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Now showing items 11-19 of 19
X-Ray Nuclei in Radio Galaxies: Exploring the Roles of Hot and Cold Gas Accretion
(Astronomical Society of the Pacific, 2008)
We present results from Chandra and XMM-Newton spectroscopic observations of the nuclei of z < 0.5 radio galaxies and quasars from the 3CRR catalog, and examine in detail the dichotomy in the properties of low- and ...
A Transient Black-Hole Low-Mass X-Ray Binary Candidate in Centaurus A
(2008)
We report the discovery of a bright transient X-ray source, CXOU J132518.2–430304, toward Centaurus A (Cen A) using six new Chandra X-Ray Observatory observations in 2007 March-May. Between 2003 and 2007, its flux has ...
Hotspots, Jets and Environments
(Astronomical Society of the Pacific, 2008)
I discuss the nature of ‘hotspots’ and ‘jet knots’ in the kpc-scale structures of powerful radio galaxies and their relationship to jet-environment interactions. I describe evidence for interaction between the jets of FRI ...
3C 40 in Abell 194: can tail radio galaxies exist in quiescent cluster
(2008)
The nearby cluster Abell 194 hosts two luminous, distorted radio galaxies. Both reside within the cluster’s core region, being separated in projection by only 100 kpc. It is often suggested that tailed radio galaxies such ...
XMM-Newton Observations of the Nuclei of the Radio Galaxies 3C 305, DA 240, and 4C 73.08
(2008)
We present new XMM-Newton EPIC observations of the nuclei of the nearby radio galaxies 3C 305, DA 240, and 4C 73.08, and investigate the origin of their nuclear X-ray emission. The nuclei of the three sources appear to ...
Inverse-Compton emission from the lobes of 3C 353
(2008)
X-ray emission due to inverse-Compton scattering of microwave background photons by electrons in the lobes of powerful radio galaxies has now been seen in a large number of objects. Combining an inverse-Compton model for ...
Deep Chandra Observations of the Centaurus A Jet
(Astronomical Society of the Pacific, 2008)
Chandra has observed the jet of Centaurus A for 560 ks in 2007, giving a total on-source observation time since the launch of Chandra of 720 ks. Combining these datasets gives us a uniquely detailed X-ray view of the jet ...