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121 papers · 2 filters
Optical Spectral Properties of Swift BAT Hard X-ray Selected Active Galactic Nuclei Sources
Lisa M. Winter, Karen T. Lewis, Michael Koss +3
The Swift Burst Alert Telescope (BAT) survey of Active Galactic Nuclei (AGN) is providing an unprecedented view of local AGNs (<z> = 0.03) and their host galaxy properties. In this…
PKS 2005-489 at VHE: Four Years of Monitoring with HESS and Simultaneous Multi-wavelength Observations
The HESS Collaboration, F. Acero
VHE observations of PKS 2005-489 were made with HESS from 2004 through 2007, together with three simultaneous multi-wavelength campaigns performed with XMM-Newton and RXTE in 2004…
Substructure of the galaxy clusters in the REXCESS sample: observed statistics and comparison to numerical simulations
H. Boehringer, G. W. Pratt, M. Arnaud +6
We study the substructure statistics of a representative sample of galaxy clusters by means of two currently popular substructure characterisation methods, power ratios and centroi…
XMM-Newton long-look observation of the narrow line Seyfert 1 galaxy PKS0558-504; I: Spectral analysis
I. E. Papadakis, W. Brinkmann, M. Gliozzi +3
We present results from the spectral analysis of a long XMM-Newton observation of the radio-loud NLS1 galaxy PKS0558-504. The source is highly variable, on all sampled time scales.…
On the progenitor and early evolution of the type II supernova 2009kr
M. Fraser, K. Takats, A. Pastorello +13
We report the identification of a source coincident with SN 2009kr in HST pre-explosion images. The object appears to be a single point source with an intrinsic colour V-I = 1.1 an…
A synthetic view of AGN evolution and supermassive black holes growth
Andrea Merloni
I will describe the constraints available from a study of AGN evolution synthesis models on the growth of the supermassive black holes (SMBH) population in the two main 'modes' obs…