Composite periodogram analysis for low-event-count fast radio burst repeaters

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Table 2

Properties of FRB sample with its evaluated values.

Properties					Evaluated

Name	RA (deg)	Dec (deg)	Exposure (h)(1)	n	P(d)	Pcc	χ2	F0	τ (d)	D
FRB20180910A	352.77 ± 0.18	88.21 ± 0.21	${2260.624}_{- 237.284}^{+ 300.371}$ $2260.624_{ - 237.284}^{ + 300.371}$	3	376.77	0.396	1.76	0.69	649	0.861
FRB20181226F	${95.87}_{- 0.31}^{+ 0.23}$ $95.87_{ - 0.31}^{ + 0.23}$	${83.80}_{- 0.16}^{+ 0.47}$ $83.80_{ - 0.16}^{ + 0.47}$	${918.658}_{- 23.019}^{+ 75.069}$ $918.658_{ - 23.019}^{ + 75.069}$	3	344.5	0.163	1.64	0.86	686	0.996
FRB20190110C	246.98 ± 0.19	41.420 ± 0.050	9.367 ± 0.007	3	50.09	0.090	3.74	0.97	801	7.996
FRB20190226B	273.57 ± 0.23	61.81 ± 0.25	${138.774}_{- 1.119}^{+ 1.140}$ $138.774_{ - 1.119}^{ + 1.140}$	3	291.04	0.141	1.92	0.86	585	1.005
FRB20190430C	277.22 ± 0.23	24.92 ± 0.22	${71.896}_{- 0.128}^{+ 0.129}$ $71.896_{ - 0.128}^{ + 0.129}$	3	179.74	0.056	3.06	0.97	180	0.501
FRB20190609C	73.17 ± 0.01	24.068 ± 0.006	72.076 ± 0.003	3	73.08	0.070	2.11	0.94	583	3.989
FRB20190804E	261.34 ± 0.02	55.069 ± 0.008	90.140 ± 0.018	6	168.39	0.015	1.68	0.83	512	0.608
FRB20190915D	11.78 ± 0.03	46.86 ± 0.02	92.950 ± 0.035	5	13.94	0.045	2.09	0.83	180	3.228
FRB20191106C	199.58 ± 0.01	43.002 ± 0.009	75.783 ± 0.011	7	32.93	0.096	1.40	0.67	495	2.505
FRB20191114A	273.57 ± 0.03	19.80 ± 0.04	59.992 ± 0.015	3	14.16	0.092	1.50	0.94	212	7.483
FRB20200223B	8.265 ± 0.008	28.831 ± 0.007	13.174 ± 0.001	5	25.14	0.036	1.80	0.83	328	3.262
FRB20200619A	272.6 ± 0.1	55.56 ± 0.06	${105.942}_{- 0.161}^{+ 0.162}$ $105.942_{ - 0.161}^{ + 0.162}$	5	32.67	0.192	1.28	0.75	225	1.722
FRB20200809E	20.0 ± 0.1	82.89 ± 0.02	${920.915}_{- 2.570}^{+ 2.584}$ $920.915_{ - 2.570}^{ + 2.584}$	4	86.34	0.277	1.54	0.67	182	0.703
FRB20200926A	${283.28}_{- 0.20}^{+ 0.18}$ $283.28_{ - 0.20}^{ + 0.18}$	${53.95}_{- 0.31}^{+ 0.30}$ $53.95_{ - 0.31}^{ + 0.30}$	${110.955}_{- 0.817}^{+ 0.805}$ $110.955_{ - 0.817}^{ + 0.805}$	3	87.84	0.142	1.59	0.86	88	0.501
FRB20200929C	17.04 ± 0.02	18.47 ± 0.01	18.083 ± 0.001	7	89.23	0.088	1.60	0.61	178	0.332
FRB20201130A	64.39 ± 0.01	7.94 ± 0.01	25.612 ± 0.001	12	11.38	0.043	1.39	0.56	127	1.014
FRB20201221B	124.20 ± 0.03	48.78 ± 0.02	44.080 ± 0.018	6	71.02	0.026	2.02	0.75	81	0.228

Notes. Repeaters with P_cc ≤ 0.050 are in bold. n = event count, P = trial period, F₀ = inactivity fraction, τ = event window, and D = average days between events relative to the chosen period, evaluated using Eq. (9). ⁽¹⁾The uncertainty in exposure is calculated using Eq. (5).

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