We report the BeppoSAX observations of 6 Flat Spectrum Radio Quasars. Three of them have a clear detection up to 100 keV with the PDS instrument. For 4 objects the X-ray spectrum is satisfactorily fitted by a power-law continuum with Galactic absorption. 2251+158 show the presence of absorption higher than the galactic value, while the spectrum of the source 0208-512 shows a complex structure, with evidence of absorption at low energy. We construct the Spectral Energy Distributions adding historical data to the broad band X-ray spectra obtained with BeppoSAX and reproduce them with a one-zone Synchrotron-Inverse Compton model (including both SSC and External Compton). The implications are briefly discussed.
Spectral energy distribution of flat spectrum radio quasars observed with BeppoSAX / Tavecchio, F., Maraschi, G., Ghisellini, G., Celotti, A.L., Chiappetti, L., Comastri, A., Fossati, G., Grandi, P., Pian, E., Tagliaferri, G., Treves, A., Sambruna, R.M.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 575:1(2002), pp. 137-144. [10.1086/341212]
Spectral energy distribution of flat spectrum radio quasars observed with BeppoSAX
Celotti, Anna Lisa;
2002-01-01
Abstract
We report the BeppoSAX observations of 6 Flat Spectrum Radio Quasars. Three of them have a clear detection up to 100 keV with the PDS instrument. For 4 objects the X-ray spectrum is satisfactorily fitted by a power-law continuum with Galactic absorption. 2251+158 show the presence of absorption higher than the galactic value, while the spectrum of the source 0208-512 shows a complex structure, with evidence of absorption at low energy. We construct the Spectral Energy Distributions adding historical data to the broad band X-ray spectra obtained with BeppoSAX and reproduce them with a one-zone Synchrotron-Inverse Compton model (including both SSC and External Compton). The implications are briefly discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
