your ID: 0171 
First Name: Jun 
Last Name: Tao 
Affiliation: Shanghai Astronomical Observatory 
Title: Searching for candidates of binary black hole system 
Authors: Jun Tao 
Topic: 1 
Session: oral 
Abstract: The most direct evidence for a supermassive binary black hole(BBH) can be 
obtained by detection of the Kepler orbital motion of some emission 
component close to BHs(Sudou et al. 2003). We propose to observe some BBH candidates, 
which have evidence both in optical and radio observation, through 
phase-referencing VLBI observations, to search for direct evidence 
to confirm the BBHs.