2010A&A...521A...6V


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.23CEST19:11:02

2010A&A...521A...6V - Astronomy and Astrophysics, volume 521, A6-6 (2010/10-1)

Physical parameters of a relativistic jet at very high redshift: the case of the blazar J1430+4204.

VERES P., FREY S., PARAGI Z. and GURVITS L.I.

Abstract (from CDS):

The high-redshift (z=4.72) blazar J1430+4204 produced a major radio outburst in 2005. Such outbursts are usually associated with the emergence of a new component in the inner radio jet. We searched for possible changes in the radio structure on milli-arcsecond angular scales, to determine physical parameters that characterise the relativistic jet ejected from the centre of this source. We analysed 15-GHz radio interferometric images obtained with the Very Long Baseline Array (VLBA) before and after the peak of the outburst. We did not identify any significant new jet component over a period of 569 days. We estimated the Doppler factor, the Lorentz factor, and the apparent transverse speed of a putative jet component using three different methods. The likely small jet angle to the line of sight and our values of the apparent transverse speed are consistent with not detecting a new jet feature.

Abstract Copyright:

Journal keyword(s): radio continuum: galaxies - galaxies: active - galaxies: jets - galaxies: individual: J1430+4204 - techniques: interferometric

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 7C 064253.00+445430.00 QSO 06 46 32.02599463 +44 51 16.5901237   19.57 18.49 18.64   ~ 314 1
2 QSO J0854+2006 BLL 08 54 48.8749311881 +20 06 30.642936668   15.91 15.43 15.56   ~ 1943 1
3 ICRF J092703.0+390220 Sy1 09 27 03.0139516273 +39 02 20.847968628   17.17 17.00 16.486   ~ 920 1
4 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2634 2
5 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 657 2
6 7C 142432.70+363834.00 QSO 14 26 37.08750 +36 25 09.5737   20.44 19.93 20.27   ~ 50 1
7 7C 142826.80+421756.00 QSO 14 30 23.74163330 +42 04 36.4911889   24.43 22.04 20.2   ~ 109 1
8 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1530 2

    Equat.    Gal    SGal    Ecl

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2019.10.23-19:11:02

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