2015A&A...576A..43F


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.06CEST23:49:13

2015A&A...576A..43F - Astronomy and Astrophysics, volume 576A, 43-43 (2015/4-1)

On the location of the supermassive black hole in CTA 102.

FROMM C.M., PERUCHO M., ROS E., SAVOLAINEN T. and ZENSUS J.A.

Abstract (from CDS):

Relativistic jets in active galactic nuclei are one of the most powerful phenomena in the Universe. They form in the surroundings of the supermassive black holes as a by-product of accretion onto the central black hole in active galaxies. The flow in the jets propagates at velocities close to the speed of light. The distance between the first part of the jet that is visible in radio images (core) and the black hole is still a matter of debate. Only very-long-baseline interferometry observations resolve the innermost compact regions of the radio jet. These observations can access the jet base, and by combining data at different wavelenghts, address the physical parameters of the outflow from its emission. We have performed an accurate analysis of the frequency-dependent shift of the VLBI core location for a multi-wavelength set of images of the blazar CTA102 including data from 6cm down to 3mm. The measure of the position of the central black hole, with mass ∼108.93M, in the blazar CTA102 reveals a distance of ∼8x104 gravitational radii to the 86GHz core, in agreement with similar measures obtained for other blazars and distant radio galaxies, and in contrast with recent results for the case of nearby radio galaxies, which show distances between the black hole and the radio core that can be two orders of magnitude smaller.

Abstract Copyright:

Journal keyword(s): galaxies: active - quasars: individual: CTA102 - radiation mechanisms: non-thermal - radio continuum: galaxies - galaxies: jets

Simbad objects: 5

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Number of rows : 5

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 3C 111 Sy1 04 18 21.2773655604 +38 01 35.801523843   19.75 18.05     ~ 856 1
2 Mrk 1506 Sy1 04 33 11.0958197353 +05 21 15.617543663   15.72 15.05 10.08   ~ 1840 2
3 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6208 3
4 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 968 2
5 3C 454.3 QSO 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2505 2

    Equat.    Gal    SGal    Ecl

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2020.07.06-23:49:13

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