National Astronomical Observatories;
Chinese Academy of Sciences;
Beijing 100101;
China;
University of Chinese Academy of Sciences;
Bejjing 100049.China;
CAS Key Laboratory of FAST;
National Astronomical Observatories;
Chinese Academy of Sciences;
Beijing 100101;
China;
Institute of High Energy Physics;
Chinese Academy of Sciences;
Beijing 100049;
China;
black hole physics; gravitational waves; pulsars:general; pulsars:individual(PSR J1909-3744);