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Modelling TeV gamma-ray emission from the kiloparsec-scale jets of Centaurus A and M87
(2011-03-09)
The widespread detection of synchrotron X-ray emission from the jets of low-power, nearby radio galaxies implies the presence of electrons at and above TeV energies. In this paper we explore the possibility that the TeV ...
The dynamics and environmental impact of 3C452
(2011)
We present a detailed analysis of a new XMM-Newton observation of the Fanaroff-Riley type II (FR II) radio galaxy 3C452 and its environment. We detect X-ray emission from the hot intragroup medium and measure its temperature ...
Markarian 6 : shocking the environment of an intermediate Seyfert
(2011)
Markarian 6 is a nearby (D ~ 78 Mpc) Seyfert 1.5, early-type galaxy, with a double set of radio bubbles. The outer set spans similar to 7.5 kpc and is expanding into the halo regions of the host galaxy. We present an ...
The gas dynamics of NGC 4472 revealed by XMM-Newton
(2011)
We present results from a 100 ks XMM-Newton observation of the hot gas in the Virgo cluster elliptical galaxy NGC 4472. We find a surface brightness discontinuity ∼21 kpc north of the nucleus, consistent with being a contact ...
Revealing the gamma-ray jet in a black hole binary
(2011)
An important advance in high-energy astrophysics over the past decade has been the detailed understanding of the nature of binary stellar systems in which material from an ordinary star is being accreted on to a compact ...
A large-scale shock surrounding a powerful radio galaxy?
(2011)
We report Chandra evidence for a 200 kpc scale shock in the cluster surrounding the powerful radio galaxy 3C444. Our 20 ks observation allows us to identify a clear surface brightness drop around the outer edge of the radio ...
The Herschel ATLAS
(2010-05-01)
The Herschel ATLAS is the largest open-time key project that will be carried out on the Herschel Space Observatory. It will survey 570 deg2 of the extragalactic sky, 4 times larger than all the other Herschel extragalactic ...
Which radio galaxies can make the highest energy cosmic rays?
(2010)
Numerous authors have suggested that the ultra-high-energy cosmic rays (UHECR) detected by the Pierre Auger Observatory and other cosmic ray telescopes may be accelerated in the nuclei, jets or lobes of radio galaxies. ...
Herschel-ATLAS: far-infrared properties of radio-selected galaxies
(2010)
We use the Herschel-Astrophysical Terahertz Large Area Survey (ATLAS) science demonstration data to investigate the star formation properties of radio-selected galaxies in the GAMA-9h field as a function of radio luminosity ...
Searching for the inverse-Compton emission from bright cluster-centre radio galaxies
(2010)
We use deep archival Chandra and XMM–Newton observations of three of the brightest cluster-centre radio galaxies in the sky, Cygnus A, Hercules A and Hydra A, to search for inverse-Compton emission from the population of ...