Variations in the 5 GHz Flux Density of the Nucleus of M87

Abstract

Two recent articles1,2 have shown that the X-ray flux from M87 is variable over time scales of less than 1 yr. This letter reports detection of variations in the radio flux density of a compact component in the nucleus of M87, over similar time scales. 
DOI: 10.1038/231253a0

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