2002ApJ...575..137T

Query : 2002ApJ...575..137T

2002ApJ...575..137T - Astrophys. J., 575, 137-144 (2002/August-2)

Spectral energy distributions of flat-spectrum radio quasars observed with BeppoSAX.

TAVECCHIO F., MARASCHI L., GHISELLINI G., CELOTTI A., CHIAPPETTI L., COMASTRI A., FOSSATI G., GRANDI P., PIAN E., TAGLIAFERRI G., TREVES A. and SAMBRUNA R.

Abstract (from CDS):

We report the BeppoSAX observations of six flat-spectrum radio quasars. Three of them have a clear detection up to 100 keV with the PDS instrument. For four objects the X-ray spectrum is satisfactorily fitted by a power-law continuum with Galactic absorption. QSO 2251+158 shows the presence of absorption higher than the Galactic value, while the spectrum of the source QSO 0208-512 shows a complex structure, with evidence of absorption at low energy. We construct the spectral energy distributions adding historical data to the broadband X-ray spectra obtained with BeppoSAX and reproduce them with a one-zone synchrotron-inverse Compton model (including both synchrotron self-Compton and external Compton). The implications are briefly discussed.

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Journal keyword(s): Galaxies: Quasars: General - quasars: individual (QSO 0208-512, QSO 0521-365) - Galaxies: Quasars: Individual: Alphanumeric: QSO 1641+399 - Galaxies: Quasars: Individual: Alphanumeric: QSO 2223-052 - quasars: individual (QSO 2243-123, QSO 2251+158) - Radiation Mechanisms: Nonthermal - X-Rays: Galaxies

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 QSO B0208-512 BLL 02 10 46.2004407600 -51 01 01.893013392   17.10 16.93 14.82   ~ 485 1
2 ESO 362-21 BLL 05 22 57.98464178 -36 27 30.8512953   15.26 14.62 14.48   ~ 873 2
3 QSO J0530+13 Bla 05 30 56.41674741 +13 31 55.1494688     20.00 19.35   ~ 1004 1
4 QSO B0537-441 BLL 05 38 50.36155950 -44 05 08.9390233   15.77 16.48 16   ~ 924 2
5 4C 71.07 Bla 08 41 24.36528508 +70 53 42.1730435     17.30 16.8   ~ 818 1
6 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
7 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
8 3C 345 Bla 16 42 58.80997043 +39 48 36.9939552   16.81 16.59 16.84   ~ 1808 3
9 NGC 6212 Sy1 16 43 23.1383858952 +39 48 23.179575348   15.0       ~ 81 0
10 3C 446 BLL 22 25 47.25929101 -04 57 01.3907626   18.83 18.39 16.3   ~ 863 1
11 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2
12 QSO J2246-1206 Bla 22 46 18.23197022 -12 06 51.2775983   16.63 16.45 15.99   ~ 293 1
13 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2

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