Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apjs...39..573m&link_type=abstract
Astrophysical Journal Supplement Series, vol. 39, Apr. 1979, p. 573-632.
Astronomy and Astrophysics
Astronomy
75
Astronomical Catalogs, Oso-7, Satellite Observation, X Ray Astronomy, Graphs (Charts), Light Curve, Long Term Effects, Spaceborne Astronomy, Spectral Bands, Tables (Data)
Scientific paper
This paper is a summary of the observations of the cosmic X-ray sky performed by the MIT 1-40-keV X-ray detectors on OSO 7 between October 1971 and May 1973. Specifically, mean intensities or upper limits of all third Uhuru or OSO 7 cataloged sources (185 sources) in the 3-10-keV range are computed. For those sources for which a statistically significant (greater than 20) intensity was found in the 3-10-keV band (138 sources), further intensity determinations were made in the 1-15-keV, 1-6-keV, and 15-40-keV energy bands. Graphs and other simple techniques are provided to aid the user in converting the observed counting rates to convenient units and in determining spectral parameters. Long-term light curves (counting rates in one or more energy bands as a function of time) are plotted for 86 of the brighter sources.
Bradt Hale V.
Clark George W.
Hearn David R.
Laird F. N.
Lewin Walter H. G.
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