	$T_{90}^{GBM}$ $T^{\mathrm{GBM}}_{90}$ [s]	LLE	p_index	[keV]	[MeV]	[erg cm⁻² s⁻¹]	[GeV]
GRB 091031A	0.0–6.4	✗	33.9	✓	$3 . 08_{- 0.23}^{+ 0.37}$ $3.08_{-0.23}^{+0.37}$	$117_{- 26}^{+ 60}$ $117_{-26}^{+60}$	> 0.2	$4 . 90_{- 1.89}^{+ 0.08}$ $4.90_{-1.89}^{+0.08}$	0.3
GRB 091003A	0.0–21.1	0.8969	20.2	✗	$4 . 13_{- 0.39}^{+ 0.49}$ $4.13_{-0.39}^{+0.49}$	$82_{- 7}^{+ 7}$ $82_{-7}^{+7}$	$0 . 61_{- 0.12}^{+ 0.14}$ $0.61_{-0.12}^{+0.14}$	< 3.5	2.7
GRB 090323^*	0.0–130.0	3.57	133.9	✓	$3 . 22_{- 0.14}^{+ 0.04}$ $3.22^{+0.04}_{-0.14}$	$42_{+ 1.8}^{- 1.6}$ $42^{-1.6}_{+1.8}$	$1 . 18_{+ 0.09}^{- 0.22}$ $1.18^{-0.22}_{+0.09}$	$1 . 73_{- 0.06}^{+ 0.04}$ $1.73_{-0.06}^{+0.04}$	0.4
GRB 100724A	40.7–79.1	1.288	114.7	✓	$2 . 99_{- 0.19}^{+ 0.25}$ $2.99_{-0.19}^{+0.25}$	$37_{- 5}^{+ 7}$ $37_{-5}^{+7}$	$0 . 76_{- 0.29}^{+ 0.47}$ $0.76_{-0.29}^{+0.47}$	$1 . 02_{- 0.79}^{+ 0.38}$ $1.02_{-0.79}^{+0.38}$	0.2
GRB 110721A	0.0–1.4	✗	21.8	✓	$2 . 09_{- 0.06}^{+ 0.08}$ $2.09_{-0.06}^{+0.08}$	$27_{- 3}^{+ 3}$ $27_{-3}^{+3}$	$0 . 61_{- 0.16}^{+ 0.25}$ $0.61_{-0.16}^{+0.25}$	$3 . 44_{- 2.97}^{+ 0.23}$ $3.44_{-2.97}^{+0.23}$	1.0
GRB 120107A	0.0–23.1	✗	23.0	✗	$3 . 86_{- 0.67}^{+ 0.75}$ $3.86_{-0.67}^{+0.75}$	$24_{- 5}^{+ 7}$ $24_{-5}^{+7}$	$0 . 76_{- 0.30}^{+ 0.51}$ $0.76_{-0.30}^{+0.51}$	$4 . 48_{- 3.92}^{+ 3.95}$ $4.48_{-3.92}^{+3.95}$	1.9
GRB 120709A	0.0–11.0	✗	27.3	✗	$3 . 55_{- 0.55}^{+ 0.81}$ $3.55_{-0.55}^{+0.81}$	$45_{- 12}^{+ 20}$ $45_{-12}^{+20}$	> 0.9	< 14.1	2.2
GRB 130327B	0.0–28.4	✗	31.2	✗	$4 . 48_{- 0.53}^{+ 0.38}$ $4.48_{-0.53}^{+0.38}$	$224_{- 40}^{+ 196}$ $224_{-40}^{+196}$	$0 . 24_{- 0.04}^{+ 0.13}$ $0.24_{-0.04}^{+0.13}$	< 9.75	4.6
GRB 140206B	0.0–24.8	✗	146.7	✗	$2 . 79_{- 0.15}^{+ 0.26}$ $2.79_{-0.15}^{+0.26}$	$14_{- 1}^{+ 1}$ $14_{-1}^{+1}$	$0 . 24_{- 0.04}^{+ 0.04}$ $0.24_{-0.04}^{+0.04}$	$1 . 35_{- 1.05}^{+ 0.94}$ $1.35_{-1.05}^{+0.94}$	0.8
GRB 140523A	0.0–15.0	✗	19.2	✗	$3 . 89_{- 0.41}^{+ 0.58}$ $3.89_{-0.41}^{+0.58}$	$37_{- 6}^{+ 36}$ $37_{-6}^{+36}$	$0 . 06_{- 0.02}^{+ 0.04}$ $0.06_{-0.02}^{+0.04}$	< 10	2.4
GRB 141028A	0.0–18.0	2.33	31.5	✓	$4 . 45_{- 0.54}^{+ 0.38}$ $4.45_{-0.54}^{+0.38}$	$29_{- 8}^{+ 10}$ $29_{-8}^{+10}$	$12 . 22_{- 3.15}^{+ 2.73}$ $12.22_{-3.15}^{+2.73}$	$7 . 94_{- 0.79}^{+ 1.46}$ $7.94_{-0.79}^{+1.46}$	0.3
GRB150523A	0.0–34.9	✗	82.4	✓	$3 . 43_{- 0.98}^{+ 1.00}$ $3.43_{-0.98}^{+1.00}$	$392_{- 58}^{+ 123}$ $392_{-58}^{+123}$	> 1.6	$1 . 41_{- 0.09}^{+ 0.04}$ $1.41^{+0.04}_{-0.09}$	1.6
GRB 160816A	0.0–8.5	✗	11.1	✓	$4 . 25_{- 0.41}^{+ 0.53}$ $4.25_{-0.41}^{+0.53}$	$141_{- 12}^{+ 49}$ $141_{-12}^{+49}$	$0 . 15_{- 0.01}^{+ 0.03}$ $0.15_{-0.01}^{+0.03}$	$4 . 03_{- 3.25}^{+ 0.71}$ $4.03_{-3.25}^{+0.71}$	1.1
GRB 160905A	0.0–37.4	✗	33.5	✓	$4 . 41_{- 0.35}^{+ 0.33}$ $4.41_{-0.35}^{+0.33}$	> 330	> 0.4	$4 . 03_{- 3.25}^{+ 0.71}$ $4.03_{-3.25}^{+0.71}$	2.2
GRB 170115B	0.0–8.2	✗	44.3	✓	$4 . 96_{- 0.06}^{+ 0.03}$ $4.96_{-0.06}^{+0.03}$	$1018_{- 49}^{+ 238}$ $1018_{-49}^{+238}$	$1 . 07_{- 0.07}^{+ 0.15}$ $1.07_{-0.07}^{+0.15}$	< 6.21	0.6
GRB 171210A	0.0–146.7	✗	143.1	✗	$4 . 52_{- 0.34}^{+ 0.33}$ $4.52_{-0.34}^{+0.33}$	$87_{- 9}^{+ 68}$ $87_{-9}^{+68}$	$0 . 10_{- 0.01}^{+ 0.03}$ $0.10_{-0.01}^{+0.03}$	$5 . 44_{- 2.45}^{+ 1.77}$ $5.44_{-2.45}^{+1.77}$	0.7
GRB 180703A	0.0–22.3	0.6678	20.7	✗	$4 . 40_{- 0.48}^{+ 0.40}$ $4.40_{-0.48}^{+0.40}$	$97_{- 9}^{+ 11}$ $97_{-9}^{+11}$	$1 . 42_{- 0.38}^{+ 0.50}$ $1.42_{-0.38}^{+0.50}$	$1 . 59_{- 1.20}^{+ 1.38}$ $1.59_{-1.20}^{+1.38}$	0.2
GRB 181020A	0.0–15.6	2.938	15.1	✗	$3 . 77_{- 0.31}^{+ 0.63}$ $3.77_{-0.31}^{+0.63}$	> 200	$0 . 29_{- 0.06}^{+ 0.22}$ $0.29_{-0.06}^{+0.22}$	$3 . 00_{- 2.36}^{+ 2.03}$ $3.00_{-2.36}^{+2.03}$	0.3
GRB 190511A	0.0–30.2	✗	27.6	✗	$4 . 67_{- 0.43}^{+ 0.24}$ $4.67_{-0.43}^{+0.24}$	$110_{- 13}^{+ 69}$ $110_{-13}^{+69}$	$0 . 11_{- 0.01}^{+ 0.04}$ $0.11_{-0.01}^{+0.04}$	$7 . 58_{- 7.57}^{+ 2.19}$ $7.58_{-7.57}^{+2.19}$	0.8
GRB 210410A	0.0–1.8	✗	48.1	✗	$4 . 86_{- 0.20}^{+ 0.10}$ $4.86_{-0.20}^{+0.10}$	$850_{- 83}^{+ 315}$ $850_{-83}^{+315}$	$0 . 87_{- 0.08}^{+ 0.19}$ $0.87_{-0.08}^{+0.19}$	$3 . 76_{- 3.76}^{+ 2.23}$ $3.76_{-3.76}^{+2.23}$	0.4
GRB 210928A	0.0–19.8	✗	23.8	✗	$4 . 58_{- 0.50}^{+ 0.30}$ $4.58_{-0.50}^{+0.30}$	$178_{- 27}^{+ 121}$ $178_{-27}^{+121}$	$0 . 18_{- 0.02}^{+ 0.08}$ $0.18_{-0.02}^{+0.08}$	$4 . 03_{- 3.25}^{+ 0.71}$ $4.03_{-3.25}^{+0.71}$	0.1
GRB 211018A	0.0–39.1	✗	123.9	✗	$3 . 58_{- 0.86}^{+ 0.92}$ $3.58_{-0.86}^{+0.92}$	$41_{- 4}^{+ 6}$ $41_{-4}^{+6}$	$0 . 48_{- 0.16}^{+ 0.18}$ $0.48_{-0.16}^{+0.18}$	< 4.74	3.3
GRB 220101A	0.0–105.9	4.618	128.3	✗	$3 . 73_{- 0.26}^{+ 0.41}$ $3.73_{-0.26}^{+0.41}$	$58_{- 6}^{+ 7}$ $58_{-6}^{+7}$	$0 . 53_{- 0.13}^{+ 0.17}$ $0.53_{-0.13}^{+0.17}$	$8 . 25_{- 3.04}^{+ 0.99}$ $8.25_{-3.04}^{+0.99}$	0.6

Notes. The table shows the relative time bins analyzed, redshift (if available), $T_{90}^{GBM}$ $T_{90}^{\text{GBM}}$ , availability of LLE data, and parameters derived from spectral analysis: spectral index (p_index), synchrotron frequencies (ν_c, ν_m), bolometric flux, and the highest energy photon detected by Fermi/LAT. GRBs marked with indicate the requirement for a high-energy cutoff.

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