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X-ray spectroscopy of radio-loud versus radio-quiet AGNs

Published online by Cambridge University Press:  24 November 2004

P. Grandi
Affiliation:
IASF (CNR-INAF), Sezione di Bologna, Via Gobetti 101, I-40129 Bologna, Italy
M. Fiocchi
Affiliation:
Universita' ‘La Sapienza’ di Roma, Italy ASI Science data Center, Frascati, Roma, Italy
G. G. C. Palumbo
Affiliation:
Universita' degli Studi di Bologna, Italy
M. Guainazzi
Affiliation:
XMM-Newton SOC, Vilspa, Spain
L. Maraschi
Affiliation:
Osservatorio Astronomico di Brera, Milano, Italy
R. Morganti
Affiliation:
ASTRON, PO Box 2, 7990 AA Dwingeloo, The Netherlands
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Abstract

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A systematic study of 30 Radio Loud AGNs available in the BeppoSAX archive has been carried out. The sample consists of 9 Broad Line radio Galaxies, 5 Steep Spectrum Radio Quasars and 16 Flat Spectrum Radio Quasars. These objects represent, according to Unified Models, objects with decreasing viewing angles. Our analysis shows considerable differences between FSRQs and BLRGs'SSRQS. As expected in the AGN Unified Model: i) the X-Ray spectrum of FSRQs is a simple power law with a hard spectral slope (the only exception being 3C273), ii) Broad Line and Steep Radio Spectrum AGNs show a steeper X-Ray continuum and Seyfert like features. We also find that the Fe line is weaker than in radio quiet objects. However no strong evidence emerges that a jet contamination may be the main responsible for the EW shrinking in BLRGs and SSRQs. Recent XMM-Newton observations of Pictor A, 3C445 and PKS 2152-69 confirm the nuclear BeppoSAX results and better constrain the Fe line parameters.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
POSTERS
Copyright
© 2004 International Astronomical Union