OJ287：和谐坐标下的后牛顿计算和脉冲星计时残差检验
发布时间：2018-11-23 11:15
【摘要】：我们在和谐坐标下应用后牛顿近似,计算出了双黑洞系统候选者OJ287所产生的引力辐射。对比脉冲星PSR B1855+09的观测结果,运用计时残差的方法进一步展示了OJ287是双黑洞系统的合理性。在我们所选定的一组初值下,主黑洞和次黑洞的运动轨道都有一定的漂移,这是由于质心在和谐坐标下的运动造成的。同时我们给出了双黑洞系统引力辐射的能流,我们发现能流的正负号随着阶次交替变号：EN0,E1PN0,E2PN0,这与我们之前发现的辐射力的正负号变化一致。 我们比较了和谐坐标下和质心系下的相对轨道,发现它们比较接近。另外,我们还进一步讨论了其他两组初值条件,揭示和谐坐标下的初值条件问题并不平庸。
[Abstract]:Using the post-Newton approximation in the harmonious coordinates, we calculate the gravitational radiation generated by the candidate OJ287 in a double black hole system. Compared with the observational results of pulsar PSR B185509, the method of timing residuals is used to further demonstrate the rationality of OJ287 as a double black hole system. Under the selected initial values, the orbits of the main black hole and the secondary black hole drift to a certain extent, which is caused by the motion of the center of mass in harmonious coordinates. At the same time, we give the energy flow of gravitational radiation in a double black hole system. We find that the positive and negative sign of the energy flow varies with the order of alternating sign: EN0,E1PN0,E2PN0, which is consistent with the change of the positive and negative sign of the radiation force we found before. We compare the relative orbits in harmonious coordinates with those in the centroid system and find that they are close to each other. In addition, we further discuss the other two sets of initial value conditions, which reveal that the initial value conditions in harmonious coordinates are not mediocre.
【学位授予单位】：中国科学技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P145.8;P145.6
本文编号：2351391
[Abstract]:Using the post-Newton approximation in the harmonious coordinates, we calculate the gravitational radiation generated by the candidate OJ287 in a double black hole system. Compared with the observational results of pulsar PSR B185509, the method of timing residuals is used to further demonstrate the rationality of OJ287 as a double black hole system. Under the selected initial values, the orbits of the main black hole and the secondary black hole drift to a certain extent, which is caused by the motion of the center of mass in harmonious coordinates. At the same time, we give the energy flow of gravitational radiation in a double black hole system. We find that the positive and negative sign of the energy flow varies with the order of alternating sign: EN0,E1PN0,E2PN0, which is consistent with the change of the positive and negative sign of the radiation force we found before. We compare the relative orbits in harmonious coordinates with those in the centroid system and find that they are close to each other. In addition, we further discuss the other two sets of initial value conditions, which reveal that the initial value conditions in harmonious coordinates are not mediocre.
【学位授予单位】：中国科学技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P145.8;P145.6
【共引文献】
相关期刊论文 前1条
1 Ming-Lei Tong;Cheng-Shi Zhao;Bao-Rong Yan;Ting-Gao Yang;Yu-Ping Gao;;Pulsar timing residuals due to individual non-evolving gravitational wave sources[J];Research in Astronomy and Astrophysics;2014年04期
相关博士学位论文 前2条
1 王炎;黑洞对电磁辐射传播所产生的观测效应[D];南京大学;2011年
2 王煈;引力波天文学及数据处理相关问题[D];南京大学;2013年
相关硕士学位论文 前1条
1 李春灵;黑洞—脉冲星系统强引力中的光传播效应[D];中国科学技术大学;2014年
，本文编号：2351391
本文链接：https://www.wllwen.com/kejilunwen/tianwen/2351391.html
