Searching for general binary inspirals with gravitational waves
- 1 November 2020
- journal article
- research article
- Published by IOP Publishing in Journal of Cosmology and Astroparticle Physics
- Vol. 2020 (11), 033
- https://doi.org/10.1088/1475-7516/2020/11/033
Abstract
We study whether binary black hole template banks can be used to search for the gravitational waves emitted by general binary coalescences. To recover binary signals from noisy data, matched-filtering techniques are typically required. This is especially true for low-mass systems, with total mass M 10 M⊙, which can inspiral in the LIGO and Virgo frequency bands for thousands of cycles. In this paper, we focus on the detectability of low-mass binary systems whose individual components can have large spin-induced quadrupole moments and small compactness. The quadrupole contributes to the phase evolution of the waveform whereas the compactness affects the merger frequency of the binary. We find that binary black hole templates (with dimensionless quadrupole κ=1) cannot be reliably used to search for objects with large quadrupoles (κ 20) over a wide range of parameter space. This is especially true if the general object is highly spinning and has a larger mass than its binary companion. A binary that consists of objects with small compactness could merge in the LIGO and Virgo frequency bands, thereby reducing its accumulated signal-to-noise ratio during the inspiraling regime. Template banks which include these more general waveforms must therefore be constructed. These extended banks would allow us to realistically search for the existence of new astrophysical and beyond the Standard Model compact objects.Keywords
This publication has 109 references indexed in Scilit:
- I-Love-Q: Unexpected Universal Relations for Neutron Stars and Quark StarsScience, 2013
- Constraining scalar fields with stellar kinematics and collisional dark matterJournal of Cosmology and Astroparticle Physics, 2010
- Relativistic tidal properties of neutron starsPhysical Review D, 2009
- Relativistic theory of tidal Love numbersPhysical Review D, 2009
- Constraining neutron-star tidal Love numbers with gravitational-wave detectorsPhysical Review D, 2008
- Parameter estimation of inspiralling compact binaries using 3.5 post-Newtonian gravitational wave phasing: The nonspinning casePhysical Review D, 2005
- Comparison of search templates for gravitational waves from binary inspiralPhysical Review D, 2001
- Improved filters for gravitational waves from inspiraling compact binariesPhysical Review D, 1998
- Gravitational waves from merging compact binaries: How accurately can one extract the binary’s parameters from the inspiral waveform?Physical Review D, 1994
- Cold Bose starsPhysics Letters B, 1984