2006ApJ...640..592S


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.25CET22:29:30

2006ApJ...640..592S - Astrophys. J., 640, 592-602 (2006/April-1)

Chandra observations of magnetic fields and relativistic beaming in four quasar jets.

SCHWARTZ D.A., MARSHALL H.L., LOVELL J.E.J., MURPHY D.W., BICKNELL G.V., BIRKINSHAW M., GELBORD J., GEORGANOPOULOS M., GODFREY L., JAUNCEY D.L., PERLMAN E.S. and WORRALL D.M.

Abstract (from CDS):

We discuss the physical properties of four quasar jets imaged with the Chandra X-Ray Observatory in the course of a survey for X-ray emission from radio jets (Marshall et al.). These objects have sufficient counts to study their spatially resolved properties, even in the 5 ks survey observations. We have acquired Australia Telescope Compact Array data with resolution matching Chandra. We have searched for optical emission with Magellan, with subarcsecond resolution. The radio to X-ray spectral energy distribution for most of the individual regions indicates against synchrotron radiation from a single-component electron spectrum. We therefore explore the consequences of assuming that the X-ray emission is the result of inverse Compton scattering on the cosmic microwave background. If particles and magnetic fields are near minimum energy density in the jet rest frames, then the emitting regions must be relativistically beamed, even at distances of order 500 kpc from the quasar. We estimate the magnetic field strengths, relativistic Doppler factors, and kinetic energy flux as a function of distance from the quasar core for two or three distinct regions along each jet. We develop, for the first time, estimates in the uncertainties in these parameters, recognizing that they are dominated by our assumptions in applying the standard synchrotron minimum energy conditions. The kinetic power is comparable with, or exceeds, the quasar radiative luminosity, implying that the jets are a significant factor in the energetics of the accretion process powering the central black hole. The measured radiative efficiencies of the jets are of order 10–4.

Abstract Copyright:

Journal keyword(s): Galaxies: Jets - Galaxies: Quasars: General - X-Rays: Galaxies

CDS comments: PKS 1150-089 is a misprint for PKS 1150+497 ?? (cf. 2002ApJ...571..206S), Knot C4 of PKS 0827+243 not in SIMBAD.

Simbad objects: 12

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Number of rows : 12

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 B0208-512 BLL 02 10 46.2000629834 -51 01 01.893312084   17.10 16.93 14.82   ~ 377 1
2 QSO J0635-7516 QSO 06 35 46.5080299 -75 16 16.815501   15.96 15.75 15.82   ~ 504 1
3 QSO B0920-397 QSO 09 22 46.41826064 -39 59 35.0683561   18.12 18.8     ~ 96 1
4 QSO B1030-357 QSO 10 33 07.6624271102 -36 01 56.791177580   20.6 20.6 18.4   ~ 36 1
5 LB 2136 QSO 11 53 24.46663282 +49 31 08.8301947   17.94 17.66     ~ 411 1
6 ICRF J120533.2-263404 Sy1 12 05 33.2121604714 -26 34 04.455632711   19.81 19.5 19.3   ~ 125 1
7 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5275 1
8 ICRF J135704.4+191907 Sy1 13 57 04.43665381 +19 19 07.3724675   16.33 16.03 15.3   ~ 405 3
9 QSO J1512-0906 QSO 15 12 50.53292491 -09 05 59.8295878   16.74 16.54     ~ 1129 1
10 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1539 2
11 [SGM2004] 1150+497 B X ~ ~           ~ 9 0
12 [SMT2002] 1354+195 A X ~ ~           ~ 6 0

    Equat.    Gal    SGal    Ecl

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2020.02.25-22:29:30

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