GX 339-4

GX 339-4

GX 339-4

GX 339-4

GX 339-4

GX 339-4

GX 339-4

GX 339-4 - Black hole or neutron star X-ray binary?

GX 339-4 - X-ray spectra of high and low states

GX 339-4 : Significant decline in IR and Optical

GX 339-4 = 4u 1658-48

GX 339-4 = 4u 1658-48

GX 339-4 = 4u 1658-48

GX 339-4 Approaching Quiescence ?

GX 339-4 back in the hard state: optical observations reveal the return of the jet

GX 339-4 detected with INTEGRAL

GX 339-4 going into optical/IR decline

GX 339-4 in a very low luminosity state

GX 339-4 in transition from the hard state

GX 339-4 in transition towards hard states