NASA NTRS · 19800006719
X-ray variability observed with HEAO A-1
Abstract
Results from the HEAO A-1 instrument which observed X-ray source variability over a wide range of accessible timescales are surveyed. The objects observed include quasars, BL Lacertae, and active galactic nuclei. A high sensitivity search for X-ray pulsars, known black hole candidates, period fluctuation in binary pulsars, and X-ray and gamma ray bursts are among the topics covered.
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Friedman, H.. 1979-11-01. X-ray variability observed with HEAO A-1. https://ntrs.nasa.gov/citations/19800006719
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