标题： 混合黑洞双星初始数据 显示英文标题

标题： Hybrid black-hole binary initial data

摘要： 传统的黑洞双星刺点初始数据是共形平坦的。 这一非物理假设伴随着二元系统过去生命中缺乏辐射特征。 因此，从该数据的演化中提取的波形显示出突兀的跳跃。 在 Kelly 等人 [Class.Quant.Grav.27:114005,2010] 的工作中，采用了一种新的基于后牛顿（PN）计算推导出辐射内容的黑洞双星初始数据，并将其应用于数值相对论中的刺点演化。 这种数据满足到 2.5PN 阶的约束方程，并包含一个横迹无“波浪状”的度规贡献，违反了共形平坦的标准假设。 尽管演化中包含较少的虚假辐射，但仍存在一些不希望出现的特性；即非物理的视界质量损失和较大的初始轨道偏心率。 通过引入一种混合方法来评估初始数据，我们显著减少了这些不希望出现的特性。 显示英文摘要

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.