Discovery of Correlated Behavior Between the HXR and the Radio Bands in Cygnus X-3

Abstract

Using CGRO/BATSE hard X-ray (HXR) data and GHz radio monitoring data from the Green Bank Interferometer (GBI), we have performed a long term study ($\sim$ 1800 days) of the unusual X-ray binary Cyg X-3 resulting in the discovery of a remarkable relationship between these two wavelength bands. We find that, during quiescent radio states, the radio flux is strongly anticorrelated with the intensity of the HXR emission. The relationship switches to a correlation with the onset of major radio flaring activity. During major radio flaring activity the HXR drops to a very low intensity during quenching in the radio and recovers during the radio flare. Injection of plasma into the radio jets of Cyg X-3 occurs during changes in the HXR emission and suggests that disk-related and jet-related components are responsible for the high energy emission.

19 pages, Latex, 4 figures, 2 tables, submitted to Ap.J

References in corpus (2)

• Broad band high energy observations of the superluminal jet source GRO J1655-40 during an outburst
• Cygnus X-3 in outburst : quenched radio emission, radiation losses and variable local opacity

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