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Radio / X-ray correlation in the low/hard state of GX 339--4
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We present the results of a long-term study of the black hole candidate GX 339-4 using simultaneous radio (from the Australia Telescope Compact Array) and X-ray (from the Rossi X-ray Timing Explorer and BeppoSAX) observations performed between 1997 and 2000. We find strong evidence for a correlation between these two emission regimes that extends over more than three decades in X-ray flux, down to the quiescence level of GX 339-4. This is the strongest evidence to date for such strong coupling between radio and X-ray emission. We discuss these results in light of a jet model that can explain the radio/X-ray correlation. This could indicate that a significant fraction of the X-ray flux that is observed in the low-hard state of black hole candidates may be due to optically thin synchrotron emission from the compact jet.
Forward citations
Cited by 2 Pith papers
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Revisiting the infrared/X-ray correlation of GX 339-4 based on a jet model
The observed IR/X-ray correlation of GX 339-4, including its break, can be reproduced by varying only the accretion rate in a jet model if the X-rays come from synchrotron self-Compton scattering in the jet.
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Radio-X-ray Time Lags in GX 339-4: Probing Magnetic Field Transport in Black Hole Accretion
Time lag analysis using ICCF on GX 339-4 data reveals state-dependent radio-X-ray delays interpreted as evidence for magnetic field transport linking the inner accretion flow and jet.
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