Narrow-band search for gravitational waves from known pulsars using the second LIGO observing run

Abstract

Isolated spinning neutron stars, asymmetric with respect to their rotation axis, are expected to be sources of continuous gravitational waves. The most sensitive searches for these sources are based on accurate matched filtering techniques, that assume the continuous wave to be phase-locked with the pulsar beamed emission. While matched filtering maximizes the search sensitivity, a significant signal-to-noise ratio loss will happen in case of a mismatch between the assumed and the true signal phase evolution. Narrow-band algorithms allow for a small mismatch in the frequency and spin-down values of the pulsar while integrating coherently the entire data set. In this paper we describe a narrow-band search using LIGO O2 data for the continuous wave emission of 33 pulsars. No evidence for a continuous wave signal has been found and upper-limits on the gravitational wave amplitude, over the analyzed frequency and spin-down volume, have been computed for each of the targets. In this search we have surpassed the spin-down limit for some of the pulsars already present in the O1 LIGO narrow-band search, such as J1400\textminus6325 J1813\textminus1246, J1833\textminus1034, J1952+3252, and for new targets such as J0940\textminus5428 and J1747\textminus2809. For J1400\textminus6325, J1833\textminus1034 and J1747\textminus2809 this is the first time the spin-down limit is surpassed.

6 figures, 4 tables

References in corpus (20)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
• The ATNF Pulsar Catalogue
• GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• An eclipsing binary distance to the Large Magellanic Cloud accurate to 2 per cent
• On Pulsar Distance Measurements and their Uncertainties
• Upper limits on gravitational wave emission from 78 radio pulsars
• Calibration Uncertainty for Advanced LIGO's First and Second Observing Runs
• A Precise Proper Motion for the Crab Pulsar, and the Difficulty of Testing Spin-Kick Alignment for Young Neutron Stars
• Directed searches for continuous gravitational waves from binary systems: parameter-space metrics and optimal Scorpius X-1 sensitivity
• First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data
• A directed search for gravitational waves from Scorpius X-1 with initial LIGO
• Narrow-band search of continuous gravitational-wave signals from Crab and Vela pulsars in Virgo VSR4 data
• Discovery of a Young, Energetic 70.5 ms Pulsar Associated with the TeV Gamma-ray Source HESS J1837-069
• A method for narrow-band searches of continuous gravitational wave signals
• On the puzzling high-energy pulsations of the energetic radio-quiet $\gamma$-ray pulsar J1813$-$1246
• XMM-Newton Observations of Young and Energetic Pulsar J2022+3842
• Parameters of rotating neutron stars with and without hyperons

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