Global radio versus bolometric X-ray flux correlation in the black hole X-ray binary GX 339-4

Compact radio jets are ubiquitous in stellar mass black hole binaries in their spectrally hard state. The correlation between the radio emission from the compact jets and X-ray emission from the accretion disk around the black hole, is of major importance in understanding the nature of accretion disk- jet coupling in black hole X-ray binaries. Previous works investigating the radio versus X-ray emission correlation properties, used the narrow 3-9 keV or 1-10 keV X-ray energy band luminosity as proxy for accretion rate. However, the bulk of X-ray emission in the hard spectral state of black hole X-ray binaries, is emitted around 100 keV. We investigated the global radio versus bolometric X-ray luminosity correlation for the black hole X-ray binary GX 339-4 using RXTE observations. We have found that these correlations show an effect of hysteresis, previously found in the relationship between the X-ray hardness and flux, but not in the radio band. These correlations will provide new insights into the various accretion disk and jet ejection models.