... Optical-optical and optical-radio time delays in Q0957+561 A&B, size of the radio source and microlensing", Proceeding of 31st Liege International Astophys. ...
... the Rossi X-ray Timing Explorer, coordinated with Ryle Radio Telescope observations ... The monitoring Ryle Radio Telescope (RT; 15 GHz) data during the 19972006 period ...
... main argument, in particular without using optical counterpart data to measure mass ... the broad energy band of BeppoSAX telescopes allows us to determine the parameters ...
... Although an optical counterpart has not yet been identified (e.g., Naylor et al. ... 310) and (1050) keV energy ranges, respectively. 1 2 telescopes allows us to determine the parameters of BB components at low ...