OJ287：和諧坐標(biāo)下的后牛頓計算和脈沖星計時殘差檢驗
發(fā)布時間：2018-11-23 11:15
【摘要】：我們在和諧坐標(biāo)下應(yīng)用后牛頓近似,計算出了雙黑洞系統(tǒng)候選者OJ287所產(chǎn)生的引力輻射。對比脈沖星PSR B1855+09的觀測結(jié)果,運(yùn)用計時殘差的方法進(jìn)一步展示了OJ287是雙黑洞系統(tǒng)的合理性。在我們所選定的一組初值下,主黑洞和次黑洞的運(yùn)動軌道都有一定的漂移,這是由于質(zhì)心在和諧坐標(biāo)下的運(yùn)動造成的。同時我們給出了雙黑洞系統(tǒng)引力輻射的能流,我們發(fā)現(xiàn)能流的正負(fù)號隨著階次交替變號：EN0,E1PN0,E2PN0,這與我們之前發(fā)現(xiàn)的輻射力的正負(fù)號變化一致。 我們比較了和諧坐標(biāo)下和質(zhì)心系下的相對軌道,發(fā)現(xiàn)它們比較接近。另外,我們還進(jìn)一步討論了其他兩組初值條件,揭示和諧坐標(biāo)下的初值條件問題并不平庸。
[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.
【學(xué)位授予單位】：中國科學(xué)技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：P145.8;P145.6
本文編號：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.
【學(xué)位授予單位】：中國科學(xué)技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：P145.8;P145.6
【共引文獻(xiàn)】
相關(guān)期刊論文 前1條
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
相關(guān)博士學(xué)位論文 前2條
1 王炎;黑洞對電磁輻射傳播所產(chǎn)生的觀測效應(yīng)[D];南京大學(xué);2011年
2 王煈;引力波天文學(xué)及數(shù)據(jù)處理相關(guān)問題[D];南京大學(xué);2013年
相關(guān)碩士學(xué)位論文 前1條
1 李春靈;黑洞—脈沖星系統(tǒng)強(qiáng)引力中的光傳播效應(yīng)[D];中國科學(xué)技術(shù)大學(xué);2014年
，本文編號：2351391
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