NASA NTRS · 19800006724
A-3 scientific results - extragalactic
Abstract
The 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.
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Schwartz, D. A.. 1979-11-01. A-3 scientific results - extragalactic. https://ntrs.nasa.gov/citations/19800006724
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