2024ApJS..275...41Z

Query : 2024ApJS..275...41Z

2024ApJS..275...41Z - Astrophys. J., Suppl. Ser., 275, 41 (2024/December-0)

The Statistical Analysis of GeV Spectral Breaks in Bright Gamma-Ray Flat-spectrum Radio Quasars.

ZHU K.R., CHEN J.M. and ZHANG L.

Abstract (from CDS):

We present the statistical results of GeV spectral breaks of bright gamma-ray flat-spectrum radio quasars (FSRQs) in the energy range of 0.1-10 GeV based on New Pass 8 data of the Large Area Telescope on board Fermi Gamma-Ray Space Telescope. We have fitted the 15 yr average gamma-ray spectra of 755 FSRQs by using both the broken power law (BPL) and logarithmic parabola (LP) models, and obtained 87 bright gamma-ray FSRQs with their integrated photon fluxes greater than 2.16 × 10–8 cm–2 s–1. From our results, the FSRQ population shows similar preferences for both the BPL and LP models in gamma-ray spectral fitting, and the clustering analysis suggests that BPL-preferred and LP-preferred FSRQs belong to the same category. Our results indicate that GeV spectral breaks in bright gamma-ray FSRQs are located at 2.90 ± 1.92 GeV in the rest frame, and the observed change in photon index is Δγ = 0.45 ± 0.19, which is consistent with the expected value for a cooling break of electrons scattering seed photons.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Active galactic nuclei - Gamma-ray sources - Blazars - Flat-spectrum radio quasars

Simbad objects: 89

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Number of rows : 89
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 ICRF J002829.8+200026 Bla 00 28 29.81848131 +20 00 26.7440093   19.5 19.5     ~ 76 1
2 PKS J0038-2459 Bla 00 38 14.73550152 -24 59 02.2352926   18.90   17.14   ~ 145 1
3 4C 01.02 Bla 01 08 38.77110544 +01 35 00.3171844   18.54 18.39 19.05   ~ 589 1
4 4C 31.03 Bla 01 12 50.3328920232 +32 08 17.435303556     18.0 18.1   ~ 140 1
5 QSO B0116-219 Bla 01 18 57.26217841 -21 41 30.1402631   19.40 19.0 19.37   ~ 144 1
6 QSO B0131-522 Bla 01 33 05.76250002 -52 00 03.9454078   18.68 20.3 18.63   ~ 129 1
7 6C 013354+473615 Bla 01 36 58.59480326 +47 51 29.1000720     19.50 19.25 15.21 ~ 537 1
8 QSO B0202-172 Bla 02 04 57.67433267 -17 01 19.8408671   18.18 18 17.19   ~ 263 1
9 QSO B0208-512 BLL 02 10 46.2004407600 -51 01 01.893013392   17.10 16.93 14.82   ~ 485 1
10 QSO J0217+0144 Bla 02 17 48.95475095 +01 44 49.6990271   16.74 16.09 18.51 13.29 ~ 455 1
11 6C 021803+354230 BLL 02 21 05.4920852208 +35 56 13.848581904   20.0 20.0 19.60   ~ 603 3
12 QSO B0226-559 Bla 02 28 21.5992002288 -55 46 03.292197564     19.0 19.76   ~ 55 1
13 4C 28.07 Bla 02 37 52.40567519 +28 48 08.9899986     19.30 16.99   ~ 654 1
14 QSO B0244-470 Bla 02 46 00.1179456480 -46 51 17.232749496     18.5 17.9   ~ 104 1
15 ICRF J025247.9-221925 Bla 02 52 47.95365568 -22 19 25.4659009       19.83   ~ 130 1
16 QSO B0308-611 Bla 03 09 56.09914475 -60 58 39.0564095   19.00 18.5 18.18   ~ 154 1
17 QSO B0336-0156 Bla 03 39 30.93778633 -01 46 35.8041892   18.96 18.41 17.33   ~ 598 1
18 QSO B0346-279 Bla 03 48 38.14457039 -27 49 13.5657855   20.08 18.63 17.72   ~ 219 1
19 QSO J0403-3605 Bla 04 03 53.74990003 -36 05 01.9131880   17.04 17.17 16.67   ~ 313 1
20 QSO B0405-385 Bla 04 06 59.03533781 -38 26 28.0423651   19.55 18.0     ~ 250 2
21 QSO B0420-0127 Bla 04 23 15.80072217 -01 20 33.0656073   17.50 17.00 16.28   ~ 1263 3
22 QSO B0438-43 Bla 04 40 17.17997576 -43 33 08.6043290   19.31 19.5 18.2   ~ 302 2
23 QSO B0440-003 Bla 04 42 38.66072366 -00 17 43.4209582   19.59 19.22 17.85   ~ 433 1
24 QSO J0457-2324 Bla 04 57 03.1791422424 -23 24 52.021129572   18.85 18.5 16.56   ~ 435 1
25 4C -02.19 Bla 05 01 12.80988538 -01 59 14.2564557   19.1 18.06 19.04   ~ 624 1
26 QSO B0502+049 Bla 05 05 23.18472514 +04 59 42.7245008   18.7 19.0 17.58   ~ 188 1
27 QSO B0514-459 Bla 05 15 45.2501347656 -45 56 43.198786536   18.18 17.5 17.31   ~ 132 1
28 QSO B0524-485 Bla 05 26 16.67131784 -48 30 36.7919695     20.0 19.36   ~ 107 1
29 QSO B0529+075 Bla 05 32 38.9985483000 +07 32 43.344156480   19.0 19.00 17.50   ~ 252 1
30 7C 071604.59+331243.00 BLL 07 19 19.41966120 +33 07 09.7087082   17.66 17.05     ~ 130 1
31 4C 14.23 BLL 07 25 16.80776465 +14 25 13.7465925       17.48   ~ 170 1
32 QSO B0736+01 Bla 07 39 18.03389906 +01 37 04.6177501   16.90 16.47 16.19   ~ 738 1
33 QSO B0805-077 Bla 08 08 15.53603763 -07 51 09.8865298     19.80 16.71   ~ 291 1
34 4C 71.07 Bla 08 41 24.36528508 +70 53 42.1730435     17.30 16.8   ~ 818 1
35 6C 091740+445437 Bla 09 20 58.45848666 +44 41 53.9850947   18.40 18.16 16.55   ~ 407 1
36 6C 091739+622838 Bla 09 21 36.23107643 +62 15 52.1803510   19.76 19.26 18.96   ~ 394 1
37 4C 55.17 Bla 09 57 38.1839604096 +55 22 57.754950636   18.24 17.89     ~ 459 1
38 QSO B1004-217 Bla 10 06 46.4138565672 -21 59 20.411032848   17.05 16.89 16.29   ~ 111 1
39 6C 103031+610629 Bla 10 33 51.4290959304 +60 51 07.334442756   19.31 18.86 20.24   ~ 195 2
40 6C 104451+715930 Bla 10 48 27.61992778 +71 43 35.9384142     19.0 17.49   ~ 270 1
41 QSO B1124-186 Bla 11 27 04.39245388 -18 57 17.4418445   19.17 18.65 19.23   ~ 254 1
42 QSO J1130-1449 Bla 11 30 07.0523452128 -14 49 27.388021944   17.17 16.90 16 16.97 ~ 739 1
43 6C 114419+401458 Bla 11 46 58.29791724 +39 58 34.3043988   18.80 18.45 18.58   ~ 261 1
44 Ton 599 Bla 11 59 31.83391383 +29 14 43.8268224   14.80 14.41 17.652 13.39 ~ 989 1
45 6C 121746+712158 Bla 12 20 03.62842109 +71 05 31.1335587       19.8   ~ 73 2
46 7C 122223.5+213929 Bla 12 24 54.4583146056 +21 22 46.385507388   17.56 17.50 18.2   ~ 770 2
47 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
48 [VV2006] J123932.7+044305 Bla 12 39 32.75568115 +04 43 05.2330218   20.81 20.56 18.1   ~ 191 2
49 QSO J1246-2547 Bla 12 46 46.80203943 -25 47 49.2889822   17.65 17.41 16.96 15.5 ~ 314 1
50 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
51 US 371 BLL 13 10 28.66385420 +32 20 43.7828340   15.61 15.24 17.91   ~ 917 1
52 [VV2006] J132111.2+221613 Bla 13 21 11.20255812 +22 16 12.1083023   19.59 19.23 19.37   ~ 133 1
53 7C 134328.69+450758.00 Bla 13 45 33.17247907 +44 52 59.5725560       19.6   ~ 138 1
54 QSO B1406-076 Bla 14 08 56.48120623 -07 52 26.6665312   20.3 18.4     ~ 336 1
55 6C 142016+323628 Bla 14 22 30.3788624376 +32 23 10.440862980   19.33 19.16 19.11   ~ 196 1
56 QSO B1424-41 Bla 14 27 56.29756617 -42 06 19.4376238   18.48 17.7 16.30   ~ 547 1
57 7C 1441+2514 Bla 14 43 56.89220390 +25 01 44.4907165   19.5   19.7   ~ 179 1
58 QSO J1457-3539 BLL 14 57 26.71171449 -35 39 09.9716148   17.95 19.50 18.93   ~ 167 1
59 QSO B1502+1041 Bla 15 04 24.97978391 +10 29 39.1985309   18.97 18.56 18.94   ~ 634 1
60 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
61 7C 1520+3154 Bla 15 22 09.99173254 +31 44 14.3819383   20.45 19.89 19.87   ~ 230 1
62 4C 38.41 Bla 16 35 15.49297809 +38 08 04.5005995   18.14 17.97 17.25   ~ 906 1
63 3C 345 Bla 16 42 58.80997043 +39 48 36.9939552   16.81 16.59 16.84   ~ 1808 3
64 6C 170021+683437 Bla 17 00 09.29285259 +68 30 06.9591278     17.00 18.47   ~ 143 1
65 7C 172601.30+453309.00 BLL 17 27 27.65080202 +45 30 39.7312530   19.0 18.10 16.64   ~ 233 2
66 7C 173240.70+385949.00 BLL 17 34 20.57853650 +38 57 51.4430945   19.5 19 19.00   ~ 232 1
67 ICRF J182912.4-581355 Bla 18 29 12.40235306 -58 13 55.1618061   19.26   18.80   ~ 50 1
68 4FGL J1829.2-5813 AG? 18 29 14.6 -58 13 56           ~ 15 0
69 6C 184914+670207 Bla 18 49 16.07228484 +67 05 41.6802599     16.90 17.45   ~ 305 2
70 QSO B1908-202 Bla 19 11 09.65289294 -20 06 55.1090664   18.21   18.14   ~ 306 1
71 QSO B1954-388 Bla 19 57 59.81927491 -38 45 06.3558881   18.47 17.07 16.73   ~ 239 1
72 QSO B2022-077 BLL 20 25 40.6602562440 -07 35 52.688047128   18.5       ~ 234 3
73 QSO B2032+107 BLL 20 35 22.33330500 +10 56 06.7881888   17.96 16.37 17.4   ~ 218 1
74 QSO B2052-474 Bla 20 56 16.35980507 -47 14 47.6277179   18.29 19.1 18.07   ~ 341 1
75 QSO J2115+295 Bla 21 15 29.41345155 +29 33 38.3669390     19.5 19.26   ~ 201 1
76 QSO B2141+1730 Bla 21 43 35.54456275 +17 43 48.7875890   15.91 15.73 15.17   ~ 418 1
77 QSO J2147-7536 Bla 21 47 12.73063669 -75 36 13.2249063   17.79 17.30     ~ 167 1
78 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1
79 QSO B2227-0848 Bla 22 29 40.08433313 -08 32 54.4355294   17.80 17.41 17.81   ~ 391 1
80 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2
81 QSO B2232+282 BLL 22 36 22.47084387 +28 28 57.4132050   19.1 19.0 17.60   ~ 306 2
82 ICRF J224412.7+405713 BLL 22 44 12.7311667056 +40 57 13.619816316       19.7   ~ 110 1
83 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
84 QSO B2255-2814 Bla 22 58 05.96287687 -27 58 21.2567572   17.34 16.77 17.20   ~ 397 1
85 6C 230840+340844 Bla 23 11 05.32880063 +34 25 10.9049514     19.5 19.2   ~ 138 1
86 QSO B2320-035 Bla 23 23 31.95375055 -03 17 05.0238540   18.6   18.16   ~ 229 2
87 QSO B2326-502 Bla 23 29 20.8816086312 -49 55 40.657964772   19.0 19.0 20.86   ~ 114 1
88 QSO J2345-1555 BLL 23 45 12.4622049264 -15 55 07.836801888   19.21   18.48   ~ 202 1
89 QSO B2345-167 Bla 23 48 02.60851466 -16 31 12.0222546   18.00 18.41 16.86   ~ 432 1

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