2008A&A...488..897H


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.02CEST14:32:05

2008A&A...488..897H - Astronomy and Astrophysics, volume 488, 897-903 (2008/9-4)

Wavelet analysis of a large sample of AGN at high radio frequencies.

HOVATTA T., LEHTO H.J. and TORNIKOSKI M.

Abstract (from CDS):

We have studied the characteristic timescales of 80 AGNs at 22, 37 and 90GHz examining the properties of the wavelet method and comparing them to traditional Fourier-based methods commonly used in astronomy. We used the continuous wavelet transform with the Morlet wavelet to study the characteristic timescales. We also gain information when the timescale is present in the flux curve and if it is persistent or not. Our results show that the sources are not periodic and changes in the timescales over a long time are common. The property of wavelets to be able to distinguish when the timescale has been present is superior to the Fourier-based methods. Therefore we consider it appropriate to use wavelets when the quasi-periodicities in AGNs are studied.

Abstract Copyright:

Journal keyword(s): galaxies: active - methods: statistical - radio continuum: galaxies

Simbad objects: 80

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Number of rows : 80

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Mrk 1501 Sy1 00 10 31.0058529490 +10 58 29.505989476   15.96 15.40 12.22   ~ 638 0
2 QSO B0016+73 QSO 00 19 45.7863740 +73 27 30.017554     19.0 18.26   ~ 273 1
3 4C 01.02 QSO 01 08 38.7712667820 +01 35 00.318317679   18.54 18.39 19.05   ~ 465 1
4 QSO B0109+224 BLL 01 12 05.8246825085 +22 44 38.786096536   16.00 15.66 15.47   ~ 295 2
5 QSO B0133+476 QSO 01 36 58.59480585 +47 51 29.1000445     18.0 19.25 15.21 ~ 446 1
6 QSO B0149+218 QSO 01 52 18.05904586 +22 07 07.6998109     18 18.89   ~ 138 1
7 4C 15.05 Bla 02 04 50.41389571 +15 14 11.0436591   21.9 22.1 21.00   ~ 360 1
8 6C 021252+733537 BLL 02 17 30.8143057005 +73 49 32.612359669     19.0 18.97   ~ 406 1
9 6C 022440+670742 QSO 02 28 50.05148948 +67 21 03.0293039   19.5   18.1   ~ 231 1
10 4C 28.07 QSO 02 37 52.40567732 +28 48 08.9900231     18.5 16.99   ~ 499 1
11 QSO B0235+1624 BLL 02 38 38.93010 +16 36 59.2746   16.46 15.50 15.92   ~ 1392 2
12 QSO B0248+430 QSO 02 51 34.53674204 +43 15 15.8291997     18.0 13.72   ~ 192 1
13 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3543 3
14 4C 32.14 QSO 03 36 30.10760600 +32 18 29.3422210     17.50 16.6   ~ 579 1
15 QSO B0336-0156 QSO 03 39 30.93778751 -01 46 35.8041062   18.96 18.41 17.33   ~ 508 1
16 4C 50.11 QSO 03 59 29.74726473 +50 57 50.1615765           ~ 395 1
17 3C 111 Sy1 04 18 21.2773655604 +38 01 35.801523843   19.75 18.05     ~ 856 1
18 QSO B0420-0127 QSO 04 23 15.80072776 -01 20 33.0654034   17.50 17.00 16.28   ~ 1053 3
19 QSO B0422+004 BLL 04 24 46.8423020674 +00 36 06.327828096 16.15 15.94 16.98     ~ 323 1
20 Mrk 1506 Sy1 04 33 11.0958197353 +05 21 15.617543663   15.72 15.05 10.08   ~ 1840 2
21 QSO B0446+113 BLL 04 49 07.67110088 +11 21 28.5964577     20 18.58   ~ 224 1
22 4C -02.19 QSO 05 01 12.80988366 -01 59 14.2562534   19.1 18.4 19.04   ~ 517 1
23 QSO J0530+13 QSO 05 30 56.41672 +13 31 55.1495     20.0 19.35   ~ 879 1
24 7C 055201.39+394824.00 QSO 05 55 30.80561150 +39 48 49.1649664     18.0 17.5   ~ 466 2
25 7C 064253.00+445430.00 QSO 06 46 32.02599463 +44 51 16.5901237   19.57 18.49 18.64   ~ 321 1
26 8C 0716+714 BLL 07 21 53.4484901266 +71 20 36.362058601   15.5 14.17 14.27   ~ 1131 1
27 QSO J0738+1742 BLL 07 38 07.39374766 +17 42 18.9982302   16.76 16.22 15.78   ~ 895 1
28 QSO B0736+01 QSO 07 39 18.03389693 +01 37 04.6178588   16.90 16.47 16.19   ~ 623 1
29 QSO B0754+10 BLL 07 57 06.64294682 +09 56 34.8523471   15.43 15.00 15.99   ~ 403 1
30 7C 080458.39+495918.00 QSO 08 08 39.66628353 +49 50 36.5304035   19.55 19.18 18.34   ~ 325 2
31 7C 081451.89+423206.00 BLL 08 18 15.99960470 +42 22 45.4149140   18.88 18.18 17.81   ~ 351 1
32 7C 082754.29+242103.00 QSO 08 30 52.08619070 +24 10 59.8204032   17.62 17.26 16.30   ~ 465 1
33 4C 71.07 QSO 08 41 24.36526906 +70 53 42.1730054     16.5 16.8   ~ 694 1
34 QSO J0854+2006 BLL 08 54 48.8749311881 +20 06 30.642936668   15.91 15.43 15.56   ~ 1997 1
35 ICRF J090933.4+425346 Sy2 09 09 33.49711097 +42 53 46.4818256   19.98 19.42 18.220   ~ 462 0
36 ICRF J092703.0+390220 Sy1 09 27 03.0139516273 +39 02 20.847968628   17.17 17.00 16.486   ~ 932 1
37 4C 40.24 QSO 09 48 55.33815234 +40 39 44.5869810   18.31 18.02 17.85   ~ 307 1
38 ICRF J095649.8+251516 Sy1 09 56 49.87539 +25 15 16.0505   17.46 17.21 17.96   ~ 285 1
39 4C 55.17 QSO 09 57 38.1845058338 +55 22 57.750865288   18.24 17.89     ~ 377 1
40 6C 095456+654857 BLL 09 58 47.2452838930 +65 33 54.821524491     17.0 15.75   ~ 616 1
41 4C 01.28 BLL 10 58 29.60520747 +01 33 58.8237691   18.74 18.28 16.68   ~ 645 2
42 Mrk 421 BLL 11 04 27.3139210166 +38 12 31.798324828   13.50 12.90 8.31   ~ 2381 1
43 7C 1147+2434 BLL 11 50 19.2119754161 +24 17 53.834754764   16.26 15.74 15.80   ~ 245 1
44 Ton 599 QSO 11 59 31.83390975 +29 14 43.8268741   14.80 14.41 17.652 13.39 ~ 795 1
45 7C 1219+2830 BLL 12 21 31.6902446545 +28 13 58.500383827   16.81 16.11 14.24   ~ 778 1
46 4C 21.35 QSO 12 24 54.4583467193 +21 22 46.385219365   17.56 17.50 18.2   ~ 561 2
47 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5313 1
48 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2701 2
49 7C 1308+3236 BLL 13 10 28.66387 +32 20 43.7831   15.61 15.24 17.91   ~ 747 1
50 QSO B1413+135 BLL 14 15 58.81750938 +13 20 23.7129069   21.055 20.000 18.461   ~ 376 1
51 6C 141804+543700 BLL 14 19 46.5976435439 +54 23 14.787308481   16.17 15.65 14.16   ~ 537 1
52 QSO B1502+1041 QSO 15 04 24.97978142 +10 29 39.1986151   18.97 18.56 18.94   ~ 460 1
53 QSO J1512-0906 QSO 15 12 50.53292491 -09 05 59.8295878   16.74 16.54     ~ 1146 1
54 4C 14.60 BLL 15 40 49.49151734 +14 47 45.8848470   17.72 17.30 17.240   ~ 378 1
55 4C 10.45 QSO 16 08 46.203185540 +10 29 07.77583000   18.5 18.0 18.03   ~ 339 1
56 6C 161147+342017 QSO 16 13 41.0645258703 +34 12 47.911898732   17.98 17.46 17.07   ~ 578 1
57 4C 38.41 QSO 16 35 15.492970280 +38 08 04.50062279   18.14 17.97 17.25   ~ 751 1
58 ICRF J163813.4+572023 Sy1 16 38 13.45629705 +57 20 23.9790727     17.0 16.94   ~ 311 1
59 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1550 2
60 4C 39.49 BLL 16 53 52.21668494 +39 45 36.6089458 14.09 14.15 13.29 8.26   ~ 1912 2
61 ICRF J172824.9+042704 Sy1 17 28 24.95272422 +04 27 04.9139217   17.43 16.99 16.24   ~ 196 1
62 4C 51.37 QSO 17 40 36.9779934388 +52 11 43.411910710   18.16 18.5 16.73   ~ 360 1
63 QSO B1741-038 QSO 17 43 58.85613396 -03 50 04.6166450     18.5 17.98   ~ 479 1
64 4C 09.57 BLL 17 51 32.81857318 +09 39 00.7284829   17.46 16.78 15.57   ~ 811 1
65 8C 1803+784 BLL 18 00 45.6831135718 +78 28 04.017792333   16.4 16.4 15.46   ~ 660 1
66 3C 371 BLL 18 06 50.6803567107 +69 49 28.108152993   14.77 14.22 11.39   ~ 795 2
67 4C 56.27 BLL 18 24 07.06837771 +56 51 01.4908371   18.9 18.4 16.48   ~ 438 1
68 ICRF J192748.4+735801 Sy1 19 27 48.4944745594 +73 58 01.571908984     15.5 15.11   ~ 490 2
69 8C 2007+777 BLL 20 05 30.9981060951 +77 52 43.245329882     16.5 17.36   ~ 404 1
70 QSO B2005+40 QSO 20 07 44.9443187008 +40 29 48.601470737   18.5 19 20.3   ~ 267 1
71 ICRF J202206.6+613658 Sy2 20 22 06.68174818 +61 36 58.8047862     19.5 17.58   ~ 295 1
72 QSO B2134+0028 QSO 21 36 38.5862648232 +00 41 54.210724774   17.30 17.08 17.02   ~ 526 2
73 QSO B2136+1410 QSO 21 39 01.30926937 +14 23 35.9922096     18.5 18.22   ~ 230 1
74 4C 06.69 QSO 21 48 05.4585565234 +06 57 38.605396596   16.85 16.47 15.06   ~ 597 1
75 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 2006 1
76 4C 31.63 BLL 22 03 14.9758020 +31 45 38.269707   15.85 15.58 14.33   ~ 460 1
77 3C 446 BLL 22 25 47.2593030 -04 57 01.390762   18.83 18.39 16.3   ~ 760 1
78 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 967 2
79 QSO B2232+282 BLL 22 36 22.4706694778 +28 28 57.412050821   19.1 19.0 17.60   ~ 221 1
80 3C 454.3 QSO 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2504 2

    Equat.    Gal    SGal    Ecl

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2020.07.02-14:32:05

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