2005A&A...433..815B


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.08CET07:38:22

2005A&A...433..815B - Astronomy and Astrophysics, volume 433, 815-825 (2005/4-3)

Kinematic study of the blazar S5 0716+714.

BACH U., KRICHBAUM T.P., ROS E., BRITZEN S., TIAN W.W., KRAUS A., WITZEL A. and ZENSUS J.A.

Abstract (from CDS):

We present the results of a multi-frequency study of the structural evolution of the VLBI jet in the BL Lac object 0716+714 over the last 10 years. We show VLBI images obtained at 5GHz, 8.4GHz, 15GHz and 22GHz. The milliarcsecond source structure is best described by a one-sided core-dominated jet of ∼10mas length. Embedded jet components move superluminally with speeds ranging from 5c to 16c (assuming z=0.3). Such fast superluminal motion is not typical of BLLac objects, however it is still in the range of jet speeds typically observed in quasars (10c to 20c). In 0716+714, younger components that were ejected more recently seem to move systematically slower than the older components. This and a systematic position angle variation of the inner (1mas) portion of the VLBI jet suggests an at least partly geometric origin of the observed velocity variations. The observed rapid motion and the derived Lorentz factors are discussed with regard to the rapid Intra-Day Variability (IDV) and the γ-ray observations, from which very high Doppler factors are inferred.

Abstract Copyright:

Journal keyword(s): galaxies: jets - galaxies: BL Lacertae objects: individual: S5 0716+714 - radio continuum: galaxies

CDS comments: Table 2: components CN in the jet are not in SIMBAD.

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 QSO J0530+13 Bla 05 30 56.41672 +13 31 55.1495     20.0 19.35   ~ 893 1
2 8C 0716+714 BLL 07 21 53.4484901266 +71 20 36.362058601   15.5 14.17 14.27   ~ 1155 1
3 4C 71.07 QSO 08 41 24.36526906 +70 53 42.1730054     16.5 16.8   ~ 709 1
4 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5406 1
5 3C 279 Bla 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2752 2
6 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1574 2
7 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 2037 1

    Equat.    Gal    SGal    Ecl

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2021.03.08-07:38:22

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