2010A&A...512A..24S


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST18:16:29

2010A&A...512A..24S - Astronomy and Astrophysics, volume 512, A24-24 (2010/3-1)

Relativistic beaming and gamma-ray brightness of blazars.

SAVOLAINEN T., HOMAN D.C., HOVATTA T., KADLER M., KOVALEV Y.Y., LISTER M.L., ROS E. and ZENSUS J.A.

Abstract (from CDS):

We investigate the dependence of γ-ray brightness of blazars on intrinsic properties of their parsec-scale radio jets and the implication for relativistic beaming. By combining apparent jet speeds derived from high-resolution VLBA images from the MOJAVE program with millimetre-wavelength flux density monitoring data from Metsaehovi Radio Observatory, we estimate the jet Doppler factors, Lorentz factors, and viewing angles for a sample of 62 blazars. We study the trends in these quantities between the sources which were detected in γ-rays by the Fermi Large Area Telescope (LAT) during its first three months of science operations and those which were not detected.The LAT-detected blazars have on average higher Doppler factors than non-LAT-detected blazars, as has been implied indirectly in several earlier studies. We find statistically significant differences in the viewing angle distributions between γ-ray bright and weak sources. Most interestingly, γ-ray bright blazars have a distribution of comoving frame viewing angles that is significantly narrower than that of γ-ray weak blazars and centred roughly perpendicular to the jet axis. The lack of γ-ray bright blazars at large comoving frame viewing angles can be explained by relativistic beaming of γ-rays, while the apparent lack of γ-ray bright blazars at small comoving frame viewing angles, if confirmed with larger samples, may suggest an intrinsic anisotropy or Lorentz factor dependence of the γ-ray emission.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: jets - quasars: general - BL Lacertae objects: general

Simbad objects: 62

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Number of rows : 62

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 QSO B0003-066 BLL 00 06 13.89288849 -06 23 35.3353162   19.1   17.14   ~ 265 1
2 QSO B0016+73 QSO 00 19 45.7863740 +73 27 30.017554     19.0 18.26   ~ 275 1
3 4C 01.02 QSO 01 08 38.7712667820 +01 35 00.318317679   18.54 18.39 19.05   ~ 468 1
4 QSO B0109+224 BLL 01 12 05.8246825085 +22 44 38.786096536   16.00 15.66 15.47   ~ 298 2
5 QSO B0133+476 QSO 01 36 58.59480585 +47 51 29.1000445     18.0 19.25 15.21 ~ 451 1
6 4C 15.05 Bla 02 04 50.41389571 +15 14 11.0436591   21.9 22.1 21.00   ~ 363 1
7 6C 021252+733537 BLL 02 17 30.8143057005 +73 49 32.612359669     19.0 18.97   ~ 408 1
8 4C 28.07 QSO 02 37 52.40567732 +28 48 08.9900231     18.5 16.99   ~ 510 1
9 QSO B0235+1624 BLL 02 38 38.93010 +16 36 59.2746   16.46 15.50 15.92   ~ 1399 2
10 4C 32.14 QSO 03 36 30.10760600 +32 18 29.3422210     17.50 16.6   ~ 584 1
11 QSO B0336-0156 QSO 03 39 30.93778751 -01 46 35.8041062   18.96 18.41 17.33   ~ 512 1
12 QSO B0420-0127 QSO 04 23 15.80072776 -01 20 33.0654034   17.50 17.00 16.28   ~ 1067 3
13 4C -02.19 QSO 05 01 12.80988366 -01 59 14.2562534   19.1 18.4 19.04   ~ 522 1
14 QSO J0530+13 QSO 05 30 56.41672 +13 31 55.1495     20.0 19.35   ~ 884 1
15 QSO B0605-0834 BLL 06 07 59.69923743 -08 34 49.9781718     18.5 17.70   ~ 399 1
16 7C 064253.00+445430.00 QSO 06 46 32.02599463 +44 51 16.5901237   19.57 18.49 18.64   ~ 326 1
17 8C 0716+714 BLL 07 21 53.4484901266 +71 20 36.362058601   15.5 14.17 14.27   ~ 1139 1
18 QSO B0736+01 QSO 07 39 18.03389693 +01 37 04.6178588   16.90 16.47 16.19   ~ 629 1
19 QSO B0754+10 BLL 07 57 06.64294682 +09 56 34.8523471   15.43 15.00 15.99   ~ 405 1
20 7C 080458.39+495918.00 QSO 08 08 39.66628353 +49 50 36.5304035   19.55 19.18 18.34   ~ 326 2
21 7C 081451.89+423206.00 BLL 08 18 15.99960470 +42 22 45.4149140   18.88 18.18 17.81   ~ 354 1
22 7C 082754.29+242103.00 QSO 08 30 52.08619070 +24 10 59.8204032   17.62 17.26 16.30   ~ 470 1
23 4C 71.07 QSO 08 41 24.36526906 +70 53 42.1730054     16.5 16.8   ~ 699 1
24 QSO J0854+2006 BLL 08 54 48.8749311881 +20 06 30.642936668   15.91 15.43 15.56   ~ 2023 1
25 ICRF J092703.0+390220 Sy1 09 27 03.0139516273 +39 02 20.847968628   17.17 17.00 16.486   ~ 934 1
26 4C 40.24 QSO 09 48 55.33815234 +40 39 44.5869810   18.31 18.02 17.85   ~ 308 1
27 4C 01.28 BLL 10 58 29.60520747 +01 33 58.8237691   18.74 18.28 16.68   ~ 657 2
28 Ton 599 QSO 11 59 31.83390975 +29 14 43.8268741   14.80 14.41 17.652 13.39 ~ 804 1
29 4C 21.35 QSO 12 24 54.4583467193 +21 22 46.385219365   17.56 17.50 18.2   ~ 571 2
30 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5352 1
31 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2727 2
32 7C 1308+3236 BLL 13 10 28.66387 +32 20 43.7831   15.61 15.24 17.91   ~ 754 1
33 QSO B1324+224 QSO 13 27 00.86131377 +22 10 50.1629729     18.90 18.80   ~ 131 1
34 QSO B1334-127 QSO 13 37 39.78277768 -12 57 24.6932620   18.5 18.5 16.22   ~ 431 1
35 QSO B1413+135 BLL 14 15 58.81750938 +13 20 23.7129069   21.055 20.000 18.461   ~ 380 1
36 QSO B1502+1041 QSO 15 04 24.97978142 +10 29 39.1986151   18.97 18.56 18.94   ~ 473 1
37 QSO J1512-0906 QSO 15 12 50.53292491 -09 05 59.8295878   16.74 16.54     ~ 1164 1
38 4C 14.60 BLL 15 40 49.49151734 +14 47 45.8848470   17.72 17.30 17.240   ~ 382 1
39 4C 10.45 QSO 16 08 46.203185540 +10 29 07.77583000   18.5 18.0 18.03   ~ 341 1
40 6C 161147+342017 QSO 16 13 41.0645258703 +34 12 47.911898732   17.98 17.46 17.07   ~ 582 1
41 4C 38.41 QSO 16 35 15.492970280 +38 08 04.50062279   18.14 17.97 17.25   ~ 755 1
42 ICRF J163813.4+572023 Sy1 16 38 13.45629705 +57 20 23.9790727     17.0 16.94   ~ 314 1
43 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1562 2
44 QSO B1730-130 QSO 17 33 02.70578476 -13 04 49.5481484   18 18.5 18.78 17.39 ~ 992 1
45 4C 51.37 QSO 17 40 36.9779934388 +52 11 43.411910710   18.16 18.5 16.73   ~ 362 1
46 QSO B1741-038 QSO 17 43 58.85613396 -03 50 04.6166450     18.5 17.98   ~ 481 1
47 4C 09.57 BLL 17 51 32.81857318 +09 39 00.7284829   17.46 16.78 15.57   ~ 818 1
48 8C 1803+784 BLL 18 00 45.6831135718 +78 28 04.017792333   16.4 16.4 15.46   ~ 667 1
49 3C 371 BLL 18 06 50.6803567107 +69 49 28.108152993   14.77 14.22 11.39   ~ 800 2
50 4C 56.27 BLL 18 24 07.06837771 +56 51 01.4908371   18.9 18.4 16.48   ~ 441 1
51 ICRF J182931.7+484446 Sy1 18 29 31.7812801678 +48 44 46.158815781   17.05 16.81 16.860   ~ 636 1
52 4C 73.18 BLL 19 27 48.4944745594 +73 58 01.571908984     15.5 15.11   ~ 495 2
53 QSO J2123+0535 QSO 21 23 44.51738 +05 35 22.0933   18.3 17.5 19.86   ~ 263 1
54 QSO B2134+0028 QSO 21 36 38.5862648232 +00 41 54.210724774   17.30 17.08 17.02   ~ 527 2
55 QSO B2136+1410 QSO 21 39 01.30926937 +14 23 35.9922096     18.5 18.22   ~ 234 1
56 4C 06.69 QSO 21 48 05.4585565234 +06 57 38.605396596   16.85 16.47 15.06   ~ 602 1
57 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 2021 1
58 4C 31.63 BLL 22 03 14.9758020 +31 45 38.269707   15.85 15.58 14.33   ~ 462 1
59 3C 446 BLL 22 25 47.2593030 -04 57 01.390762   18.83 18.39 16.3   ~ 766 1
60 QSO B2227-0848 QSO 22 29 40.08434003 -08 32 54.4353948   17.80 17.41 17.81   ~ 302 1
61 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 983 2
62 3C 454.3 QSO 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2528 2

    Equat.    Gal    SGal    Ecl

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2020.10.24-18:16:29

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