NDLI: Gravitational wave searches for aligned-spin binary neutron stars using nonspinning templates

Content Provider	Springer Nature Link
Author	Cho, Hee Suk Lee, Chang Hwan
Copyright Year	2018
Abstract	We study gravitational wave searches for merging binary neutron stars (NSs). We use nonspinning template waveforms towards the signals emitted from aligned-spin NS-NS binaries, in which the spins of the NSs are aligned with the orbital angular momentum. We use the TaylorF2 waveform model, which can generate inspiral waveforms emitted from aligned-spin compact binaries. We employ the single effective spin parameter χ$_{eff}$ to represent the effect of two component spins (χ$_{1}$, χ$_{2}$) on the wave function. For a target system, we choose a binary consisting of the same component masses of 1.4M $_{⊙}$ and consider the spins up to χ$_{ i }$ = 0.4. We investigate fitting factors of the nonspinning templates to evaluate their efficiency in gravitational wave searches for the aligned-spin NS-NS binaries. We find that the templates can achieve the fitting factors exceeding 0.97 only for the signals in the range of −0.2 ≲ χ$_{eff}$ ≲ 0. Therefore, we demonstrate the necessity of using aligned-spin templates not to lose the signals outside that range. We also show how much the recovered total mass can be biased from the true value depending on the spin of the signal.
Starting Page	1
Ending Page	5
Page Count	5
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	72
Issue Number	1
e-ISSN	19768524
Language	English
Publisher	The Korean Physical Society
Publisher Date	2018-01-07
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Neutron star Gravitational waves Theoretical, Mathematical and Computational Physics Compact Binary Physics Particle and Nuclear Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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