Timing and spectral variability in 2S 1417–624 observed with Insight-HXMT

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Volume 699 (July 2025)

A&A, 699 (2025) A58

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Table A.1.

Observation IDs as well as the best-fitting spectral parameters from Insight-HXMT during the 2021 outburst.

ObsID	Time Start [UTC]	Exposure time [s]	MJD	Flux (10⁻⁹ erg s⁻¹ cm⁻¹)	Γ	E_cut	χ²/dof
ObsID	Time Start [UTC]	(HE/ME/LE)	MJD	Flux (10⁻⁹ erg s⁻¹ cm⁻¹)	Γ	E_cut	χ²/dof

P0304059001	2021-01-29	1820/3420/1029	59243.17	–	–	–	–
P0304059002	2021-01-30	468/2040/721	59244.38	$1 . 79_{- 0.01}^{+ 0.02}$ $1.79_{-0.01}^{+0.02}$	$0 . 18_{- 0.05}^{+ 0.07}$ $0.18_{-0.05}^{+0.07}$	$12 . 50_{- 0.50}^{+ 1.15}$ $12.50_{-0.50}^{+1.15}$	714/786
P0304059003	2021-01-31	2726/3270/1348	59245.24	$2 . 20_{- 0.01}^{+ 0.01}$ $2.20_{-0.01}^{+0.01}$	$0 . 26_{- 0.00}^{+ 0.12}$ $0.26_{-0.00}^{+0.12}$	$13 . 28_{- 0.00}^{+ 2.03}$ $13.28_{-0.00}^{+2.03}$	881/1068
P0304059004	2021-02-01	1069/2310/585	59246.30	$2 . 00_{- 0.01}^{+ 0.04}$ $2.00_{-0.01}^{+0.04}$	$0 . 40_{- 0.09}^{+ 0.03}$ $0.40_{-0.09}^{+0.03}$	$15 . 56_{- 1.06}^{+ 1.04}$ $15.56_{-1.06}^{+1.04}$	611/725
P0304059005	2021-02-02	2535/3269/1197	59247.16	$2 . 20_{- 0.01}^{+ 0.01}$ $2.20_{-0.01}^{+0.01}$	$0 . 36_{- 0.06}^{+ 0.05}$ $0.36_{-0.06}^{+0.05}$	$15 . 14_{- 0.79}^{+ 0.89}$ $15.14_{-0.79}^{+0.89}$	938/986
P0304059006	2021-02-03	2830/3210/1380	59248.16	$2 . 15_{- 0.01}^{+ 0.02}$ $2.15_{-0.01}^{+0.02}$	$0 . 32_{- 0.04}^{+ 0.05}$ $0.32_{-0.04}^{+0.05}$	$14 . 34_{- 0.38}^{+ 0.91}$ $14.34_{-0.38}^{+0.91}$	825/1041
P0304059007	2021-02-04	1282/2520/554	59249.22	$2 . 21_{- 0.01}^{+ 0.02}$ $2.21_{-0.01}^{+0.02}$	$0 . 37_{- 0.04}^{+ 0.05}$ $0.37_{-0.04}^{+0.05}$	$15 . 48_{- 0.42}^{+ 1.28}$ $15.48_{-0.42}^{+1.28}$	611/713
P0304059008	2021-02-05	1195/2459/467	59250.21	$2 . 01_{- 0.01}^{+ 0.03}$ $2.01_{-0.01}^{+0.03}$	$0 . 42_{- 0.07}^{+ 0.05}$ $0.42_{-0.07}^{+0.05}$	$16 . 54_{- 0.74}^{+ 1.29}$ $16.54_{-0.74}^{+1.29}$	564/656
P0304059009	2021-02-06	1177/2310/920	59251.20	$2 . 25_{- 0.01}^{+ 0.03}$ $2.25_{-0.01}^{+0.03}$	$0 . 56_{- 0.05}^{+ 0.03}$ $0.56_{-0.05}^{+0.03}$	$21 . 15_{- 1.07}^{+ 1.37}$ $21.15_{-1.07}^{+1.37}$	722/838
P0304059010	2021-02-07	1396/2040/538	59252.31	$1 . 95_{- 0.01}^{+ 0.02}$ $1.95_{-0.01}^{+0.02}$	$0 . 32_{- 0.06}^{+ 0.05}$ $0.32_{-0.06}^{+0.05}$	$14 . 32_{- 0.63}^{+ 0.95}$ $14.32_{-0.63}^{+0.95}$	566/695
P0304059011	2021-02-08	1002/2100/897	59253.17	$2 . 10_{- 0.01}^{+ 0.03}$ $2.10_{-0.01}^{+0.03}$	$0 . 29_{- 0.03}^{+ 0.09}$ $0.29_{-0.03}^{+0.09}$	$14 . 44_{- 0.08}^{+ 1.83}$ $14.44_{-0.08}^{+1.83}$	684/837
P0304059012	2021-02-09	3138/2609/1915	59254.36	$2 . 21_{- 0.01}^{+ 0.02}$ $2.21_{-0.01}^{+0.02}$	$0 . 40_{- 0.06}^{+ 0.02}$ $0.40_{-0.06}^{+0.02}$	$16 . 70_{- 0.88}^{+ 0.55}$ $16.70_{-0.88}^{+0.55}$	976/1165
P0304059013	2021-02-10	989/2550/1382	59255.24	$2 . 24_{- 0.01}^{+ 0.02}$ $2.24_{-0.01}^{+0.02}$	$0 . 30_{- 0.04}^{+ 0.03}$ $0.30_{-0.04}^{+0.03}$	$15 . 31_{- 0.51}^{+ 0.89}$ $15.31_{-0.51}^{+0.89}$	878/1042
P0304059014	2021-02-10	2333/3120/1431	59256.07	$2 . 21_{- 0.01}^{+ 0.02}$ $2.21_{-0.01}^{+0.02}$	$0 . 24_{- 0.04}^{+ 0.05}$ $0.24_{-0.04}^{+0.05}$	$14 . 00_{- 0.37}^{+ 0.88}$ $14.00_{-0.37}^{+0.88}$	869/1054
P0304059015	2021-02-12	749/3630/1589	59257.16	$2 . 11_{- 0.01}^{+ 0.01}$ $2.11_{-0.01}^{+0.01}$	$0 . 25_{- 0.02}^{+ 0.06}$ $0.25_{-0.02}^{+0.06}$	$13 . 82_{- 0.20}^{+ 1.28}$ $13.82_{-0.20}^{+1.28}$	844/1101
P0304059016	2021-02-13	4365/4260/2034	59258.35	$2 . 23_{- 0.01}^{+ 0.02}$ $2.23_{-0.01}^{+0.02}$	$0 . 29_{- 0.02}^{+ 0.04}$ $0.29_{-0.02}^{+0.04}$	$14 . 79_{- 0.19}^{+ 0.74}$ $14.79_{-0.19}^{+0.74}$	1007/1197
P0304059017	2021-02-14	2956/4260/1537	59259.21	$2 . 39_{- 0.03}^{+ 0.04}$ $2.39_{-0.03}^{+0.04}$	$0 . 34_{- 0.03}^{+ 0.03}$ $0.34_{-0.03}^{+0.03}$	$15 . 82_{- 0.31}^{+ 0.75}$ $15.82_{-0.31}^{+0.75}$	932/1099
P0304059018	2021-02-16	5932/6869/1587	59261.93	$2 . 13_{- 0.03}^{+ 0.04}$ $2.13_{-0.03}^{+0.04}$	$0 . 34_{- 0.03}^{+ 0.02}$ $0.34_{-0.03}^{+0.02}$	$15 . 51_{- 0.41}^{+ 0.43}$ $15.51_{-0.41}^{+0.43}$	1014/1094
P0304059019	2021-02-17	2159/6390/1570	59263.06	$2 . 29_{- 0.02}^{+ 0.03}$ $2.29_{-0.02}^{+0.03}$	$0 . 37_{- 0.03}^{+ 0.03}$ $0.37_{-0.03}^{+0.03}$	$16 . 78_{- 0.42}^{+ 0.70}$ $16.78_{-0.42}^{+0.70}$	1013/1099
P0304059020	2021-02-18	2974/6750/957	59263.98	$2 . 10_{- 0.02}^{+ 0.03}$ $2.10_{-0.02}^{+0.03}$	$0 . 29_{- 0.04}^{+ 0.02}$ $0.29_{-0.04}^{+0.02}$	$14 . 66_{- 0.55}^{+ 0.41}$ $14.66_{-0.55}^{+0.41}$	891/871
P0304059021	2021-02-19	1348/6180/724	59265.05	–	–	–	–
P0304059022	2021-02-20	4785/6929/1256	59265.90	$2 . 08_{- 0.01}^{+ 0.02}$ $2.08_{-0.01}^{+0.02}$	$0 . 34_{- 0.03}^{+ 0.03}$ $0.34_{-0.03}^{+0.03}$	$14 . 70_{- 0.40}^{+ 0.43}$ $14.70_{-0.40}^{+0.43}$	910/1004
P0304059023	2021-02-21	2134/5520/882	59267.04	$2 . 01_{- 0.02}^{+ 0.04}$ $2.01_{-0.02}^{+0.04}$	$0 . 37_{- 0.04}^{+ 0.03}$ $0.37_{-0.04}^{+0.03}$	$15 . 65_{- 0.63}^{+ 0.67}$ $15.65_{-0.63}^{+0.67}$	727/821
P0304059024	2021-02-22	2375/4920/415	59268.04	$1 . 85_{- 0.02}^{+ 0.04}$ $1.85_{-0.02}^{+0.04}$	$0 . 32_{- 0.05}^{+ 0.04}$ $0.32_{-0.05}^{+0.04}$	$14 . 25_{- 0.57}^{+ 0.64}$ $14.25_{-0.57}^{+0.64}$	529/654
P0304059025	2021-02-23	2791/5580/1794	59269.03	$1 . 95_{- 0.01}^{+ 0.02}$ $1.95_{-0.01}^{+0.02}$	$0 . 50_{- 0.04}^{+ 0.02}$ $0.50_{-0.04}^{+0.02}$	$18 . 16_{- 0.85}^{+ 0.66}$ $18.16_{-0.85}^{+0.66}$	1068/1142
P0304059026	2021-02-25	5832/6029/2762	59270.16	$1 . 97_{- 0.01}^{+ 0.01}$ $1.97_{-0.01}^{+0.01}$	$0 . 46_{- 0.03}^{+ 0.02}$ $0.46_{-0.03}^{+0.02}$	$17 . 53_{- 0.41}^{+ 0.63}$ $17.53_{-0.41}^{+0.63}$	1179/1278
P0304059027	2021-02-25	3819/5699/837	59271.02	$1 . 65_{- 0.01}^{+ 0.02}$ $1.65_{-0.01}^{+0.02}$	$0 . 40_{- 0.06}^{+ 0.02}$ $0.40_{-0.06}^{+0.02}$	$15 . 65_{- 0.88}^{+ 0.40}$ $15.65_{-0.88}^{+0.40}$	731/763
P0304059028	2021-02-26	1885/3450/1915	59271.60	$2 . 00_{- 0.01}^{+ 0.01}$ $2.00_{-0.01}^{+0.01}$	$0 . 51_{- 0.04}^{+ 0.03}$ $0.51_{-0.04}^{+0.03}$	$17 . 85_{- 0.73}^{+ 1.12}$ $17.85_{-0.73}^{+1.12}$	988/1155
P0304059032	2021-02-28	4835/4649/2480	59273.20	$1 . 59_{- 0.01}^{+ 0.01}$ $1.59_{-0.01}^{+0.01}$	$0 . 38_{- 0.03}^{+ 0.03}$ $0.38_{-0.03}^{+0.03}$	$15 . 40_{- 0.50}^{+ 0.65}$ $15.40_{-0.50}^{+0.65}$	1084/1202
P0304059033	2021-02-28	5396/5610/3011	59274.06	$1 . 50_{- 0.01}^{+ 0.01}$ $1.50_{-0.01}^{+0.01}$	$0 . 40_{- 0.04}^{+ 0.04}$ $0.40_{-0.04}^{+0.04}$	$14 . 33_{- 0.52}^{+ 0.72}$ $14.33_{-0.52}^{+0.72}$	971/1280
P0304059034	2021-03-01	4693/5490/2656	59275.05	$1 . 67_{- 0.01}^{+ 0.01}$ $1.67_{-0.01}^{+0.01}$	$0 . 52_{- 0.04}^{+ 0.02}$ $0.52_{-0.04}^{+0.02}$	$18 . 74_{- 0.80}^{+ 0.66}$ $18.74_{-0.80}^{+0.66}$	1114/1227
P0304059035	2021-03-02	5188/5400/2659	59276.05	$1 . 47_{- 0.02}^{+ 0.03}$ $1.47_{-0.02}^{+0.03}$	$0 . 59_{- 0.07}^{+ 0.01}$ $0.59_{-0.07}^{+0.01}$	$20 . 25_{- 1.45}^{+ 0.38}$ $20.25_{-1.45}^{+0.38}$	1047/1226
P0304059036	2021-03-04	4086/3930/2513	59277.17	$1 . 37_{- 0.01}^{+ 0.01}$ $1.37_{-0.01}^{+0.01}$	$0 . 47_{- 0.07}^{+ 0.02}$ $0.47_{-0.07}^{+0.02}$	$15 . 83_{- 1.04}^{+ 0.60}$ $15.83_{-1.04}^{+0.60}$	984/1200
P0304059037	2021-03-04	5234/5370/2811	59278.03	–	–	–	–
P0304059038	2021-03-05	5461/6990/3897	59278.93	$1 . 16_{- 0.01}^{+ 0.02}$ $1.16_{-0.01}^{+0.02}$	$0 . 48_{- 0.04}^{+ 0.03}$ $0.48_{-0.04}^{+0.03}$	$15 . 99_{- 0.72}^{+ 0.88}$ $15.99_{-0.72}^{+0.88}$	1060/1320
P0304059039	2021-03-06	5346/5460/2742	59279.95	$1 . 07_{- 0.01}^{+ 0.01}$ $1.07_{-0.01}^{+0.01}$	$0 . 38_{- 0.02}^{+ 0.08}$ $0.38_{-0.02}^{+0.08}$	$13 . 55_{- 0.09}^{+ 1.54}$ $13.55_{-0.09}^{+1.54}$	995/1233
P0304059040	2021-03-07	2377/4890/3451	59280.81	$1 . 10_{- 0.01}^{+ 0.01}$ $1.10_{-0.01}^{+0.01}$	$0 . 39_{- 0.08}^{+ 0.04}$ $0.39_{-0.08}^{+0.04}$	$13 . 89_{- 0.63}^{+ 1.08}$ $13.89_{-0.63}^{+1.08}$	899/1303
P0304059041	2021-03-08	4325/4260/3819	59281.53	–	–	–	–
P0304059042	2021-03-09	4548/4140/3471	59282.52	$1 . 11_{- 0.02}^{+ 0.01}$ $1.11_{-0.02}^{+0.01}$	$0 . 49_{- 0.02}^{+ 0.06}$ $0.49_{-0.02}^{+0.06}$	$14 . 04_{- 0.33}^{+ 1.21}$ $14.04_{-0.33}^{+1.21}$	1117/1327
P0304059043	2021-03-10	4609/4020/2682	59283.52	$1 . 02_{- 0.01}^{+ 0.01}$ $1.02_{-0.01}^{+0.01}$	$0 . 58_{- 0.05}^{+ 0.06}$ $0.58_{-0.05}^{+0.06}$	$20 . 54_{- 0.86}^{+ 2.42}$ $20.54_{-0.86}^{+2.42}$	921/1156
P0304059044	2021-03-11	2724/2760/1227	59284.87	$0 . 84_{- 0.01}^{+ 0.02}$ $0.84_{-0.01}^{+0.02}$	$0 . 59_{- 0.08}^{+ 0.07}$ $0.59_{-0.08}^{+0.07}$	$17 . 80_{- 1.46}^{+ 2.30}$ $17.80_{-1.46}^{+2.30}$	731/856
P0304059045	2021-03-12	4814/4920/2796	59285.91	$0 . 75_{- 0.01}^{+ 0.01}$ $0.75_{-0.01}^{+0.01}$	$0 . 44_{- 0.06}^{+ 0.04}$ $0.44_{-0.06}^{+0.04}$	$13 . 65_{- 0.77}^{+ 1.17}$ $13.65_{-0.77}^{+1.17}$	916/1205
P0304059046	2021-03-14	2459/3300/1855	59287.36	$0 . 80_{- 0.01}^{+ 0.01}$ $0.80_{-0.01}^{+0.01}$	$0 . 46_{- 0.09}^{+ 0.10}$ $0.46_{-0.09}^{+0.10}$	$17 . 91_{- 1.68}^{+ 2.73}$ $17.91_{-1.68}^{+2.73}$	929/1015

Notes. The observations P0304059001, P0304059021, P0304059037, and P0304059041 do not yield an acceptable fit.

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