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A-3 scientific results - extragalacticThe results of the HEAO A-3 experiment are summarized. Specific contributions of the experiment to extragalactic astronomy are emphasized. The discovery of relatively condensed X-ray emission in the cores of those clusters of galaxies which are dominated by a giant elliptical or cD galaxy, the discovery of extended X-ray emitting plasma in groups of galaxies, and the demonstration that BL Lac objects are a class of X-ray sources are among the topics discussed.
Document ID
19800006724
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Schwartz, D. A. (Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Date Acquired
August 10, 2013
Publication Date
November 1, 1979
Publication Information
Publication: NASA. Marshall Space Flight Center HEAO Sci. Symp.
Subject Category
Astronomy
Accession Number
80N14983
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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