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The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source
G. Risaliti, M. Salvati, M. Elvis +10
We present an analysis of the extreme obscuration variability observed during an XMM-Newton 5-days continuous monitoring of the AGN in NGC 1365. The source was in a reflection-domi…
CAIXA: a Catalogue of AGN In the XMM-Newton Archive I. Spectral analysis
Stefano Bianchi, Matteo Guainazzi, Giorgio Matt +2
We present CAIXA, a Catalogue of AGN In the XMM-Newton Archive. It consists of all the radio-quiet X-ray unobscured ( cm) Active Galactic Nuclei…
X-ray polarimetry on-board HXMT
Paolo Soffitta, Ronaldo Bellazzini, Gianpiero Tagliaferri +15
The development of micropixel gas detectors, capable to image tracks produced in a gas by photoelectrons, makes possible to perform polarimetry of X-ray celestial sources in the fo…
XPOL: a photoelectric polarimeter onboard XEUS
Enrico Costa, Ronaldo Bellazzini, Jean Bregeon +14
The XEUS mission incorporates two satellites: the Mirror Spacecraft with 5 m2 of collecting area at 1 keV and 2 m2 at 7 keV, and an imaging resolution of 5" HEW and the Payload Spa…
Detection of blueshifted emission and absorption and a relativistic Iron line in the X-ray spectrum of ESO 323-G077
E. Jimenez-Bailon, Y. Krongold, S. Bianchi +4
We report on the X-ray observation of the Seyfert 1 ESO323-G077 performed with XMM-Newton. The spectra show a complex spectrum with conspicuous absorption and emission features. Th…
A BLR origin for the iron K line in NGC7213
Stefano Bianchi, Fabio La Franca, Giorgio Matt +5
The X-ray spectrum of NGC7213 is known to present no evidence for Compton reflection, a unique result among bright Seyfert 1s. The observed neutral iron K line, therefore, canno…
X-ray absorption in Compton-thin AGN: the predictions of a model revisited
A. Lamastra, G. C. Perola, G. Matt
The evidence of a decrease with increasing luminosity of the fraction f_{abs} of absorbed and Compton-thin among X-ray (2-10 keV) selected AGN is observationally rather well suppor…
Chandra unveils a binary Active Galactic Nucleus in Mrk463
Stefano Bianchi, Marco Chiaberge, Enrico Piconcelli +2
We analyse Chandra, XMM-Newton and HST data of the double-nucleus Ultraluminous Infrared Galaxy (ULIRG), Mrk463. The Chandra detection of two luminous ($\mathrm{L}_\mathrm{2-10 keV…
XMM-Newton observations of 4 luminous radio-quiet AGN, and the soft X-ray excess problem
F. D'Ammando, S. Bianchi, E. Jimenez-Bailon +1
The nature and origin of the soft X-ray excess in radio quiet AGN is still an open issue. The interpretation in terms of thermal disc emission has been challanged by the discovery…
Heavy absorption and soft X-ray emission lines in the XMM-Newton spectrum of the Type 2 radio-loud quasar 3C 234
E. Piconcelli, S. Bianchi, G. Miniutti +4
We report results on a 40 ks XMM-Newton observation of the Type 2 quasar 3C 234. Optical spectropolarimetric data have demonstrated the presence of a hidden broad-line region in th…
Variation of the primary and reprocessed radiation in the flare-spot model
M. Dovciak, V. Karas, G. Matt +1
We study light curves and spectra (equivalent widths of the iron line and some other spectral characteristics) which arise by reprocessing on the surface of an accretion disc, foll…
Variation in the primary and reprocessed radiation from an orbiting spot around a black hole
M. Dovciak, V. Karas, G. Matt +1
We study light curves and spectra (equivalent widths of the iron line and some other spectral characteristics) which arise by reflection on the surface of an accretion disc, follow…
NGC3147: a "true" Seyfert 2 without the broad-line region
S. Bianchi, A. Corral, F. Panessa +5
We report on simultaneous optical and X-ray observations of the Seyfert galaxy, NGC3147. The XMM-Newton spectrum shows that the source is unabsorbed in the X-rays ($N_H<5\times10^{…
The HELLAS2XMM survey: XI. Unveiling the nature of X-ray Bright Optically Normal Galaxies
F. Civano, M. Mignoli, A. Comastri +8
X-ray Bright Optically Normal Galaxies (XBONGs) constitute a small but not negligible fraction of hard X-ray selected sources in recent Chandra and XMM-Newton surveys. Even though…
An X-ray Polarimeter for HXMT Mission
Enrico Costa, Ronaldo Bellazzini, Gianpiero Tagliaferri +17
The development of micropixel gas detectors, capable to image tracks produced in a gas by photoelectrons, makes possible to perform polarimetry of X-ray celestial sources in the fo…
Unveiling the broad band X-ray continuum and iron line complex in Mkr 841
P. O. Petrucci, G. Ponti, G. Matt +7
Mkr 841 is a bright Seyfert 1 galaxy known to harbor a strong soft excess and a variable K iron line. It has been observed during 3 different periods by XMM for a total cumulate…
Compton thick AGN in the Suzaku era
A. Comastri, R. Gilli, C. Vignali +3
Suzaku observations of two hard X-ray (> 10 keV) selected nearby Seyfert 2 galaxies are presented. Both sources were clearly detected with the PIN Hard X-ray Detector up to several…
On the Iwasawa-Taniguchi effect of radio-quiet AGN
Stefano Bianchi, Matteo Guainazzi, Giorgio Matt +1
The existence of an anti-correlation between the Equivalent Width (EW) of the neutral narrow core of the iron Kalpha emission line and the 2-10 keV luminosity (the so-called `X-ray…
The properties of unobscured AGN observed by XMM-Newton
Stefano Bianchi, Matteo Guainazzi, Giorgio Matt +1
Multiwavelength analysis on large samples of AGN provides an excellent tool to understand the physics of these objects. We present the largest catalog of XMM-Newton targeted AGN, a…
The XMM-Newton wide-field survey in the COSMOS field: I. Survey description
G. Hasinger, N. Cappelluti, H. Brunner +21
We present the first set of XMM-Newton EPIC observations in the 2 square degree COSMOS field. The strength of the COSMOS project is the unprecedented combination of a large solid a…
The HELLAS2XMM survey.VIII. Optical identifications of the extended sample
F. Cocchia, F. Fiore, C. Vignali +14
(Abridged) We present the results of the photometric and spectroscopic identification of 110 hard X-ray selected sources (6e-15<F(2-10 keV)<4e-14 cgs) from 5 additional XMM-Newton…
The origin of the strong soft excess and puzzling iron line complex in Mkn 841
P. O. Petrucci, G. Ponti, G. Matt +8
Mkn 841 has been observed during 3 different periods (January 2001, January 2005 and July 2005) by XMM-Newton for a total cumulated exposure time of ~108 ks. We present in this pap…
XMM-Newton view of the double-peaked Fe K-alpha complex in E1821+643
E. Jimenez-Bailon, M. Santos-Lleó, E. Piconcelli +3
We present the results of the analysis of the hard band XMM-Newton spectra of the luminous, L(2-10keV)~3.4E+45 erg/s, radio-quiet quasar, E1821+643. Two emission features were obse…
General Relativity effects and line emission
Giorgio Matt
General Relativity effects (gravitational redshift, light bending, ...) strongly modify the characteristics of the lines emitted close to the Black Hole in Active Galactic Nuclei a…