a radio telescope? • X-ray binaries will be amongst the brightest transient sources observed by LOFAR in the galactic plane. • The more detailed the current understanding, the more LOFAR can add to the picture. • With the demise of RXTE, LOFAR will be one of the triggering telescopes for multi-wavelength observing campaigns for future outbursts. – Therefore we need to know how the radio ties into the X-ray observations.
as much RXTE data on galactic black-hole X-ray binaries as is publicly available in the archives. • This study uses one data reduction scheme and few simple X- ray spectral models to extract information on the state of the objects. • Simple spectral models can only give limited information, however they can be fitted to ALL spectra, regardless of count rate.
all observations. – Gaussian line component also fitted. • Test using χ2 which is the best fitting model. • Fitted ~3800 observations of 25 black-hole binaries. • 15 Ms of observations over the last decade or so.
mask the core emission. • Will be able to monitor the jets over time during the decay of the soft state using international baselines (θ<1as). • Monitor the jet-ISM interaction over months-years after the outburst finishes.
studying X-ray binaries (as well as other sources). • The Disc Fraction Luminosity Diagram is a more physical way of investigating the outbursts of XRBs. • LOFAR will be able to monitor the rise out of quiescence of the binary in the early stages of an outburst. • After the outburst LOFAR will be able to track the ejecta as it travels out into the ISM. – Trace the historical jet emission over time.