Unequal-mass boson-star binaries: initial data and merger dynamics
Unequal-mass boson-star binaries: initial data and merger dynamics
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DOI：
10.1088/1361-6382/acc2a8
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发表时间：
2022-12
影响因子：
3.5
通讯作者：
T. Evstafyeva;U. Sperhake;T. Helfer;R. Croft;Miren Radia;Bo-Xuan Ge;Eugene A. Lim
中科院分区：
文献类型：
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作者：
T. Evstafyeva;U. Sperhake;T. Helfer;R. Croft;Miren Radia;Bo-Xuan Ge;Eugene A. Lim
我们提出了Helfer等人（2019年物理学）中为等质量致密双星导出的初始数据结构的推广。Rev. D 99 044046；2022类。量子重力。39 074001)到任意质量比。我们演示了这些改进的初始数据如何避免在等质量玻色子-星双星的碰撞动力学中出现大量虚假的伪像，其方式与以前用限制于等质量情况的更简单的方法实现的方式相同。我们利用改进的初始数据详细探讨了等质量和不等质量玻色子星双星合并时相位偏移的影响。
We present a generalisation of the curative initial data construction derived for equal-mass compact binaries in Helfer et al (2019 Phys. Rev. D 99 044046; 2022 Class. Quantum Grav. 39 074001) to arbitrary mass ratios. We demonstrate how these improved initial data avoid substantial spurious artifacts in the collision dynamics of unequal-mass boson-star binaries in the same way as has previously been achieved with the simpler method restricted to the equal-mass case. We employ the improved initial data to explore in detail the impact of phase offsets in the coalescence of equal- and unequal-mass boson star binaries.