Abstract
We report on sensitive high-resolution surveys of the central part of the Andromeda galaxy (M31) with Chandra at X-ray wavelengths and with the Very Large Array at radio wavelengths -- 4.9 and 8.4 GHz. The combination of the data has revealed a number of coincident sources of which two new extended X-ray/radio supernova remnants. Also, the presumed super-massive central black hole M31* shows short- and long-term variability at both radio and X-ray wavelengths.