Extragalactic Radio Sources: Rapid Variability at 90 GHz.
AEROSPACE CORP EL SEGUNDO CA ELECTRONICS RESEARCH LAB
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Thirty-three extragalactic variable radio sources have been observed at 90 GHz 3.3 mm over two several-day-long periods in a search for daily and hourly variations. OV-236 1921-29 showed a decrease in flux density by a factor of 2.7 over a three-day interval, recovering its previous flux density two days later. OV-236 began a dramatic outburst a few months later. The other sources exhibited no significant variations approximately 20. A summary of previous radio observations of rapid variability is contained in the appendix. Author