Monitoring and Modeling Radio Flares from Microquasars

We present results of long-term daily monitoring of a sampleof Galactic radio-emitting X-ray binaries showing relativistic jets(RJXRB): SS433, Cyg X-3, and GRS 1915+105, withthe RATAN-600 radio telescope in the 0.6–22 GHz range.We carried out the modeling calculations to understand the temporal(1–100 days) and spectral (1–22 GHz) dependence.We tested the finite jet segment models and we found that the geometry ofthe conical hollow jets is responsible for either a power law or anexponential decay of the flares.SS433 was monitored for 100 days in 1997 and 120 days in 1999.From the quiescent radio light curves, we obtained clear evidenceof a 6.04-day 10–15% modulation. Three powerful flares (up to 13 Jy) from Cyg X-3 weredetected in April 2000.