Extended radio emission after the soft X-ray maximum of the NOAA 9077 AR solar flare on July 10, 2000

An extended radio emission after a soft X-ray (SXR) maximum was detected in the active region NOAA 9077 by several observatories for the solar flare a fter 21:42 UT on July 10, 2000. Also some radio fine structures before the enduring radio emission were observed with the 1.0-2.0 GHz spectrometer of Beijing Astronomical Observatory (BAO) in the same time. We apply a shear-d riven quadrupolar reconnection model (SQR) to analyze the fine structures a nd the related radio emission. We find that the footpoint shear motion of t he flux loop is accompanied with the emerging up of the loop during the rec onnection process. Mie tentatively interpret the extended radio emission as the nonthermal radiation caused by a new reconnection process between emer ging flux loop and pre-existing. overarching loop after tile soft X-ray max imum.