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Browsing by Author "Ponman, T.J."
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Active galactic nuclei heating in the centres of galaxy groups: a statistical study
Jetha, N.N.; Ponman, T.J.; Hardcastle, M.J.; Croston, J.H. (2007)We present gas temperature, density, entropy and cooling time profiles for the cores of a sample of 15 galaxy groups observed with Chandra.We find that the entropy profiles follow a power-law profile down to very small ... -
Chandra observations of the interacting galaxies NGC 3395/3396 (Arp 270)
Brassington, Nicola; Read, Andrew M.; Ponman, T.J. (2005-07-01)In this paper we present the results of a 20-ks high-resolution Chandra X-ray observation of the peculiar galaxy pair NGC 3395/3396, a system at a very early stage of merging, and less evolved than the famous Antennae and ... -
The Chandra view of galaxy mergers
Brassington, Nicola; Ponman, T.J.; Read, Andrew M. (2007-06-01)From a Chandra survey of nine interacting galaxy systems the evolution of X-ray emission during the merger process has been investigated. It is found that the X-ray luminosity peaks ~300Myr before nuclear coalescence, and ... -
The cool wake around 4c 34.16 as seen by XMM-Newton
Sakelliou, I.; Acreman, D.M.; Hardcastle, M.J.; Merrifield, M.; Ponman, T.J.; Stevens, I.R. (2005-07) -
Galaxy-cluster gas-density distributions of the Representative XMM-Newton Cluster Structure Survey (REXCESS)
Croston, J.H.; Pratt, G.W.; Boehringer, H.; Arnaud, M.; Pointecouteau, E.; Ponman, T.J.; Sanderson, A.J.R.; Temple, R.F.; Bower, R.; Donahue, M. (2008) -
Interactions of radio galaxies and the intracluster medium in Abell 160 and Abell 2462
Jetha, N.N.; Sakelliou, I.; Hardcastle, M.J.; Ponman, T.J.; Stevens, I.R. (2005-04) -
The nature of the ghost cavity in the NGC 741 group
Jetha, N.N.; Hardcastle, M.J.; Babul, A.; O'Sullivan, E.; Ponman, T.J.; Raychaudhury, S.; Vrtilek, J. (2008) -
The representative XMMM-Newton cluster structure survey (REXCESS) of an X-ray luminosity selected galaxy cluster sample
Boehringer, H.; Schuecker, P.; Pratt, G.W.; Arnaud, M.; Ponman, T.J.; Croston, J.H. (2007) -
Shock heating in the group atmosphere of the radio galaxy B2 0838+32A
Jetha, N.N.; Hardcastle, M.J.; Ponman, T.J.; Sakelliou, I. (2008)