2007A&A...468..571G


Query : 2007A&A...468..571G

2007A&A...468..571G - Astronomy and Astrophysics, volume 468, 571-579 (2007/6-3)

Swift detection of all previously undetected blazars in a micro-wave flux-limited sample of WMAP foreground sources.

GIOMMI P., CAPALBI M., CAVAZZUTI E., COLAFRANCESCO S., CUCCHIARA A., FALCONE A., KENNEA J., NESCI R., PERRI M., TAGLIAFERRI G., TRAMACERE A., TOSTI G., BLUSTIN A.J., BRANDUARDI-RAYMONT G., BURROWS D.N., CHINCARINI G., DEAN A.J., GEHRELS N., KRIMM H., MARSHALL F., PARSONS A.M. and ZHANG B.

Abstract (from CDS):

Almost the totality of the bright foreground sources in the WMAP Cosmic Microwave Background (CMB) maps are blazars, a class of sources that show usually also X-ray emission. However, 23 objects in a flux-limited sample of 140 blazars of the WMAP catalog (first year) were never reported before as X-ray sources. We present here the results of 41 Swift observations which led to the detection of all these 23 blazars in the 0.3-10keV band. We conclude that all micro-wave selected blazars are X-ray emitters and that the distribution of the micro-wave to X-ray spectral slope (αµx) of LBL blazars is very narrow, confirming that the X-ray flux of most blazars is a very good estimator of their micro-wave emission. The X-ray spectral shape of all the objects that were observed long enough to allow spectral analysis is flat and consistent with inverse Compton emission within the commonly accepted view where the radiation from blazars is emitted in a Sychrotron-Inverse-Compton scenario. We predict that all blazars and most radio galaxies above the sensitivity limit of the WMAP and of the Planck CMB missions are X-ray sources detectable by the present generation of X-ray satellites. An hypothetical all-sky soft X-ray survey with sensitivity of approximately 10–15erg/cm2/s would be crucial to locate and remove over 100000 blazars from CMB temperature and polarization maps and therefore accurately clean the primordial CMB signal from the largest population of extragalactic foreground contaminants.

Abstract Copyright:

Journal keyword(s): quasars: general - cosmology: cosmic microwave background - radiation mechanisms: non-thermal

Simbad objects: 26

goto Full paper

goto View the references in ADS

Number of rows : 26
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 7C 020209.69+315812.00 QSO 02 05 04.92536206 +32 12 30.0954703     18.00 17.40   ~ 213 1
2 QSO J0217+0144 QSO 02 17 48.95475095 +01 44 49.6990271   16.74 16.09 18.51 13.29 ~ 403 1
3 QSO B0511-220 QSO 05 13 49.11432318 -21 59 16.0921220   19.95 19.5 19.58   ~ 98 1
4 8C 0633+734 QSO 06 39 21.9609776712 +73 24 58.043668788   16.0 17.3 18.22   ~ 98 1
5 QSO B0805-077 QSO 08 08 15.53603763 -07 51 09.8865298     19.5 16.71   ~ 245 1
6 7C 1030+4131 Bla 10 33 03.70787172 +41 16 06.2329333   20.01 19.64 19.97   ~ 189 1
7 6C 104451+715930 QSO 10 48 27.61992778 +71 43 35.9384142     19.0 17.49   ~ 212 1
8 QSO B1206-238 BLL 12 09 02.44510958 -24 06 20.7591255   19.31 18.0 18.57   ~ 50 1
9 QSO B1213-172 QSO 12 15 46.75176509 -17 31 45.4031219     21.4 17.50   ~ 136 1
10 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5637 1
11 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 2923 2
12 QSO B1313-333 QSO 13 16 07.98594757 -33 38 59.1726741   18.04 20.0 17.23   ~ 240 1
13 QSO B1406-076 QSO 14 08 56.48120623 -07 52 26.6665312   20.3 18.4     ~ 293 1
14 QSO B1424-41 QSO 14 27 56.29756617 -42 06 19.4376238   18.48 17.7 16.30   ~ 450 1
15 4C 05.64 QSO 15 50 35.26924234 +05 27 10.4483641   19.10 18.73 19.02   ~ 311 1
16 ICRF J173340.7-793555 QSO 17 33 40.70024557 -79 35 55.7165873   18.67   18.18   ~ 45 1
17 QSO B1848+283 QSO 18 50 27.5898721080 +28 25 13.155071160   17.1 17 17.16   ~ 79 1
18 ICRF J190255.9+315941 Sy1 19 02 55.93889653 +31 59 41.7016439     17.5     ~ 266 2
19 ICRF J202206.6+613658 Sy2 20 22 06.68174620 +61 36 58.8047323     19.5 17.58   ~ 312 1
20 BWE 2209+2340 QSO 22 12 05.96631459 +23 55 40.5438259   19   19.69   ~ 208 1
21 AT20G J222940-083254 QSO 22 29 40.08433313 -08 32 54.4355294   17.80 17.41 17.81   ~ 329 1
22 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 2729 2
23 ICRF J225805.9-275821 Sy1 22 58 05.96287687 -27 58 21.2567572   17.34 16.77 17.20   ~ 335 1
24 QSO B2333-528 Bz? 23 36 12.14453637 -52 36 21.9510844   18.8       ~ 72 1
25 4C 45.51 QSO 23 54 21.68022501 +45 53 04.2365520   20.6 20.6 19.1   ~ 213 1
26 QSO B2355-534 BLL 23 57 53.26605016 -53 11 13.6895021   18.63 17.8 16.89   ~ 154 1

To bookmark this query, right click on this link: simbad:objects in 2007A&A...468..571G and select 'bookmark this link' or equivalent in the popup menu


2023.02.01-19:23:16

© Université de Strasbourg/CNRS

    • Contact