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Multiwavelength observations of the hard X-ray selected sources by Chandra and XMM-Newton surveys have significantly improved our knowledge of the objects responsible of the hard X-ray background. A surprising finding is the discovery of a…

We present the first results of our X-ray monitoring campaign on a 1.7 square degree region centered on Sgr A* using the satellites XMM-Newton and Chandra. The purpose of this campaign is to monitor the behavior (below 10 keV) of X-ray…

(Abridged) This paper presents the data recently released for the XMM-Newton/WFI survey carried out as part of the ESO Imaging Survey (EIS) project. The aim of this survey is to provide optical imaging follow-up data in BVRI for…

In this paper we cross-correlate the FIRST 1.4GHz radio survey with a wide field (~ 1.6deg^2) shallow [f(0.5-8keV) ~ 1e-14erg/s/cm^2] XMM-Newton survey. We find 12 X-ray/radio matches representing 4% of the X-ray selected sample. Most of…

Astrophysics · Physics 2009-11-10 A. Georgakakis , I. Georgantopoulos , I. Leonidaki , Akylas , G. C. Stewart , C. Goudis

We present the results of our identification of 14 X-ray sources detected in the eastern Galactic sky ($0<l<180 \circ$ ) in the 4-12 keV energy band on the combined map of the first five all-sky surveys (from December 2019 to March 2022)…

We present the first study of the X-ray population of the intermediate-age rich open cluster NGC 6819 using the XMM-Newton Observatory. In the past decade, Chandra X-ray observations have shown a relationship between the X-ray population of…

NGC 253 is a local, star-bursting spiral galaxy with strong X-ray emission from hot gas, as well as many point sources. We have conducted a spectral survey of the X-ray population of NGC 253 using a deep XMM-Newton observation.NGC 253 only…

Astrophysics · Physics 2009-11-13 R. Barnard , L. Shaw Greening , U. Kolb

The study of astronomical transients at high energies provides insights into some of the most extreme physical events in the universe; however, carrying out their detection and fast follow-up studies are limited by instrumental constraints.…

High Energy Astrophysical Phenomena · Physics 2026-01-28 Robbie Webbe , E. Quintin , N. A. Webb , Gabriele Ponti , Tong Bao , Chandreyee Maitra , Shifra Mandel , Samaresh Mondal

Context: We use the first XMM serendipitous source catalogue (1XMM) to compile a sample of normal X-ray galaxies Aims: We seek to expand the database of X-ray selected normal galaxies at intermediate redshifts and examine the relation…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 E. Rovilos , I. Georgantopoulos , P. Tzanavaris , M. Pracy , M. Whiting , D. Woods , C. Goudis

We present a sample of eight extended X-ray sources detected in the wide-field (~2.3 deg^2), bright (2-10 ksec) XMM-Newton/2dF survey, reaching a flux limit of ~2 X 10^{-14} erg/s/cm^2. Of these, seven are identified as secure X-ray…

Astrophysics · Physics 2010-03-19 T. Gaga , M. Plionis , S. Basilakos , I. Georgantopoulos , A. Georgakakis

We present deep Swift follow-up observations of a sample of 94 unidentified X-ray sources from the XMM-Newton Slew Survey. The X-ray Telescope on-board Swift detected 29% of the sample sources; the flux limits for undetected sources…

High Energy Astrophysical Phenomena · Physics 2015-05-20 R. L. C. Starling , P. A. Evans , A. M. Read , R. D. Saxton , P. Esquej , H. Krimm , P. T. O'Brien , J. P. Osborne , S. Mateos , R. Warwick , K. Wiersema

(abridged) The XMM-Newton survey in the Chandra Deep Field South (XMM-CDFS) aims at detecting and studying the spectral properties of a significant number of obscured and Compton-thick AGN. The large effective area of XMMin the 2--10 and…

Galactic X-ray sources are diverse, ranging from active M dwarfs to compact object binaries, and everything in between. The X-ray landscape of today is rich, with point source catalogs such as those from XMM-Newton, Chandra, and Swift, each…

High Energy Astrophysical Phenomena · Physics 2024-01-19 Antonio C. Rodriguez

(Abridged) We present the results of M31 globular cluster (GC) X-ray source survey, based on the data of XMM-Newton and Chandra observations covering ~6100 sq.arcmin of M31. We detected 43 X-ray sources coincident with globular cluster…

Astrophysics · Physics 2008-11-26 Sergey Trudolyubov , William Priedhorsky

Procedures based on current methods to detect sources in X-ray images are applied to simulated XMM images. All significant instrumental effects are taken into account, and two kinds of sources are considered -- unresolved sources…

Astrophysics · Physics 2009-11-06 I. Valtchanov , M. Pierre , R. Gastaud

We study population of compact X-ray sources in the Large Magellanic Cloud using the archival data of XMM-Newton observatory. The total area of the survey is approximately 3.8 square degrees with the limiting sensitivity of about 10^{-14}…

Astrophysics · Physics 2009-11-10 P. Shtykovskiy , M. Gilfanov

The XMM-Newton - Blanco Cosmology Survey project (XMM-BCS) is a coordinated X-ray, optical and mid-infrared cluster survey in a field also covered by Sunyaev-Zel'dovich effect surveys by the South Pole Telescope and the Atacama Cosmology…

The question of the X-ray background has been largely settled over the last 10 years using the ROSAT satellite. About 70-80 % of the soft X-ray background was resolved into discrete sources, which are mainly X-ray and optically unobscured…

Astrophysics · Physics 2007-05-23 I. Lehmann , G. Hasinger , S. S. Murray , M. Schmidt

In this paper we combine archival and proprietary XMM-Newton observations (about 5deg^2) that overlap with the Sloan Digital Sky Survey to explore the nature of the moderate-z X-ray population. We focus on X-ray sources with optically red…

Astrophysics · Physics 2009-11-13 A. Georgakakis , I. Georgantopoulos , A. Akylas

In this paper we present the first results from an on-going serendipitous survey aiming to identify X-ray selected `normal' galaxies (i.e. not AGN dominated) by combining archival XMM-Newton data with the Sloan Digital Sky Survey. In the…

Astrophysics · Physics 2009-11-10 A. E. Georgakakis , I. Georgantopoulos , S. Basilakos , M. Plionis
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