Cover story:

　　Thanks to a synergic observation conducted using instruments working in X-ray, radio and optical wavebands, an international team of scientists now reveal a fantastic scenario in the accretion process of a black hole binary. For detail, read the story on page 147. (Image credit: YOU Bei)

• General Editorial Office
• Tel/Fax: 86-10-62542631
• Email: bulletin@mail.casipm.ac.cn
• P.O.Box.8712,Beijing 100190,China