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XMM-Newton observation of the Lockman Hole; I. The X-ray Data | | G. Hasinger
; B. Altieri
; M. Arnaud
; X. Barcons
; J. Bergeron
; H. Brunner
; M. Dadina
; K. Dennerl
; P. Ferrando
; A. Finoguenov
; R. E. Griffiths
; Y. Hashimoto
; F. A. Jansen
; D. H. Lumb
; K. O. Mason
; S. Mateos
; R. G. McMahon
; T. Miyaji
; F. Paerels
; M. J. Page
; A. F. Ptak
; T. P. Sasseen
; N. Schartel
; G. P. Szokoly
; J. Truemper
; M. Turner
; R. S. Warwick
; M. G. Watson
; | | Date: |
14 Nov 2000 | | Subject: | astro-ph | | Abstract: | We report on the first deep X-ray survey with the XMM-Newton observatory during the performance verification phase. The field of the Lockman Hole, one of the best studied sky areas over a very wide range of wavelengths, has been observed. A total of ~100 ksec good exposure time has been accumulated. Combining the images of the European Photon Imaging Camera (EPIC) detectors we reach a flux limit of 0.31, 1.4 and 2.4 X 10^{-15} erg cm^{-2} s^{-1}, respectively in the 0.5-2, 2-10, and 5-10 keV band. Within an off-axis angle of 10 arcmin we detect 148, 112 and 61 sources, respectively. The log(N)-log(S) relation in the three bands is compared with previous results. In particular in the 5-10 keV band these observations present the deepest X-ray survey ever, about a factor 20 more sensitive than the previous BeppoSAX observations. Using X-ray spectral diagnostics and the set of previously known, spectroscopically identified ROSAT sources in the field, the new sources can be classified. XMM-Newton detects a significant number (~40%) of X-ray sources with hard, probably intrinsically absorbed X-ray spectra, confirming a prediction of the population synthesis models for the X-ray background. | | Source: | arXiv, astro-ph/0011271 | | Services: | Forum | Review | PDF | Favorites | |
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