395 citations · 3.9k across the 73 of their papers we have counts for
24 papers · 1 filter
The Subaru/XMM-Newton Deep Survey (SXDS): III. X-Ray Data
Yoshihiro Ueda, Michael G. Watson, Ian M. Stewart +10
We present the X-ray source catalog in the Subaru/XMM-Newton deep survey. A continuous area of 1.14 deg^2 centered at R.A. = 02h18m and Dec. = -05d is mapped by seven pointings wit…
The cosmological properties of AGN in the XMM-Newton Hard Bright Survey
R. Della Ceca, A. Caccianiga, P. Severgnini +7
(ABRIDGED) We investigate here the XLF of absorbed (Nh between 4E21 and E24 cm-2) and unabsorbed (Nh < 4E21 cm-2) AGN, the fraction of absorbed AGN as a function of Lx (and z), the…
X-ray absorption in distant type II QSOs
M. Krumpe, G. Lamer, A. Corral +7
We present the results of the X-ray spectral analysis of an XMM-Newton-selected type II QSO sample with z>0.5 and 0.5-10 keV flux of 0.3-33 x 10^{-14} erg/s/cm^2. The distribution…
NGC3147: a "true" Seyfert 2 without the broad-line region
S. Bianchi, A. Corral, F. Panessa +5
We report on simultaneous optical and X-ray observations of the Seyfert galaxy, NGC3147. The XMM-Newton spectrum shows that the source is unabsorbed in the X-rays ($N_H<5\times10^{…
XMM-Newton observations of the Lockman Hole V: time variability of the brightest AGN
S. Mateos, X. Barcons, F. J. Carrera +4
This paper presents the results of a study of X-ray spectral and flux variability on time scales from months to years, of the 123 brightest objects (including 46 type-1 AGN and 28…
The XMM-SSC survey of hard-spectrum XMM-Newton sources 1: optically bright sources
M. J. Page, I. Lehmann, Th. Boller +15
We present optical and X-ray data for a sample of serendipitous XMM-Newton sources that are selected to have 0.5-2 keV vs 2-4.5 keV X-ray hardness ratios which are harder than the…
XMM-Newton observations of the Lockman Hole IV: spectra of the brightest AGN
S. Mateos, X. Barcons, F. J. Carrera +5
This paper presents the results of a detailed X-ray spectral analysis of a sample of 123 X-ray sources (46 being type-1 AGN and 28 type-2 AGN) detected with XMM-Newton in the Lockm…
XMM-Newton spectra of hard spectrum Rosat AGN: X-ray absorption and optical reddening
F. J. Carrera, M. J. Page, J. P. D. Mittaz
We present the XMM-Newton spectra of three low-redshift intermediate Seyferts (one Sy1.5, and two Sy1.8), from our survey of hard spectrum Rosat sources. The three AGN are well fit…
A filamentary structure of massive star-forming galaxies associated with an X-ray absorbed QSO at z=1.8
J. A. Stevens, M. J. Page, R. J. Ivison +2
The genesis of spheroids is central to our understanding of galaxy formation -- they are relatively simple systems, containing about half the stellar mass of the Universe. A major…
XMM-Newton observations expose AGN in apparently normal galaxies
P. Severgnini, A. Caccianiga, V. Braito +12
We have performed a detailed analysis of 3 optically normal galaxies extracted from the XMM Bright Serendipitous Source Sample. Thanks to the good statistics of the XMM-Newton data…
The warm absorber of the Seyfert 1 galaxy H1419+480
X. Barcons, F. J. Carrera, M. T. Ceballos
The bright Seyfert 1 galaxy H1419+480 (z~0.072), whose X-ray colours from earlier HEAO-1 and ROSAT missions suggested a complex X-ray spectrum, has been observed with XMM-Newton. T…
On the origin of the X-ray emission from a narrow-line radioquasar at z>1
X. Barcons, R. Carballo, F. J. Carrera +5
We present new XMM-Newton X-ray observations of the z=1.246 narrow-line radioquasar RX J1011.2+5545 serendipitously discovered by ROSAT. The flat X-ray spectrum previously measured…
H1320+551: A Seyfert 1.8/1.9 galaxy with an unabsorbed X-ray spectrum
X. Barcons, F. J. Carrera, M. T. Ceballos
We present new optical spectroscopic and XMM-Newton X-ray observations of the Active Galactic Nucleus H1320+551. The optical data (consistent with but of better quality than a prev…
The XMM-Newton Bright Serendipitous Source Sample (XMM-Newton BSS)
R. Della Ceca, T. Maccacaro, A. Caccianiga +15
The XMM-Newton Survey Science Center is constructing a large (~1000 sources) and complete sample of bright serendipitous XMM-Newton sources at high galactic latitude, so as to allo…
A survey of hard spectrum ROSAT sources 1: X-ray source catalogue
M. J. Page, J. P. D. Mittaz, F. J. Carrera
We present a catalogue of 147 serendipitous X-ray sources selected to have hard spectra (alpha < 0.5) from a survey of 188 ROSAT fields. Such sources must be the dominant contribut…
ROSAC: Studying the clustering properties of X-ray selected AGNs
F. Tesch, F. J. Carrera, D. Engels +6
We present the first ROSAC results of an AGN clustering analysis. This study comprises a sample of 200 AGNs, 75% of which being at low redshifts z<0.5, in the Ursa Major constellat…
Clustering in the X-ray Universe
X. Barcons, F. J. Carrera, M. T. Ceballos +1
In this paper we discuss various possibilities of using X-ray observations to gain information about the large-scale structure of the Universe. After reviewing briefly the current…
X-ray Spectra of the RIXOS source sample
J. P. D. Mittaz, F. J. Carrera, E. Romero-Colmenero +8
We present results of an extensive study of the X-ray spectral properties of sources detected in the RIXOS survey, that is nearly complete down to a flux limit of 3e-14 cgs (0.5-2…
Soft X-ray spectral variations of the narrow line Seyfert 1 galaxy Markarian 766
M. J. Page, F. J. Carrera, J. P. D. Mittaz +1
The X-ray variability of the narrow line Seyfert 1 galaxy Markarian 766 is studied using 9 ROSAT PSPC datasets. The spectrum is well described by a power law combined with a blackb…
Optical and X-ray properties of the RIXOS AGN: II - Emission lines
E. M. Puchnarewicz, K. O. Mason, F. J. Carrera +9
We present the optical and UV emission line properties of 160 X-ray selected AGN taken from the RIXOS survey (including Halpha, Hbeta, [OIII]5007, MgII2798 and CIII]1909). This sam…
The Origin of the Cosmic Soft X-Ray Background: Optical Identification of an Extremely Deep ROSAT Survey
I. M. McHardy, L. R. Jones, M. R. Merrifield +15
We present the results of the deepest optically identified X-ray survey yet made. The X-ray survey was made with the ROSAT PSPC and reaches a flux limit of 1.6x10^-15 erg cm^-2 s^-…
Soft X-ray background fluctuations and large-scale structure in the Universe
F. J. Carrera, A. C. Fabian, X. Barcons
We have studied the fluctuations of the soft (0.9-2 keV) X-ray background intensity for ~10 arcmin and ~2 arcmin beam sizes, using 80 high galactic latitude medium-deep images from…
Optical and X-ray properties of the RIXOS AGN: I - The continua
E. M. Puchnarewicz, K. O. Mason, E. Romero-Colmenero +6
We present measurements of the optical and X-ray continua of 108 AGN (Seyfert 1s and quasars) from the Rosat International X-ray/Optical Survey (RIXOS). The sample covers a wide ra…
The Deficit of Distant Galaxy Clusters in the RIXOS X-ray Survey
F. J. Castander, R. G. Bower, R. S. Ellis +8
Clusters of galaxies are the largest gravitationally bound systems and therefore provide an important way of studying the formation and evolution of the large scale structure of th…