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The XMM-Newton view of AGN with intermediate mass black holes
G. Miniutti, G. Ponti, J. E. Greene +3
We have observed with XMM-Newton four radiatively efficient active type 1 galaxies with black hole masses < 10^6 Msun, selected optically from the SDSS. We show here that their sof…
Giant cavities, cooling and metallicity substructure in Abell 2204
J. S. Sanders, A. C. Fabian, G. B. Taylor
We present results from deep Chandra and XMM-Newton observations of the relaxed X-ray luminous galaxy cluster Abell 2204. We detect metallicity inhomogeneities in the intracluster…
INTEGRAL and XMM-Newton Spectroscopy of GX 339-4 During Hard/Soft Intermediate and High/Soft States in the 2007 Outburst
M. D. Caballero-Garcia, J. M. Miller, M. Diaz Trigo +5
We present simultaneous XMM-Newton and INTEGRAL observations of the luminous black hole transient and relativistic jet source GX 339-4. GX 339-4 started an outburst on November of…
Collisional heating as the origin of filament emission in galaxy clusters
G. J. Ferland, A. C. Fabian, N. A. Hatch +4
[Abridged] Photoionization, whether by starlight or other sources, has difficulty in accounting for the observed spectra of the optical filaments that often surround central galaxi…
Simultaneous X-ray/optical/UV snapshots of active galactic nuclei from XMM-Newton: spectral energy distributions for the reverberation mapped sample
R. V. Vasudevan, A. C. Fabian
We employ contemporaneous optical, UV and X-ray observations from the XMM-Newton EPIC-pn and Optical Monitor (OM) archives to present, for the first time, simultaneous spectral ene…
Reflection dominated X-ray spectra of Narrow Line Seyfert 1 Galaxies: Mrk 478 and EXO 1346.2+2645
A. Zoghbi, A. C. Fabian, L. C. Gallo
Multi-epoch XMM-Newton spectra of the two Narrow Line Seyfert 1 (NLS1), Mrk 478 and EXO 1346.2+2645, are presented. The data were fitted with different models, including the relati…
Magnetic support of the optical emission line filaments in NGC 1275
A. C. Fabian, R. M. Johnstone, J. S. Sanders +4
The giant elliptical galaxy NGC 1275, at the centre of the Perseus cluster, is surrounded by a well-known giant nebulosity of emission-line filaments, which are plausibly about >10…
Detecting Sound-Wave-Like Surface Brightness Ripples in Cluster Cores
J. Graham, A. C. Fabian, J. S. Sanders
We investigate the observational requirements for the detection of sound-wave-like features in galaxy cluster cores. We calculate the effect of projection on the observed wave ampl…
Sound waves in the intracluster medium of the Centaurus cluster
J. S Sanders, A. C. Fabian
We report the discovery of ripple-like X-ray surface brightness oscillations in the core of the Centaurus cluster of galaxies, found with 200 ks of Chandra observations. The featur…
Direct X-ray Spectral Deprojection of Galaxy Clusters
H. R. Russell, J. S. Sanders, A. C. Fabian
Temperature, density and abundance profiles of the hot intracluster medium (ICM) are important diagnostics of the complex interactions of gravitational and feedback processes in th…
Rapid optical and X-ray timing observations of GX 339-4: flux correlations at the onset of a low/hard state
P. Gandhi, K. Makishima, M. Durant +6
We present the discovery of optical/X-ray flux correlations on rapid timescales in the low/hard state of the Galactic black hole GX 339-4. The source had recently emerged from outb…
X-ray observations of the galaxy cluster PKS 0745-191: To the virial radius, and beyond
Matthew R. George, Andrew C. Fabian, Jeremy S. Sanders +2
We measure X-ray emission from the outskirts of the cluster of galaxies PKS 0745-191 with Suzaku, determining radial profiles of density, temperature, entropy, gas fraction, and ma…
Exploring the disc/jet interaction in the radio-loud quasar 4C +74.26 with Suzaku
J. Larsson, A. C. Fabian, D. R. Ballantyne +1
We report on a 90 ks Suzaku observation of the radio-loud quasar 4C +74.26. The source was observed in its highest flux state to date, and we find that it brightened by about 20 pe…
XMM-Newton observations of the Narrow-Line Seyfert 1 galaxy Mrk 335 in an historical low X-ray flux state
Dirk Grupe, Stefanie Komossa, Luigi C. Gallo +5
We report the discovery of strong soft X-ray emission lines and a hard continuum above 2 keV in the Narrow-Line Seyfert 1 galaxy Mrk 335 during an extremely low X-ray flux state. M…
An Infrared Survey of Brightest Cluster Galaxies. II: Why are Some Brightest Cluster Galaxies Forming Stars?
Christopher P. O'Dea, Stefi A. Baum, George Privon +12
Quillen et al.(2007) presented an imaging survey with the {\it Spitzer Space Telescope} of 62 brightest cluster galaxies with optical line emission located in the cores of X-ray lu…
The inverse-Compton X-ray-emitting lobes of the high-redshift giant radio galaxy 6C 0905+39
M. C. Erlund, A. C. Fabian, Katherine M. Blundell
We present new XMM-Newton data of the high-redshift (z=1.883), Mpc-sized giant radio galaxy 6C 0905+39. The larger collecting area and longer observation time for our new data mean…
The origin of molecular hydrogen emission in cooling-flow filaments
G. J. Ferland, A. C. Fabian, N. A. Hatch +4
The optical filaments found in many cooling flows in galaxy clusters consist of low density ($\sim 10^3 \pcc$) cool ( K) gas surrounded by significant amounts of cosmic-…
The Accretion Disk Wind in the Black Hole GRO J1655-40
J. M. Miller, J. Raymond, C. S. Reynolds +3
We report on simultaneous Chandra/HETGS and RXTE observations of the transient stellar-mass black hole GRO J1655-40, made during its 2005 outburst. Chandra reveals a line-rich X-ra…
Initial Measurements of Black Hole Spin in GX 339-4 from Suzaku Spectroscopy
J. M. Miller, C. S. Reynolds, A. C. Fabian +6
We report on a deep Suzaku observation of the stellar-mass black hole GX 339-4 in outburst. A clear, strong, relativistically-shaped iron emission line from the inner accretion dis…
The Weak Shock in the Core of the Perseus Cluster
J. Graham, A. C. Fabian, J. S. Sanders
The dissipation of energy from sound waves and weak shocks is one of the most promising mechanisms for coupling AGN activity to the surrounding intracluster medium (ICM), and so of…
The Compton-thick quasar at the heart of the high-redshift giant radio galaxy 6C 0905+39
M. C. Erlund, A. C. Fabian, Katherine M. Blundell +1
Our XMM-Newton spectrum of the giant, high-redshift (z=1.88) radio galaxy 6C 0905+39 shows that it contains one of the most powerful, high-redshift, Compton-thick quasars known. It…