Targeted Search for Gravitational Waves from Highly Spinning Light Compact Binaries

Abstract

Searches for gravitational waves from compact-binary mergers, which to date have reported $\sim 100$ observations, have previously ignored binaries whose components are both consistent with the mass of neutron stars $(1M_{\odot }$ to $2M_{\odot })$ and have high dimensionless spin $>0.05$. While previous searches targeted sources that are representative of observed neutron star binaries in the galaxy, it is already known that neutron stars can regularly be spun up to a dimensionless spin of $\sim 0.4$, and in principle reach up to $\sim 0.7$ before breakup would occur. Furthermore, there may be primordial black hole binaries or exotic formation mechanisms to produce light black holes. In these cases, it is possible for the binary constituent to be spun up beyond that achievable by a neutron star. A single detection of this type of source would reveal a novel formation channel for compact-binaries. To determine if there is evidence for any such sources, we use PyCBC to conduct a targeted search of LIGO and Virgo data for light compact objects with high spin. Our analysis detects previously known observations GW170817 and GW200115; however, we report no additional mergers. The most significant candidate, not previously known, is consistent with the noise distribution, and so we constrain the merger rate of spinning light binaries.

v3: add comparison with lvk subsolar search; accepted by MNRAS; 6 pages, 5 figures, 1 table; data release at https://github.com/gwastro/high-spin-light-binary

References in corpus (13)

• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• Advanced LIGO
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• Observation of gravitational waves from two neutron star-black hole coalescences
• Comparison of post-Newtonian templates for compact binary inspiral signals in gravitational-wave detectors
• Estimating the Contribution of Dynamical Ejecta in the Kilonova Associated with GW170817
• The MBTA Pipeline for Detecting Compact Binary Coalescences in the Third LIGO-Virgo Observing Run
• The Loudest Event Statistic: General Formulation, Properties and Applications
• Cosmic Explorer: A Submission to the NSF MPSAC ngGW Subcommittee
• Systematic errors in estimation of gravitational-wave candidate significance
• Monte-Carlo and Bayesian techniques in gravitational wave burst data analysis

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