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    HEAO A-2 extragalactic results (1979)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Results from the HEAO A-2 experiment concerning the extragalactic X-ray sky are discussed. All-sky maps of hard X-ray sources detected are presented reflecting the temporal variability of the sources that make up the extragalactic X-ray sky. Most of the identified extragalactic objects are not clusters of galaxies but isolated galaxies. Spectra for sources representing classes of active galz galaxies, BL Lacertae objects, and N galaxies are discussed in order of luminosity.
    Keywords: ASTRONOMY
    Type: NASA. Marshall Space Flight Center HEAO Sci. Symp.; p 82-100
    Format: application/pdf
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