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Initial results from a ROSAT deep survey in LynxPreliminary results from a deep (70 ksec) Rosat survey of the high galactic latitude selected area Lynx.3A are presented. Lynx.3A sensitivity was previously studied in both the optical radio, with deep Westerbork surveys and deep multicolor Charge Couple Device (CCD) images form the Palomar 200 inch Four-Shooter. About 70 x-ray sources were detected within the central 40 foot diameter region of the Position Sensitive Proportional Counter (PSPC), observed surface densities of approximately 200 x-ray sources/sq deg are suggested, and these x-ray sources alone account for approximately 30 percent of the cosmic x-ray background (0.9 to 2.2 keV). An initial look at the observed x-ray logN - logS curve is presented, but a detailed assessment requires further study. The 4 sigma limit of about 7 times 10 to the minus 15th power erg/s.sq cm (0.5 to 2.0 keV) is considerably deeper then the Einstein deep surveys, and of comparable sensitivity to the deepest current Rosat surveys. Cross correlation with our Four Shooter optical catalogs yields at least one likely optical candidate for nearly all of the Rosat x-ray sources; a number of the likely optical identifications have colors of quasi-stellar objects (and stellar PSF), but in other cases galaxies/groups are also viable candidates.
Document ID
19930007943
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Anderson, S. F.
(Washington Univ. Seattle, WA, United States)
Windhorst, R. A.
(Arizona State Univ. Tempe., United States)
Maccacaro, T.
(Osservatorio Astronomico Brera, Milan, Italy)
Burstein, D.
(Arizona State Univ. Tempe., United States)
Franklin, B. E.
(Arizona State Univ. Tempe., United States)
Griffiths, R. E.
(Space Telescope Science Inst. Baltimore, MD., United States)
Koo, D. C.
(Lick Observatory Santa Cruz, CA., United States)
Mathis, D. F.
(Arizona State Univ. Tempe., United States)
Morgan, W. A.
(Pennsylvania State Univ. University Park., United States)
Neuschaefer, L. W.
(Arizona State Univ. Tempe., United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1992
Publication Information
Publication: MPI fuer Extraterristrische Physik, X Ray Emission from Active Galactic Nuclei and the Cosmic X Ray Background
Subject Category
Astronomy
Accession Number
93N17132
Funding Number(s)
CONTRACT_GRANT: NAG5-1630
CONTRACT_GRANT: NSF AST-88-21016
CONTRACT_GRANT: NAG5-1623
CONTRACT_GRANT: NAG1-455
Distribution Limits
Public
Copyright
Other
Document Inquiry

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