Search Publications
Galaxy cluster X-ray luminosity scaling relations from a representative local sample (REXCESS)
Böhringer, H.; Arnaud, M.; Pratt, G. W. +1 more
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 only in X-ray luminosity, optimally sampling the cluster luminosity function. Temperatures range from 2 to 9 keV, and there is no bias toward any particular morphological typ…
Broad line emission from iron K- and L-shell transitions in the active galaxy 1H0707-495
Larsson, J.; Young, A. J.; Brandt, W. N. +14 more
Since the 1995 discovery of the broad iron K-line emission from the Seyfert galaxy MCG-6-30-15 (ref. 1), broad iron K lines have been found in emission from several other Seyfert galaxies, from accreting stellar-mass black holes and even from accreting neutron stars. The iron K line is prominent in the reflection spectrum created by the hard-X-ray…
The XMM-Newton serendipitous survey. V. The Second XMM-Newton serendipitous source catalogue
Pietsch, W.; Motch, C.; Brusa, M. +47 more
Aims: Pointed observations with XMM-Newton provide the basis for creating catalogues of X-ray sources detected serendipitously in each field. This paper describes the creation and characteristics of the 2XMM catalogue.
Methods: The 2XMM catalogue has been compiled from a new processing of the XMM-Newton EPIC camera data. The main features of t…
An intermediate-mass black hole of over 500 solar masses in the galaxy ESO243-49
Godet, Olivier; Webb, Natalie A.; Barret, Didier +2 more
Ultraluminous X-ray sources are extragalactic objects located outside the nucleus of the host galaxy with bolometric luminosities exceeding 1039ergs-1. These extreme luminosities-if the emission is isotropic and below the theoretical (Eddington) limit, where the radiation pressure is balanced by the gravitational pressure-imp…
The ultraluminous state
Done, Chris; Roberts, Timothy P.; Gladstone, Jeanette C.
We revisit the question of the nature of ultraluminous X-ray sources (ULXs) through a detailed investigation of their spectral shape, using the highest quality X-ray data available in the XMM-Newton public archives (>~10000 counts in their EPIC spectrum). We confirm that simple spectral models commonly used for the analysis and interpretation o…
A Catalog of Broad Absorption Line Quasars in Sloan Digital Sky Survey Data Release 5
Brandt, W. N.; Shen, Yue; Hall, Patrick B. +9 more
We present a catalog of 5039 broad absorption line (BAL) quasars (QSOs) in the Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5) QSO catalog that have absorption troughs covering a continuous velocity range >=2000 km s-1. We have fitted ultraviolet (UV) continua and line emission in each case, enabling us to report common diagnost…
Supernova Feedback Efficiency and Mass Loading in the Starburst and Galactic Superwind Exemplar M82
Heckman, Timothy M.; Strickland, David K.
We measure the net energy efficiency of supernova (SN) and stellar wind feedback in the starburst galaxy M82 and the degree of mass loading of the hot gas piston driving its superwind by comparing a large suite of one and two-dimensional hydrodynamical models to a set of observational constraints derived from hard X-ray observations of the starbur…
Photometric Redshift and Classification for the XMM-COSMOS Sources
Aussel, H.; Le Floc'h, E.; Sanders, D. B. +40 more
We present photometric redshifts and spectral energy distribution (SED) classifications for a sample of 1542 optically identified sources detected with XMM in the COSMOS field. Our template fitting classifies 46 sources as stars and 464 as nonactive galaxies, while the remaining 1032 require templates with an active galactic nucleus (AGN) contribu…
Simultaneous X-ray/optical/UV snapshots of active galactic nuclei from XMM-Newton: spectral energy distributions for the reverberation mapped sample
Fabian, A. C.; Vasudevan, R. V.
We employ contemporaneous optical, ultraviolet (UV) and X-ray observations from the XMM-Newton European Photon Imaging Camera (EPIC-pn) and Optical Monitor (OM) archives to present, for the first time, simultaneous spectral energy distributions (SEDs) for the majority of the Peterson et al. reverberation mapped sample of active galactic nuclei (AG…
Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray Active Galactic Nuclei
Maraschi, L.; Caraveo, P. A.; Tagliaferri, G. +147 more
We report the discovery with Fermi/LAT of γ-ray emission from three radio-loud narrow-line Seyfert 1 galaxies: PKS 1502+036 (z = 0.409), 1H 0323+342 (z = 0.061), and PKS 2004 - 447 (z = 0.24). In addition to PMN J0948+0022 (z = 0.585), the first source of this type to be detected in γ rays, they may form an emerging new class of γ-ray active galac…