A complete X-ray sample of the high latitude sky from HEAO-1 A-2 : log N lo S and luminosity functions
- Piccinotti, G.
- Aug 1, 1981.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Shafer, R. A., Marshall, F. E., Holt, S. S., Boldt, E. A., Serlemitsos, P. J., and Mushotzky, R. F.
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
- An experiment was performed in which a complete X-ray survey of the 8.2 steradians of the sky at galactic latitudes where the absolute value of b is 20 deg down to a limiting sensitivity of 3.1 x ten to the minus 11th power ergs/sq cm sec in the 2-10 keV band. Of the 85 detected sources 17 were identified with galactic objects, 61 were identified with extragalactic objects, and 7 remain unidentified. The log N - log S relation for the non-galactic objects is well fit by the Euclidean relationship. The X-ray spectra of these objects were used to construct log N - log S in physical units. The complete sample of identified sources was used to construct X-ray luminosity functions, using the absolute maximum likelihood method, for clusters galaxies and active galactic nuclei.
- Other Subject(s):
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19820010913.
Accession ID: 82N18787.
- No Copyright.
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