Search for Gravitational Waves from Scorpius X-1 in LIGO O3 Data With Corrected Orbital Ephemeris

Abstract

Improved observational constraints on the orbital parameters of the low-mass X-ray binary Scorpius~X-1 were recently published in Killestein et al (2023). In the process, errors were corrected in previous orbital ephemerides, which have been used in searches for continuous gravitational waves from Sco~X-1 using data from the Advanced LIGO detectors. We present the results of a re-analysis of LIGO detector data from the third observing run of Advanced LIGO and Advanced Virgo using a model-based cross-correlation search. The corrected region of parameter space, which was not covered by previous searches, was about 1/3 as large as the region searched in the original O3 analysis, reducing the required computing time. We have confirmed that no detectable signal is present over a range of gravitational-wave frequencies from $25\text{Hz}$ to $1600\text{Hz}$, analogous to the null result of Abbott et al (2022). Our search sensitivity is comparable to that of Abbott et al (2022), who set upper limits corresponding, between $100\text{Hz}$ and $200\text{Hz}$, to an amplitude $h_0$ of about $10^{-25}$ when marginalized isotropically over the unknown inclination angle of the neutron star's rotation axis, or less than $4\times 10^{-26}$ assuming the optimal orientation.

8 pages, 3 figures, 2 tables. Typeset with AASTeX 6.3.1. Accepted for publication in The Astrophysical Journal. arXiv admin note: text overlap with arXiv:2209.02863

References in corpus (16)

• Array Programming with NumPy
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Detecting gravitational wave emission from the known accreting neutron stars
• Directional limits on persistent gravitational waves from Advanced LIGO's first observing run
• SWIGLAL: Python and Octave interfaces to the LALSuite gravitational-wave data analysis libraries
• The cross-correlation search for periodic gravitational waves
• A directed search for gravitational waves from Scorpius X-1 with initial LIGO
• Hidden Markov model tracking of continuous gravitational waves from a binary neutron star with wandering spin. II. Binary orbital phase tracking
• Search for Continuous Gravitational Waves from Scorpius X-1 in LIGO O2 Data
• Model-Based Cross-Correlation Search for Gravitational Waves from Scorpius X-1
• Lattice template placement for coherent all-sky searches for gravitational-wave pulsars
• Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data
• Searches for continuous gravitational waves from Scorpius X-1 and XTE J1751-305 in LIGO's sixth science run
• Model-based cross-correlation search for gravitational waves from the low-mass X-ray binary Scorpius X-1 in LIGO O3 data
• PyFstat: a Python package for continuous gravitational-wave data analysis
• Precision Ephemerides for Gravitational-wave Searches -- IV: Corrected and refined ephemeris for Scorpius X-1

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• Toward a computationally-efficient follow-up pipeline for blind continuous gravitational-wave searches
• New semicoherent targeted search for continuous gravitational waves from pulsars in binary systems
• Colloquium: Multimessenger astronomy with continuous gravitational waves and future detectors
• How much spin wandering can continuous gravitational wave search algorithms handle?
• Sco X-1 as a continuous gravitational waves source: modelling the secular evolution using MESA