2010ApJ...708....1P


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.23CET09:23:15

2010ApJ...708....1P - Astrophys. J., 708, 1-8 (2010/January-1)

Chandra observations of the radio galaxy 3C 445 and the hot spot X-ray emission mechanism.

PERLMAN E.S., GEORGANOPOULOS M., MAY E.M. and KAZANAS D.

Abstract (from CDS):

We present new Chandra observations of the radio galaxy 3C 445, centered on its southern radio hot spot. Our observations detect X-ray emission displaced upstream and to the west of the radio-optical hot spot. Attempting to reproduce both the observed spectral energy distribution and the displacement excludes all one-zone models. Modeling of the radio-optical hot spot spectrum suggests that the electron distribution has a low-energy cutoff or break approximately at the proton rest mass energy. The X-rays could be due to external Compton scattering of the cosmic microwave background coming from the fast (Lorentz factor Γ ~ 4) part of a decelerating flow, but this requires a small angle between the jet velocity and the observer's line of sight (θ ~ 14°). Alternatively, the X-ray emission can be synchrotron from a separate population of electrons. This last interpretation does not require the X-ray emission to be beamed.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: individual: 3C 445 - galaxies: jets - radio continuum: galaxies - X-rays: galaxies

Nomenclature: Fig. 1, Table 2: [PGM2010] X-ray N=1, [PGM2010] NIRN (Nos NIR1-NIR3), [PGM2010] Radio N=1.

Simbad objects: 19

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Number of rows : 19

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 2C 94 Sy2 01 08 52.8701245540 +13 20 14.257796477   15.19       ~ 437 2
2 NAME Pictor A Sy1 05 19 49.7230919028 -45 46 43.855209977   15.73 15.77 14.85   ~ 544 1
3 QSO J0635-7516 QSO 06 35 46.5080299 -75 16 16.815501   15.96 15.75 15.82   ~ 504 1
4 2MASX J09474514+0725204 Sy1 09 47 45.1435259633 +07 25 20.596199631   17.37 16.95     ~ 328 0
5 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5275 1
6 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6104 3
7 3C 321 Sy2 15 31 43.473 +24 04 18.93   16.0   15.40   ~ 305 1
8 6C 170404+604844 Sy1 17 04 41.3742389551 +60 44 30.522600868   15.65 15.40 15.30   ~ 721 1
9 2C 1473 AGN 17 20 28.147 -00 58 47.12   15.36       ~ 296 1
10 ICRF J184208.9+794617 Sy1 18 42 08.9910523393 +79 46 17.129210139   16.06 15.38     ~ 1197 0
11 3C 403.0 Sy2 19 52 15.7997953344 +02 30 24.235518851   15.42 16.5     ~ 291 1
12 NAME Cyg A Sy2 19 59 28.35645829 +40 44 02.0966496   16.22 15.10     ~ 2082 2
13 2MAXI J2042+751 Sy1 20 42 37.3081453418 +75 08 02.444858560     14.46 13.80   ~ 208 0
14 LEDA 68751 Sy1 22 23 49.7 -02 06 13   16.93 15.77 16.02   ~ 429 2
15 [PGM2010] NIR3 ? 22 23 52.480 -02 10 42.97           ~ 1 0
16 [PGM2010] NIR2 ? 22 23 52.610 -02 10 44.37           ~ 1 0
17 [PGM2010] X-ray ? 22 23 52.670 -02 10 43.29           ~ 1 0
18 [PGM2010] NIR1 ? 22 23 52.770 -02 10 43.67           ~ 1 0
19 [PGM2010] Radio ? 22 23 52.800 -02 10 43.54           ~ 1 0

    Equat.    Gal    SGal    Ecl

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2020.02.23-09:23:15

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