OJ 287的引力波辐射研究

发布时间：2018-11-18 20:34

【摘要】：类星体OJ 287的研究已经有100多年的历史,它呈现周期性双峰爆发现象,爆发周期为12 yr,比较好地解释观测的模型是双黑洞模型,即次黑洞绕主黑洞运动,并撞击主黑洞吸积盘从而引起爆发.此模型合理地解释了OJ 287的光变曲线并正确预言了未来爆发时间,这间接证明了广义相对论进动效应以及引力波的存在.星系中心大质量黑洞是一类重要的引力波源,而精确确定了其内部组分运动学方程的星系非常少,由于双黑洞模型提供了精确的黑洞运动轨道,故可以在这个运动轨道基础上研究其引力波辐射.在已有工作基础上,采用后牛顿近似方法首次得到了引力波辐射功率和波形随时间的演化关系,根据目前引力波探测设备IPTA(International Pulsar Timing Array)的进展情况,未来十几年内对OJ 287的引力波直接探测将成为可能.
[Abstract]:The quasar OJ 287 has been studied for more than 100 years. It presents the phenomenon of periodic bimodal bursts. The observed model with a period of 12 yr, is a double black hole model, that is, the secondary black hole moves around the main black hole. And hit the main black hole accretion disk, causing an explosion. The model reasonably explains OJ 287's light variation curve and correctly predicts the future burst time, which indirectly proves the existence of the general relativistic precession effect and the gravitational wave. A large mass black hole in the center of a galaxy is an important source of gravitational waves, but very few galaxies determine the kinematics equation of its internal components accurately, because the double black hole model provides accurate black hole motion orbit. Therefore, the gravitational wave radiation can be studied on the basis of this moving orbit. Based on the previous work, the relationship between the radiation power of gravitational waves and the evolution of waveforms with time is obtained for the first time by using the post-Newton approximation method. According to the development of gravitational wave detection equipment IPTA (International Pulsar Timing Array) at present, Direct gravitational wave detection of OJ 287 will be possible in the next decade.
【作者单位】：中国科学院国家天文台/云南天文台;中国科学院研究生院;
【基金】：国家自然科学基金项目(107732028)资助
【分类号】：P158

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