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Swift XRT and UVOT deep observations of the high energy peaked BL Lac object PKS 0548-322 close to its brightest state
M. Perri, A. Maselli, P. Giommi +11
We present the results of a spectral analysis of 5 Swift XRT and UVOT observations of the BL Lac object PKS 0548-322 carried out over the period April-June 2005. The X-ray flux of…
The jet/disk connection in AGN: Chandra and XMM observations of three powerful radio-loud quasars
R. M. Sambruna, M. Gliozzi, F. Tavecchio +2
The connection between the accretion process that powers AGN and the formation of jets is still poorly understood. Here we tackle this issue using new, deep \chandra and \xmm obser…
Swift and infra-red observations of the blazar 3C~454.3 during the giant X-ray flare of May 2005
P. Giommi, A. J. Blustin, M. Capalbi +16
We present the results of a series of Swift and quasi simultaneous ground-based infra-red observations of the blazar 3C 454.3 carried out in April-May 2005 when the source was 10 t…
Shedding New Light on the 3C 273 Jet with the Spitzer Space Telescope
Y. Uchiyama, C. M. Urry, C. C. Cheung +7
We have performed infrared imaging of the jet of the quasar 3C 273 at wavelengths 3.6 and 5.8 microns with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. When com…
Discovery of an Extreme MeV Blazar with the Swift Burst Alert Telescope
Rita M. Sambruna
The Burst Alert Telescope (BAT) onboard Swift detected bright emission from 15--195 keV from the source SWIFT~J0746.3+2548 (J0746 in the following), identified with the optically-f…
Long-Term X-Ray and TeV variability of Mrk 501
M. Gliozzi, R. Sambruna, I. Jung +3
We present X-ray observations of the blazar Mrk501 obtained with RXTE during 1997, 1998, 1999, 2000, and 2004. The goal of this study is twofold: 1) characterize the long-term X-ra…
An Exploratory Chandra Survey of a Well-Defined Sample of 35 Large Bright Quasar Survey Broad Absorption Line Quasars
S. C. Gallagher, W. N. Brandt, G. Chartas +3
We present 4-7 ks Chandra observations of 35 Broad Absorption Line (BAL) quasars from the Large Bright Quasar Survey, the largest sample of sensitive, 0.5-8.0 keV X-ray observation…
Jet deceleration: the case of PKS 1136-135
F. Tavecchio, L. Maraschi, R. M. Sambruna
Modeling the multiwavelength emission of successive regions in the jet of the quasar PKS 1136-135 we find indication that the jet suffers deceleration near its end. Adopting a cont…