589 citations · 6.1k across the 72 of their papers we have counts for
17 papers · 1 filter
The XXL Survey: I. Scientific motivations - XMM-Newton observing plan - Follow-up observations and simulation programme
M. Pierre, F. Pacaud, C. Adami +89
We present the XXL Survey, the largest XMM programme totaling some 6.9 Ms to date and involving an international consortium of roughly 100 members. The XXL Survey covers two extrag…
Finding Rare AGN: XMM-Newton and Chandra Observations of SDSS Stripe 82
Stephanie M. LaMassa, C. Megan Urry, Nico Cappelluti +15
We have analyzed the {\it XMM-Newton} and {\it Chandra} data overlapping 16.5 deg of Sloan Digital Sky Survey Stripe 82, including 4.6 deg of proprietary {\it X…
The XMM-Newton deep survey in the CDF-S VI. Obscured AGN selected as infrared power-law galaxies
N. Castelló-Mor, F. J. Carrera, A. Alonso-Herrero +7
Accretion onto SMBH is believed to occur mostly in obscured AGN. Such objects are proving rather elusive in surveys of distant galaxies, including those at X-ray energies. Our main…
The XMM deep survey in the CDFS IV. Candidate Compton-thick AGN
I. Georgantopoulos, A. Comastri, C. Vignali +15
The Chandra Deep Field is the region of the sky with the highest concentration of X-ray data available: 4Ms of Chandra and 3Ms of XMM data, allowing excellent quality spectra to be…
The XMM deep survey in the CDF-S II. a 9-20 keV selection of heavily obscured active galaxies at z>1.7
K. Iwasawa, R. Gilli, C. Vignali +10
We present results on a search of heavily obscured active galaxies z>1.7 using the rest-frame 9-20 keV excess for X-ray sources detected in the deep XMM-CDFS survey. Out of 176 sou…
The nature of the unresolved extragalactic soft CXB
N. Cappelluti, P. Ranalli, M. Roncarelli +11
In this paper we investigate the power spectrum of the unresolved 0.5-2 keV CXB with deep Chandra 4 Ms observations in the CDFS. We measured a signal which, on scales >30", is sign…
GOODS-Herschel: Ultra-deep XMM-Newton observations reveal AGN/star-formation connection
E. Rovilos, A. Comastri, R. Gilli +30
Models of galaxy evolution assume some connection between the AGN and star formation activity in galaxies. We use the multi-wavelength information of the CDFS to assess this issue.…
X-ray properties of radio-selected star forming galaxies in the Chandra-COSMOS survey
P. Ranalli, A. Comastri, G. Zamorani +7
X-ray surveys contain sizable numbers of star forming galaxies, beyond the AGN which usually make the majority of detections. Many methods to separate the two populations are used…
On the Lx-L6micron ratio as a diagnostic for Compton-thick AGN
I. Georgantopoulos, E. Rovilos, A. Akylas +6
As the mid-IR luminosity represents a good isotropic proxy of the AGN power, a low X-ray to mid-IR luminosity ratio is often claimed to be a reliable indicator for selecting Compto…
The Chandra Deep Field-South Survey: 4 Ms Source Catalogs
Y. Q. Xue, B. Luo, W. N. Brandt +22
[abridged] We present point-source catalogs for the 4Ms Chandra Deep Field-South (CDF-S), which is the deepest Chandra survey to date and covers an area of 464.5 arcmin^2. We provi…
The large-scale structure in the Chandra Deep Field South
Dario Trevese, Fabrizio Fiore, Enrico Piconcelli +4
We have studied the large scale distribution of matter in the Chandra Deep Field South on the basis of photometric redshifts and we have identifed several over-densities between re…
The XMM Deep survey in the CDFS I. First results on heavily obscured AGN
A. Comastri, P. Ranalli, K. Iwasawa +25
We present the first results of the spectroscopy of distant, obscured AGN as obtained with the ultra-deep (~3.3 Ms) XMM-Newton survey in the Chandra Deep Field South (CDFS). One of…
The evolution of obscured accretion
R. Gilli, A. Comastri, C. Vignali +2
Our current understanding of the evolution of obscured accretion onto supermassive black holes is reviewed. We consider the literature results on the relation between the fraction…
Probing BH mass and accretion through X-ray variability in the CDFS
V. Allevato, C. Pinto, M. Paolillo +4
Recent work on nearby AGNs has shown that X-ray variability is correlated with the mass and accretion rate onto the central SMBH. Here we present the application of the variability…
AGN unified scheme and evolution: a Suzaku view
A. Comastri, K. Iwasawa, R. Gilli +2
We present broad band Suzaku}observations of a small sample of hard X-ray selected (> 10 keV), nearby Seyfert 2 galaxies and discuss the results in the context of AGN unified model…
Evolution of the X-ray Luminosity in Young HII Galaxies
D. Rosa González, E. Terlevich, E. Jiménez Bailón +5
In an effort to understand the correlation between X-ray emission and present star formation rate (SFR), we obtained XMM-Newton data to estimate the X-ray luminosities of a sample…
The Growth of Supermassive Black Holes Across Cosmic Time
K. Nandra, J. A. Aird, D. M. Alexander +54
One of the main themes in extragalactic astronomy for the next decade will be the evolution of galaxies over cosmic time. Many future observatories, including JWST, ALMA, GMT, TMT…