活动星系核与类星体中致密天体的形成与并合:伽玛爆发与引力辐射(英文)

METAL RICH QUASAR AND ACTIVE GALACTIC NUCLEI HOST γ RAY BURSTS

频繁的超新星爆发可用以解释活动星系核与类星体的超高金属丰度。星团中的恒星与吸积盘相互作用导致致密天体中子星和黑洞的形成率很高，这些致密天体与红巨星很容易形成双星系统，而后形成（ＮＳ／ＢＨ，ＮＳ／ＢＨ） 双星由于引力辐射最终导致并合而形成伽玛射线爆发。我们估计了伽玛射线爆的爆发频率，发现与观测相符。

The production rate of compact objects, i.e. neutron stars (NS) and black holes (BH), in active galactic nuclei (AGN) and quasars (QSO), where the frequent supernova explosion is used to explain the high metallicity, is very high due to the interaction between the accretion disk and main sequence stars in the nucleus of the quasar. The compact object red giant star (RG) binaries can be easily formed due to the largecaptured cross section of the red giant stars. The (NS/BH, NS/BH) binary can be formed after the supernovaexplosion of the (NS/BH, RG) binary. Intense transient gamma ray emission(gamma ray burst) and gravitational radiation can result from the merger of these two compact objects. Collision between helium core (Hc) of RG and black hole may also take place and may also result in long duration gamma ray bursts but no gravitational waves. We estimate that the merger rate of (NS/BH, NS/BH) binaries and (Hc, BH) is proportional to the metal abundance NVCIV and can be as high as 10 -3 NVCIV/0.01 per year per AGN/QSO.