Brightest Cluster Galaxies and Core Gas Density in REXCESS Clusters (2009)
Haarsma, D. B., Leisman, L., Donahue, M., Bruch, S., Boehringer, H., Croston, J. H., ...
We investigate the relationship between brightest cluster galaxies (BCGs) and their host clusters using a sample of nearby galaxy clusters from the Representative XMM-Newton Cluster Structure Survey...
Goodger, J. L., Hardcastle, M. J., Croston, J. H., Kraft, R. P., Birkinshaw, M., Evans, D. A., ...
We present new and archival multi-frequency radio and X-ray data for Centaurus A obtained over almost 20 years at the VLA and with Chandra, with which we measure the X-ray and radio spectral indices...
Arnaud, M., Pratt, G. W., Piffaretti, R., Boehringer, H., Croston, J. H., Pointecouteau, E.
(abridged) We investigate the regularity of cluster pressure profiles with REXCESS, a representative sample of 33 local clusters observed with XMM-Newton. The sample spans a mass range of 10^14 M_sun
Pratt, G. W., Arnaud, M., Piffaretti, R., Boehringer, H., Ponman, T. J., Croston, J. H., ...
(Abridged) We examine the radial entropy distribution and its scaling using 31 nearby galaxy clusters from the Representative XMM-Newton Cluster Structure Survey (REXCESS). The entropy profiles are...
The dynamics of the giant radio galaxy 3C 457 (2009)
Konar, C., Hardcastle, M. J., Croston, J. H., Saikia, D. J.
We present multi-frequency radio observations with the Giant Metrewave Radio Telescope and Very Large Array, and X-ray observations with the X-ray Multi-Mirror Mission ({\it XMM-Newton}) telescope of...
Luminosity functions of LMXBs in Centaurus A: globular clusters versus the field (2009)
Voss, R., Gilfanov, M., Sivakoff, G. R., Kraft, R. P., Jordan, A., Raychaudhury, S., ...
We study the X-ray luminosity function (XLF) of low mass X-ray binaries (LMXB) in the nearby early-type galaxy Centaurus A, concentrating primarily on two aspects of binary populations: the XLF...
Hardcastle, M. J., Evans, D. A., Croston, J. H.
We combine Chandra and XMM-Newton X-ray data from our previous papers with new X-ray observations and with Spitzer mid-infrared data in order to study the nature of the nuclei of radio galaxies and...
The Jet-Heated X-ray Filament in the Centaurus A Northern Middle Radio Lobe (2009)
Kraft, R. P., Forman, W. R., Hardcastle, M. J., Birkinshaw, M., Croston, J. H., Jones, C., ...
We present results from a 40 ks {\em XMM-Newton} observation of the X-ray filament coincident with the southeast edge of the Centaurus A Northern Middle Radio Lobe (NML). We find that the X-ray...
1. AN IMPROVED TECHIQUE FOR MEASUR- ING GAS DENSITY PROFILES (2009)
J. H. Croston, M. Arnaud, G. W. Pratt, H. Böhringer
We present an improved technique for the deprojection and PSF-deconvolution of X-ray surface brightness profiles of galaxy clusters. Our method is tested using simulated profiles, XMM-Newton and...
High-energy particle acceleration at the radio-lobe shock of Centaurus A (2009)
Croston, J. H., Kraft, R. P., Hardcastle, M. J., Birkinshaw, M., Worrall, D. M., Nulsen, P. E. J., ...
We present new results on the shock around the southwest radio lobe of Centaurus A using data from the Chandra Very Large Programme observations. The X-ray spectrum of the emission around the outer...
Pratt, G.W., Croston, J.H., Arnaud, M., Boehringer, H.
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO) DOI: 10.1051/0004-6361/200810994
High-energy particle acceleration at the radio-lobe shock of Centaurus A (2009)
Croston, J. H., Kraft, R. P., Hardcastle, M. J., Birkinshaw, M., Worrall, D. M., Nulsen, P. E. J., ...
The jet heated x-ray filament in the Centaurus A northern middle radio lobe. (2009)
Kraft, R.P., Forman, W.R., Hardcastle, M.J., Birkinshaw, M., Croston, J.H., Jones, C., ...
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society. DOI: 10.1088/0004-637X/698/2/2036 [Full text of this article is not available in the UHRA]
Luminosity functions of LMXBs in Centaurus A: globular clusters versus the field. (2009)
Voss, R., Gilfanov, M., Sivakoff, G.R., Kraft, R.P., Jordan, A., Raychaudhury, S., ...
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society. DOI: 10.1088/0004-637X/701/1/471 [Full text of this article is not available in the UHRA]
High-energy particle acceleration at the radio-lobe shock of Centaurus A. (2009)
Croston, J.H., Kraft, R.P., Hardcastle, M.J., Birkinshaw, M., Worrall, D.M., Nulsen, P.E.J., ...
‘The definitive version is available at www3.interscience.wiley.com '. Copyright Blackwell Publishing / Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2009.14715.x
Pratt, G. W., Croston, J. H., Arnaud, M., Boehringer, H.
(Abridged) We examine the X-ray luminosity scaling relations of 31 nearby galaxy clusters from the Representative XMM-Newton Cluster Structure Survey (REXCESS). The objects are selected in X-ray...
Chandra evidence for AGN feedback in the spiral galaxy NGC 6764 (2008)
Croston, J. H., Hardcastle, M. J., Kharb, P., Kraft, R. P., Hota, A.
We report the Chandra detection of X-ray emission spatially coincident with the kpc-scale radio bubbles in the nearby (D_L ~ 31 Mpc) AGN-starburst galaxy NGC 6764. The X-ray emission originates in...
Evidence for Non-Hydrostatic Gas Motions in the Hot ISM of Centaurus A (2008)
Kraft, R. P., Hardcastle, M. J., Sivakoff, G. R., Jordán, A., Nulsen, P. E. J., Birkinshaw, M., ...
We present preliminary results from a deep (600 ks) {\em Chandra} observation of the hot interstellar medium of the nearby early-type galaxy Centaurus A (Cen A). We find a surface brightness...
Croston, J. H., Hardcastle, M. J., Birkinshaw, M., Worrall, D. M., Laing, R. A.
We present a detailed study of the environments of a sample of nine low-power radio galaxies, based on new and archival XMM-Newton observations. We report new detections of group-scale environments...
Inverse-Compton emission from the lobes of 3C 353 (2008)
Goodger, J. L., Hardcastle, M. J., Croston, J. H., Kassim, N. E., Perley, R. A.
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...
Croston, J. H., Pratt, G. W., Boehringer, H., Arnaud, M., Pointecouteau, E., Ponman, T. J., ...
We present a study of the structural and scaling properties of the gas distributions in the intracluster medium (ICM) of 31 nearby (z < 0.2) clusters observed with XMM-Newton, which together comprise...
Deep Chandra Observations of the Centaurus A Jet. (2008)
Hardcastle, M.J., Kraft, R.P., Goodger, J.L., Croston, J.H., Sivakoff, G.R., Jordan, A., ...
Inverse-Compton emission from the lobes of 3C 353. (2008)
Goodger, J.L., Hardcastle, M.J., Croston, J.H., Kassim, N.E., Perley, R.A.
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing DOI: 10.1111/j.1365-2966.2008.13028.x
Croston, J.H., Hardcastle, M.J., Birkinshaw, M., Worrall, D.M., Laing, R.A.
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing DOI: 10.1111/j.1365-2966.2008.13162.x
Chandra evidence for AGN feedback in the spiral galaxy NGC 6764. (2008)
Croston, J.H., Hardcastle, M.J., Kharb, P., Kraft, R.P., Hota, A.
Original article can be found at: http://www.journals.uchicago.edu/loi/apj Copyright The American Astronomical Society DOI: 10.1086/592268 [ Full text of this article is not available in the UHRA]
XMM-Newton Observations of the Nuclei of the Radio Galaxies 3C 305, DA 240, and 4C 73.08. (2008)
Evans, D.A., Hardcastle, M.J., Lee, J.C., Kraft, R.P., Worrall, D.M., Birkinshaw, M., ...
Original article can be found at: http://www.journals.uchicago.edu/loi/ApJ/ Copyright American Astronomical Society DOI: 10.1086/592266 [Full text of this article is not available in the UHRA]
Where Centaurus A gets its X-ray knottiness. (2008)
Worrall, D.M., Birkinshaw, M., Kraft, R.P., Sivakoff, G.R., Jordan, A., Hardcastle, M.J., ...
Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1086/528681 [Full text of this article is not available in the UHRA]
A Transient Black-Hole Low-Mass X-Ray Binary Candidate in Centaurus A. (2008)
Sivakoff, G.R., Kraft, R.P., Jordan, A., Juett, A.M., Evans, D.A., Forman, W.R., ...
Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1086/587960 [Full text of this article is not available in the UHRA]
Evidence for Non-Hydrostatic Gas Motions in the Hot Interstellar Medium of Centaurus A. (2008)
Kraft, R.P., Hardcastle, M.J., Sivakoff, G.R., Jordan, A., Nulsen, P.E.J., Birkinshaw, M., ...
Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1086/588023 [Full text of this article is not available in the UHRA]
XMM-Newton Observations of the Nuclei of the Radio Galaxies 3C 305, DA 240, and 4C 73.08. (2008)
Evans, A., Hardcastle, M.J., Lee, J.C., Kraft, R.P., Worrall, D.M., Birkinshaw, M., ...
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society DOI: 10.1086/592266 [Full text of this article is not available in the UHRA]
A Radio through X-Ray Study of the Jet/Companion-Galaxy Interaction in 3C 321. (2008)
Evans, D.A., Fong, W-F., Hardcastle, M.J., Kraft, R.P., Lee, J.C., Worrall, D.M., ...
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society. DOI: 10.1086/527410 [Full text of this article is not available in UHRA]
Croston, J.H., Pratt, G.W., Boehringer, H., Arnaud, M., Pointecouteau, E., Ponman, T.J., ...
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO). DOI: 10.1051/0004-6361:20079154
Where Centaurus A gets its X-ray knottiness (2007)
Worrall, D. M., Birkinshaw, M., Kraft, R. P., Sivakoff, G. R., Jordan, A., Hardcastle, M. J., ...
We report an X-ray spectral study of the transverse structure of the Centaurus A jet using new data from the Chandra Cen A Very Large Project. We find that the spectrum steepens with increasing...
Hardcastle, M. J., Kraft, R. P., Sivakoff, G. R., Goodger, J. L., Croston, J. H., Jordan, A., ...
We present new deep Chandra observations of the Centaurus A jet, with a combined on-source exposure time of 719 ks. These data allow detailed X-ray spectral measurements to be made along the jet out...
A Chandra study of particle acceleration in the multiple hotspots of nearby radio galaxies (2007)
Hardcastle, M. J., Croston, J. H., Kraft, R. P.
We present Chandra observations of a small sample of nearby classical double radio galaxies which have more than one radio hotspot in at least one of their lobes. The X-ray emission from the hotspots...
X-Ray Nuclei in Radio Galaxies: Exploring the Roles of Hot and Cold Gas Accretion (2007)
Evans, D. A., Hardcastle, M. J., Croston, J. H.
We present results from Chandra and XMM-Newton spectroscopic observations of the nuclei of z
Inverse-Compton emission from the lobes of 3C353 (2007)
Goodger, J. L., Hardcastle, M. J., Croston, J. H.
Analysis of the radio synchrotron and X-ray inverse-Compton emission from radio-loud active galaxies allows us to determine their particle acceleration processes and electron energy spectra. Previous...
Jet/environment interactions in low-power radio galaxies (2007)
The interactions between low-power radio galaxies and their environments are thought to play a crucial role in supplying energy to offset cooling in the centres of groups and clusters. Such...
Boehringer, H., Schuecker, P., Pratt, G. W., Arnaud, M., Ponman, T. J., Croston, J. H., ...
The largest uncertainty for cosmological studies using clusters of galaxies is introduced by our limited knowledge of the statistics of galaxy cluster structure, and of the scaling relations between...
The interaction between radio lobes and hot gas in the nearby radio galaxies 3C285 and 3C442A (2007)
Hardcastle, M. J., Kraft, R. P., Worrall, D. M., Croston, J. H., Evans, D. A., Birkinshaw, M., ...
We present Chandra observations of two nearby radio galaxies in group environments, 3C285 and 3C442A. The host galaxies of both sources are involved in mergers with nearby massive galaxies, and the...
Shock heating in the nearby radio galaxy NGC 3801 (2007)
Croston, J. H., Kraft, R. P., Hardcastle, M. J.
We report the Chandra detection of shock-heated shells of hot gas surrounding the radio lobes of the nearby (D_L ~ 53 Mpc) low-power radio galaxy NGC 3801. The shells have temperatures of 1 keV and...
Hot and cold gas accretion and feedback in radio-loud active galaxies (2007)
Hardcastle, M. J., Evans, D. A., Croston, J. H.
We have recently shown that X-ray observations of the population of `low-excitation' radio galaxies, which includes most low-power, Fanaroff-Riley class I sources as well as some more powerful...
Kraft, R. P., Birkinshaw, M., Hardcastle, M. J., Evans, D. A., Croston, J. H., Worrall, D. M., ...
We present results from {\em Chandra}/ACIS-S, {\em Spitzer}, {\em XMM-Newton}, {\em HST}, and VLA observations of the radio hot spots, extended environment, and nucleus of the nearby ($z$=0.0597) FR...
Temperature profiles of a representative sample of nearby x-ray galaxy clusters. (2007)
Pratt, G.W., Boehringer, H., Croston, J.H., Arnaud, M., Borgani, S., Finoguenov, A., ...
Temperature profiles of a representative sample of nearby X-ray galaxy clusters (2007)
Pratt, G. W., Böhringer, H., Croston, J. H., Arnaud, M., Borgani, S., Finoguenov, A., ...
Temperature profiles of a representative sample of nearby X-ray galaxy clusters (2007)
Pratt, G. W., Böhringer, H., Croston, J. H., Arnaud, M., Borgani, S., Finoguenov, A., ...
Hardcastle, M.J., Kraft, R.P., Sivakoff, G.R., Goodger, J.L., Croston, J.H., Jordan, A., ...
Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1086/524197 [Full text of this article is not available in the UHRA]
Hardcastle, M.J., Kraft, R.P., Worrall, D.M., Croston, J.H., Evans, D.A., Birkinshaw, M., ...
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society. DOI: 10.1086/517997 [Full text of this article is not available in the UHRA]
Kraft, R.P., Birkinshaw, M., Hardcastle, M.J., Evans, D.A., Croston, J.H., Worrall, D.M., ...
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society. DOI: 10.1086/512766 [Full text of this article is not available in the UHRA]
Low-Mass X-ray Binaries and Globular Clusters in Centaurus A. (2007)
Jordan, A., Sivakoff, G.R., McLaughlin, D.E., Blakeslee, J.P., Evans, D.A., Kraft, R.P., ...
Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society. DOI: 10.1086/525524 [Full text of this article is not available in the UHRA]
D. M. Worrall, M. Birkinshaw, R. P. Kraft, G. R. Sivakoff, A. Jordán, M. J. Hardcastle, ...
We report an X-ray spectral study of the transverse structure of the Centaurus A jet using new data from the Chandra Cen A Very Large Project. We find that the spectrum steepens with increasing...
Shock heating by nearby AGN (2006)
Croston, J. H., Kraft, R. P., Hardcastle, M. J.
Shock heating by radio jets is potentially an important process in a range of environments, as it will increase the entropy of the heated gas. Although this process is expected to occur in the most...
Temperature profiles of a representative sample of nearby X-ray galaxy clusters (2006)
Pratt, G. W., Boehringer, H., Croston, J. H., Arnaud, M., Borgani, S., Finoguenov, A., ...
A study of the structural and scaling properties of the temperature distribution of the hot, X-ray emitting intra-cluster medium of galaxy clusters, and its dependence on dynamical state, can give...
Croston, J. H., Arnaud, M., Pointecouteau, E., Pratt, G. W.
We have developed a regularisation procedure for the direct deprojection and PSF-deconvolution of X-ray surface brightness profiles of clusters of galaxies. This procedure allows us to obtain...
The X-ray nuclei of intermediate-redshift radio sources (2006)
Hardcastle, M. J., Evans, D. A., Croston, J. H.
We present a Chandra and XMM-Newton spectral analysis of the nuclei of the radio galaxies and radio-loud quasars from the 3CRR sample in the redshift range 0.1 < z < 0.5. In the range of radio...
Temperature profiles of a representative sample of nearby X-ray galaxy clusters. (2006)
Pratt, G.W., Boehringer, H., Croston, J.H., Arnaud, M., Borgani, S.
Croston, J.H., Arnaud, M., Pointcouteau, E., Pratt, G.W.
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory DOI: 10.1051/0004-6361:20065795
FRII sources at z>0.5: X-ray properties of the core and extended emission (2005)
Belsole, E., Croston, J. H., Worrall, D. M., Hardcastle, M. J.
Active galaxies are the most powerful engines in the Universe for converting gravitational energy into radiation, and their study at all epochs of evolution is therefore important. Powerful...
The Chandra view of extended X-ray emission from Pictor A (2005)
Hardcastle, M. J., Croston, J. H.
We discuss the extended X-ray emission seen in three archival Chandra observations, and one archival XMM-Newton observation, of the FRII radio galaxy Pictor A. The overall properties of the X-ray...
An X-ray study of magnetic field strengths and particle content in FRII radio sources (2005)
Croston, J. H., Hardcastle, M. J., Harris, D. E., Belsole, E., Birkinshaw, M., Worrall, D. M.
We present a Chandra and XMM-Newton study of X-ray emission from the lobes of 33 classical double radio galaxies and quasars. We report new detections of lobe-related X-ray emission in 11 sources....
Chandra and XMM-Newton Observations of NGC 6251 (2005)
Evans, D. A., Hardcastle, M. J., Croston, J. H., Worrall, D. M., Birkinshaw, M.
We present new X-ray observations of the nucleus, jet and extended emission of the nearby radio galaxy NGC 6251 using the Chandra/ACIS-S camera, together with a reanalysis of archival Chandra/ACIS-I...
Chandra and XMM-Newton observations of NGC 6251. (2005)
Evans, D.A., Hardcastle, M.J., Croston, J.H., Worrall, D.M., Birkinshaw, M.
Evidence for radio-source heating of groups (2004)
Croston, J. H., Hardcastle, M. J., Birkinshaw, M.
We report evidence that the gas properties of X-ray groups containing radio galaxies differ from those of radio-quiet groups. For a well-studied sample of ROSAT-observed groups, we found that more...
X-ray emission from the nuclei, lobes and hot-gas environments of two FR II radio galaxies (2004)
Croston, J.H., Birkinshaw, M., Hardcastle, M.J., Worrall, D.M.
X-ray emission from the nuclei, lobes and hot-gas environments of two FR-II radio galaxies (2004)
Croston, J. H., Birkinshaw, M., Hardcastle, M. J., Worrall, D. M.
We report the detection of multiple components of X-ray emission from the two FR-II radio galaxies 3C 223 and 3C 284, based on new XMM-Newton observations. We attribute the detected X-ray emission...
Jet/environment interactions of FR-I and FR-II radio galaxies (2004)
Croston, J. H., Hardcastle, M. J., Birkinshaw, M., Worrall, D. M.
We present the results of new XMM observations of FR-I and FR-II radio galaxies that show the importance of jet/environment interactions for both radio-source structure and the properties of the...
Jet/Environment Interactions of FRI and FRII Radio Galaxies. (2004)
Croston, J.H., Hardcastle, M.J., Birkinshaw, M., Worrall, D.M.
Original paper can be found at: http://www.aoc.nrao.edu/events/xraydio/
Interactions of low-power radio galaxies with their hot-gas environments. (2004)
Croston, J.H., Hardcastle, M.J., Birkinshaw, M., Worrall, D.M.
Original article can be found at: http://www.sciencedirect.com/science/journal/09205632 Copyright Elsevier B.V. DOI: 10.1016/j.nuclphysbps.2004.04.024 [Full text of this article is not available in...
XMM-Newton observations of the hot-gas atmospheres of 3C 66B and 3C 449 (2003)
Croston, J.H., Hardcastle, M.J., Birkinshaw, M., Worrall, D.M.
XMM-Newton observations of the hot-gas atmospheres of 3C 66B and 3C 449 (2003)
Croston, J. H., Hardcastle, M. J., Birkinshaw, M., Worrall, D. M.
We present new XMM-Newton observations of the hot-gas environments of two low-power twin-jet radio galaxies, 3C 66B and 3C 449, showing direct evidence for the interactions between X-ray-emitting gas...
The optical jet in 3C 31 on 15 arcsec scales. (2003)
Croston, J.H., Birkinshaw, M., Conway, E., Davies, R.L.
‘The definitive version is available at www.blackwell-synergy.com '. Copyright Blackwell Publishing. DOI: 10.1046/j.1365-8711.2003.06145.x [Full text of this article is not available in the UHRA]