3.6/12 cm radio observation of Jupiter during the impact by Comet SL-9

We present 3.6/12cm dual-frequency radio continuum observations of Jupiter with the Shanghai Observatory 25 m radio telescope during the impact by comet SL-9. There was no appreciable variation in the daily average flux density at 3.6 cm wavelength, but a relative increase of about 20% at 12 cm was observed during the impact.