Radio Emission from GRO J1655–40 during the 1994 Jet Ejection Episodes

摘要: We report multifrequency radio observations of GRO J1655-40 obtained with the Australia Telescope Compact Array, Molonglo Observatory Synthesis and Hartebeesthoek Radio Astronomy at time major hard X-ray outbursts in 1994 August-September. The emission reached levels order a few Jy was found to be linearly polarized by up 10%, indicating synchrotron origin. light curves are good agreement those measured VLA, but our closer sampling has revealed two new short-lived events significant deviations from simple exponential decay. polarization data show that magnetic field is well ordered aligned right angles jets for most monitoring period. evolution cannot explained solely terms bubble model, we invoke hybrid "core-lobe" model core which contributes both free-free "lobes," classical emitters.