2001A&A...365L..45H

Query : 2001A&A...365L..45H

2001A&A...365L..45H - Astronomy and Astrophysics, volume 365L45-50 (2001/1-1)

XMM-Newton observation of the Lockman Hole. I. The X-ray data.

HASINGER G., ALTIERI B., ARNAUD M., BARCONS X., BERGERON J., BRUNNER H., DADINA M., DENNERL K., FERRANDO P., FINOGUENOV A., GRIFFITHS R.E., HASHIMOTO Y., JANSEN F.A., LUMB D.H., MASON K.O., MATEOS S., McMAHON R.G., MIYAJI T., PAERELS F., PAGE M.J., PTAK A.F., SASSEEN T.P., SCHARTEL N., SZOKOLY G.P., TRUEMPER J., TURNER M., WARWICK R.S. and WATSON M.G.

Abstract (from CDS):

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 2.4x10^–15erg/cm²/s, respectively in the 0.5-2, 2-10, and 5-10keV 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 5-10keV 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.

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Journal keyword(s): surveys - galaxies: active - galaxies: quasars: general - Cosmology: diffuse radiation - X-ray: galaxies - X-rays: general

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NAME Lockman Hole	reg	10 45 00.0	+58 00 00						~	910	0

Query : 2001A&A...365L..45H

Basic data :

NAME Lockman Hole -- Region defined in the Sky
Other object types:	`reg ([SFD98])`
ICRS coord. (ep=J2000) :	`10 45 00.0 +58 00 00 [ ] E 2011ApJ...734...99H`
FK4 coord. (ep=B1950 eq=1950) :	`10 41 51.0 +58 15 47 [ ]`
Gal coord. (ep=J2000) :	`149.7686 +52.0314 [ ]`

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NAME Lockman Hole NAME the Hole NAME the LJM Hole [SFD98] J1048+5702

References (910 between 1850 and 2026) (Total 910)
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