2024RAA....24b5013W

Query : 2024RAA....24b5013W

2024RAA....24b5013W - Research in Astron. and astroph., 24, part no 2, 5013 (2024/February-0)

Analysis of Bright Source Hardness Ratios in the 4 yr Insight-HXMT Galactic Plane Scanning Survey Catalog.

WANG C., LIAO J.-Y., GUAN J., LIU Y., LI C.-K., SAI N., JIN J. and ZHANG S.-N.

Abstract (from CDS):

We conduct a statistical analysis of the hardness ratio (HR) for bright sources in the 4 yr Galactic Plane Scanning Survey catalog of Insight-HXMT. Depending on the stable (variable) flux Fs (Fv) or spectrum Ss(Sv) of each source, the bright sources are classified into three groups: Fv&Sv, Fv&Ss, and Fs&Ss. Our study of the HR characteristics in different types of sources reveals that accretion-powered neutron star (NS) low-mass X-ray binaries (LMXBs) exhibit softer energy spectra than NS high-mass X-ray binaries (HMXBs), but harder energy spectra than black hole binaries in most cases. This difference is probably due to their different magnetic field strengths. Additionally, Fv&Sv LMXBs tend to be harder than Fv&Ss LMXBs below 7 keV, while the opposite is true for HMXBs. Our results suggest that LMXBs may dominate unclassified sources, and NS binaries are likely to be the primary type of X-ray binaries with ambiguous compact stars. By comparing the HR of transient sources in their outburst and low-flux states, it is found that the averaged HR of four sources in the two states are roughly comparable within uncertainties. We also investigate the spatial properties of the three groups and find that Fv&Sv sources are mainly located in the longitude of -20° < l < 9°, Fv&Ss sources cross the Galactic Plane, and Fs&Ss sources are predominantly concentrated in 19° < l < 42°. In addition, analyzing the HR spatial distributions shows the absorption of soft X-rays (primarily below 2 keV) in the Galactic Plane.

Abstract Copyright: © 2024. National Astronomical Observatories

Journal keyword(s): catalogs - surveys - methods: data analysis - X-rays: general

Simbad objects: 95

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Number of rows : 95
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * gam Cas HXB 00 56 42.5310945 +60 43 00.264089 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1253 0
2 V* V662 Cas HXB 01 18 02.6976641952 +65 17 29.829200388 12.27 11.99 11.14 10.33 9.58 B1Iae 289 0
3 SWIFT J0243.6+6124 HXB 02 43 40.4252869512 +61 26 03.757456824   13.71 12.84 12.57   O9.5Ve 208 0
4 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
5 HD 245770 HXB 05 38 54.5748918624 +26 18 56.836952784 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 1045 0
6 V* V1055 Ori LXB 06 17 07.3565603963 +09 08 13.515857360   18.80 18.5     ~ 594 1
7 V* GP Vel HXB 09 02 06.8608812864 -40 33 16.899168060 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1588 0
8 GRO J1008-571 HXB 10 09 46.9642314696 -58 17 35.603851848       14.63   B0e 269 0
9 V* V779 Cen HXB 11 21 15.0920532528 -60 37 25.630264596   14.4 12.27     O9III/Veq 1159 0
10 1E 1145.1-6141 HXB 11 47 28.5598257552 -61 57 13.426997544   13.08       B2Iae 158 0
11 V* BP Cru HXB 12 26 37.5605188992 -62 46 13.261044684   12.482 10.803 10.304   B1Ia+ 731 0
12 V* GR Mus LXB 12 57 37.1833002949 -69 17 18.996899563   19.40 19.1     ~ 275 0
13 4U 1323-62 LXB 13 26 37.0 -62 08 09           ~ 192 0
14 MAXI J1348-630 HX? 13 48 12.7388336424 -63 16 29.709083208           ~ 201 0
15 4U 1416-62 HXB 14 21 12.1560262026 -62 41 56.089360085   17.9 17.2     B1e 171 0
16 V* BR Cir HXB 15 20 40.8532547060 -57 10 00.206639033   21.4 21.4     B5-A0I 849 1
17 V* QV Nor HXB 15 42 23.3633146128 -52 23 09.577395960   16.3 14.5     B0.2Ia 455 1
18 V* IL Lup HXB 15 47 08.2768672752 -47 40 10.284587760         15.624 ~ 532 1
19 V* QU TrA LXB 15 47 53.6 -62 34 11           ~ 168 0
20 V* LU TrA LXB 16 01 02.4 -60 44 19 18.35 19.05 18.6     ~ 90 0
21 2MASS J16014823-6108547 Sy2 16 01 48.2218659744 -61 08 54.630327732   16.8       ~ 32 0
22 V* QX Nor LXB 16 12 43.0 -52 25 26           ~ 946 1
23 4U 1624-49 LXB 16 28 02.825 -49 11 54.61           ~ 250 0
24 IGR J16283-4838 HXB 16 28 10.83216 -48 38 56.0904           OBsg 40 0
25 IGR J16318-4848 HXB 16 31 48.3090342864 -48 49 00.665054832         16.217 B[e]I 181 0
26 V* V801 Ara LXB 16 40 55.5976953528 -53 45 04.948107156 17.50 18.20 17.5   17.07 ~ 921 0
27 IGR J16418-4532 HXB 16 41 50.7984926736 -45 32 25.366995132           BN0.5Ia 120 0
28 4U 1642-45 LXB 16 45 48.1 -45 36 42           ~ 467 1
29 IGR J16465-4507 HXB 16 46 35.2590465192 -45 07 04.609890912       14.033   O9.5Ia 105 0
30 4U 1701-407 LXB 17 01 44.3 -40 51 30           ~ 47 0
31 V* V821 Ara LXB 17 02 49.3876391280 -48 47 23.087954544         15.322 ~ 2237 0
32 HD 153919 HXB 17 03 56.7725629224 -37 50 38.913331452 6.06 6.78 6.51 6.08 5.90 O6Iafcp 851 0
33 V* V1101 Sco LXB 17 05 44.4916006152 -36 25 23.049324480   20.10 18.6     ~ 473 0
34 X Ara X-1 LXB 17 06 15.2 -43 02 11           ~ 296 1
35 1RXS J170855.6-440653 LXB 17 08 54.346 -44 06 08.38           ~ 406 1
36 IGR J17091-3624 LXB 17 09 07.61 -36 24 25.7           ~ 320 1
37 4U 1708-40 LXB 17 12 23.6 -40 50 36           ~ 70 0
38 4U 1722-30 LXB 17 27 33.25 -30 48 07.4     12.50     ~ 278 1
39 V* V2216 Oph LXB 17 31 44.17 -16 57 40.9 16.40 17.10 16.8     ~ 329 1
40 NAME Slow Burster LXB 17 31 58.0 -33 49 58     15.50     ~ 865 1
41 NAME Rapid Burster LXB 17 33 24.0 -33 23 19           ~ 429 2
42 1RXS J173546.9-302859 LXB 17 35 47.1 -30 28 58           ~ 82 1
43 1ES 1735-26.9 LXB 17 38 17.6 -26 59 39           ~ 177 0
44 V* V926 Sco LXB 17 38 58.2384053021 -44 27 00.699118812 16.90 17.70 17.5     ~ 480 0
45 SWIFT J174510.8-262411 LXB 17 45 10.849 -26 24 12.60           ~ 78 0
46 2E 3943 LXB 17 46 05.3 -29 30 52           ~ 217 1
47 X Sgr X-1 LXB 17 47 56.3 -26 33 47           ~ 402 0
48 [KRL2007b] 281 LXB 17 48 13.148 -36 07 57.02     20.9     ~ 115 0
49 AX J1749.1-2639 HXB 17 49 12.969 -26 38 38.93           Be? 77 1
50 4U 1746-371 LXB 17 50 12.66 -37 03 08.2     8.43     ~ 206 1
51 IGR J17586-2129 HXB 17 58 34.5557606184 -21 23 21.534625068           ~ 32 0
52 V* V4134 Sgr LXB 17 58 40.6 -33 48 27   19.20 18.5     ~ 183 0
53 4U 1758-25 LXB 18 01 09.7308060816 -25 04 44.120221284     11.08     ~ 705 1
54 2CXO J180112.3-254436 HXB 18 01 12.4783119670 -25 44 35.694663099           AV 417 1
55 X Sgr X-3 LXB 18 01 32.6 -20 31 45           ~ 254 1
56 SAX J1802.7-2017 HXB 18 02 41.9407199832 -20 17 17.312648064   17.4 16.4     B1Ib 100 0
57 2S 1803-245 LXB 18 06 50.72 -24 35 28.6           ~ 84 0
58 V* V5512 Sgr LXB 18 14 31.3 -17 09 23     12.73     K5III 449 0
59 4U 1812-12 LXB 18 15 06.4 -12 05 48           ~ 124 2
60 V* NP Ser LXB 18 16 01.7 -14 02 09   18.8       K 683 2
61 SAX J1818.6-1703 HXB 18 18 37.8984077808 -17 02 47.967846180           B0Iab 112 0
62 MAXI J1820+070 LXB 18 20 21.9423816480 +07 11 07.284859440           ~ 511 0
63 IGR J18214-1318 HXB 18 21 19.7674145112 -13 18 39.093412932           B0V-O9I 41 0
64 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 1056 1
65 4U 1823-00 LXB 18 25 22.3 -00 00 41   23.00 22     ~ 95 0
66 2MASS J18254409-1035059 HXB 18 25 44.10 -10 35 05.9           ~ 18 0
67 V* V691 CrA LXB 18 25 46.8185061768 -37 06 18.529336656 14.30 15.20 15.1     ~ 461 0
68 2XMM J182833.7-103700 LXB 18 28 33.7753501392 -10 37 03.710934228           ~ 40 0
69 V* V4634 Sgr LXB 18 29 28.8 -23 47 48 18.90 19.40 19     ~ 399 0
70 IGR J18308-1232 CV* 18 30 49.9431958827 -12 32 19.069678646   17.3 17.9 16.6   ~ 28 0
71 X Sct X-1 HXB 18 35 25.8244223112 -07 36 50.416365528           ~ 89 0
72 V* MM Ser LXB 18 39 57.8 +05 02 13   19.2 19.2     ~ 378 0
73 SNR G027.3+00.0 SNR 18 41 17.8 -04 56 12           ~ 345 3
74 1AGLR J1839-0550 HXB 18 41.7 -05 54           ~ 13 0
75 Ginga 1839-04 HXB 18 41.8 -04 30           ~ 10 0
76 IGR J18450-0435 HXB 18 45 01.5900617304 -04 33 56.643032844   16.278 14.115 13.467 11.42 O9.5I 97 0
77 2MASS J18473666-0156334 ** 18 47 36.670 -01 56 33.46           WN7 29 0
78 IGR J18483-0311 HXB 18 48 17.2064716656 -03 10 16.865225040 23.702 25.162 21.884 17.888 15.88 B0.5Ia 135 0
79 EXO 1846-031 LXB 18 49 17.1 -03 03 44           ~ 114 0
80 4U 1850-086 LXB 18 53 04.89 -08 42 19.7 20.40 21.20 21.0     ~ 266 1
81 XTE J1855-026 HXB 18 55 30.4058947392 -02 36 16.737653700   16.451 14.512 14.056   B0Iaep 104 0
82 4U 1901+03 HXB 19 03 39.3926409480 +03 12 15.758070228           B8-9IV 122 0
83 4U 1908+075 HXB 19 10 48.2133201408 +07 35 51.707133960           O7.5/9.5If 139 0
84 X Aql X-1 LXB 19 11 16.0571313336 +00 35 05.868232692           ~ 1186 1
85 SS 433 HXB 19 11 49.5647697480 +04 58 57.827127648   16.854 14.643     A7Ib 2253 4
86 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2810 0
87 V* V1405 Aql LXB 19 18 47.6 -05 14 18 20.90 21.40 21.0     ~ 495 0
88 IGR J19294+1816 HXB 19 29 55.9057395264 +18 18 38.248439004           B1Ve 53 1
89 XTE J1946+274 HXB 19 45 39.3568693200 +27 21 55.501637040   18.76 16.92 15.62 14.38 B0-1IV-Ve 138 0
90 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
91 V* V1408 Aql LXB 19 59 24.0074252040 +11 42 29.859773292 18.40 18.97 18.95 18.70 18.66 ~ 234 0
92 V* V2246 Cyg HXB 20 32 15.2749858128 +37 38 14.843024844   22.16 19.41 17.32 15.18 B0Ve 480 0
93 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 2035 2
94 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1324 1
95 V* V1341 Cyg LXB 21 44 41.1544345272 +38 19 17.066570988 15.00 15.13 14.68 15.00   A9III 1229 1

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