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A transient sub-Eddington black hole X-ray binary candidate in the dust lanes of Centaurus A
(2012-04-20)
We report the discovery of a bright X-ray transient CXOU J132527.6-430023 in the nearby early-type galaxy NGC5128. The source was first detected over the course of five Chandra observations in 2007, reaching an unabsorbed ...
An active galactic nucleus driven shock in the intracluster medium around the radio galaxy 3C310
(2012-04-10)
We present results from a 57.6 ks Chandra observation of the cluster gas associated with the fat-double radio galaxy 3C 310. We find a surface brightness discontinuity in the gas outside the southern radio lobe that we ...
Chandra X-ray Observations of the redshift 1.53, radio-loud quasar 3C 270.1
(2012-01-20)
Chandra X-ray observations of the high redshift (z =1.532) radio-loud quasar 3C270.1 in 2008 February show the nucleus to have a power-law spectrum, Gamma = 1.66 +/- 0.08, typical of a radio-loud quasar, and a marginally-detected ...
Magnetic Fields in Astrophysical Jets : From Launch to Termination
(2012)
Long-lived, stable jets are observed in a wide variety of systems, from protostars, through Galactic compact objects to active galactic nuclei (AGN). Magnetic fields play a central role in launching, accelerating, and ...
Large-scale components of radio galaxies in gamma rays
(American Institute of Physics (AIP), 2012-01-01)
The populations of relativistic electrons and high-energy cosmic rays in the extended components of radio-loud active galaxies-kiloparsec-scale jets, hotspots and lobes-make them, in principle, interesting sources of ...
Design concepts for the Cherenkov Telescope Array CTA : An advanced facility for ground-based high-energy gamma-ray astronomy
(2011-12-01)
Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in ...
The Dynamics of Radio Galaxies and Double-Double Radio Galaxies
(2011-12)
Relativistic and magnetized plasma ejected by radio loud AGNs through jets form the diffuse lobes of radio galaxies. The radiating particles (electron/electron-positron) in lobes emit in radio via the synchrotron process ...
The Suzaku view of the disk-jet connection in the low-excitation radio galaxy NGC 6251
(2011-11)
We present results from an 87 ks Suzaku observation of the canonical low-excitation radio galaxy (LERG) NGC6251. We have previously suggested that LERGs violate conventional active galactic nucleus unification schemes: ...
Herschel-ATLAS: the link between accretion luminosity and star formation in quasar host galaxies
(2011-09)
We use the science demonstration field data of the Herschel Astrophysical Terahertz Large Area Survey to study how star formation, traced by the far-infrared Herschel data, is related to both the accretion luminosity and ...
Clear detection of dusty torus signatures in a weak-line radio galaxy: the case of PKS 0043-42
(2011-06)
We report the clearest detection to date of dusty torus signatures in a weak-line radio galaxy (WLRG). The deep Spitzer InfraRed Spectrograph (IRS) rest-frame mid-infrared (MIR) spectrum of the WLRG PKS 0043-42 (z = 0.116) ...