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.
Unequal-mass boson-star binaries: initial data and merger dynamics / Evstafyeva, Tamara; Sperhake, Ulrich; Helfer, Thomas; Croft, Robin; Radia, Miren; Ge, Bo-Xuan; Lim, Eugene A. - In: CLASSICAL AND QUANTUM GRAVITY. - ISSN 0264-9381. - 40:8(2023), pp. 1-37. [10.1088/1361-6382/acc2a8]
Unequal-mass boson-star binaries: initial data and merger dynamics
Croft, Robin;
2023
Abstract
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.| File | Dimensione | Formato | |
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