Name: De-Chang Dai
 Institution: Physics Department
 Title: Bulk flow and supernova
 Key Words: Bulk flow, supernova
 Abstract: Recently several estimates of the large scale bulk flow shows the magnitude of bulk flow is inconsistent at about 3 sigma with Lambda-CDM predictions. Since the large scale bulk flow is a global motion of matter, the FLRW metric cannot be a suitable metric in CMB frame. In the talk we studied the peculiar velocities of supernova and checked whether the local preference frame is different from CMB frame.