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arXiv 1012.0886gr-qc
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混合黑洞双星初始数据

Hybrid black-hole binary initial data

Bruno C. Mundim, Bernard J. Kelly, Yosef Zlochower, Hiroyuki Nakano, Manuela Campanelli

摘要:

传统的黑洞二元穿刺初始数据是共形平坦的。这种非物理的假设加上缺乏辐射信号从二进制的过去生活。结果,从该数据的演变中提取的波形显示出突变。Kelly等人[Class.Quant.Grav.27:114005,2010]采用后牛顿(PN)计算方法得到的新的含辐射成分的二元黑洞初始数据,对数值相对论中的演化进行了穿刺.该数据满足2.5PN阶的约束方程,并且包含横向无迹的“波浪”度量贡献,违反了保形平坦的标准假设。虽然演化包含较少的杂散辐射,但也有不希望的特征;非物理视界质量损失和大的初始轨道偏心率。引入混合方法的初始数据评估,我们显着减少这些不需要的功能。

英文摘要:

Traditional black-hole binary puncture initial data is conformally flat. This unphysical assumption is coupled with a lack of radiation signature from the binary's past life. As a result, waveforms extracted from evolutions of this data display an abrupt jump. In Kelly et al. [Class.Quant.Grav.27:114005,2010], a new binary black-hole initial data with radiation contents derived in the post-Newtonian (PN) calculation was adapted to puncture evolutions in numerical relativity. This data satisfies the constraint equations to the 2.5PN order, and contains a transverse-traceless "wavy" metric contribution, violating the standard assumption of conformal flatness. Although the evolution contained less spurious radiation, there were undesired features; the unphysical horizon mass loss and the large initial orbital eccentricity. Introducing a hybrid approach to the initial data evaluation, we significantly reduce these undesired features.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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