A directed search for continuous Gravitational Waves from the Galactic Center

Abstract

We present the results of a directed search for continuous gravitational waves from unknown, isolated neutron stars in the Galactic Center region, performed on two years of data from LIGO's fifth science run from two LIGO detectors. The search uses a semi-coherent approach, analyzing coherently 630 segments, each spanning 11.5 hours, and then incoherently combining the results of the single segments. It covers gravitational wave frequencies in a range from 78 to 496 Hz and a frequency-dependent range of first order spindown values down to -7.86 x 10^-8 Hz/s at the highest frequency. No gravitational waves were detected. We place 90% confidence upper limits on the gravitational wave amplitude of sources at the Galactic Center. Placing 90% confidence upper limits on the gravitational wave amplitude of sources at the Galactic Center, we reach ~3.35x10^-25 for frequencies near 150 Hz. These upper limits are the most constraining to date for a large-parameter-space search for continuous gravitational wave signals.

12 pages, 3 figures, 1 table; PDFLaTeX; to be published in Phys.Rev.D; a science summary can be found at http://www.ligo.org/science/Publication-GCSearch/index.php

References in corpus (42)

• The ATNF Pulsar Catalogue
• The Galactic Center Massive Black Hole and Nuclear Star Cluster
• LIGO: The Laser Interferometer Gravitational-Wave Observatory
• Detector configuration of KAGRA - the Japanese cryogenic gravitational-wave detector
• Data analysis of gravitational-wave signals from spinning neutron stars. I. The signal and its detection
• Neutron Star Mass Measurements. I. Radio Pulsars
• The Accelerations of Stars Orbiting the Milky Way's Central Black Hole
• Maximum elastic deformations of compact stars with exotic equations of state
• Searching for periodic sources with LIGO. II: Hierarchical searches
• Beating the spin-down limit on gravitational wave emission from the Crab pulsar
• Setting upper limits on the strength of periodic gravitational waves using the first science data from the GEO600 and LIGO detectors
• Maximum elastic deformations of relativistic stars
• Observational constraints on hyperons in neutron stars
• Coherent searches for periodic gravitational waves from unknown isolated sources and Scorpius X-1: results from the second LIGO science run
• The generalized F-statistic: multiple detectors and multiple GW pulsars
• Beating the spin-down limit on gravitational wave emission from the Vela pulsar
• Searches for gravitational waves from known pulsars with S5 LIGO data
• Probing the Spacetime Around Sgr A* with Radio Pulsars
• First search for gravitational waves from the youngest known neutron star
• All-sky search for periodic gravitational waves in LIGO S4 data
• The Einstein@Home search for periodic gravitational waves in LIGO S4 data
• A strongly magnetized pulsar within grasp of the Milky Way's supermassive black hole
• Spinning down newborn neutron stars: nonlinear development of the r-mode instability
• Multiwavelength Constraints on Pulsar Populations in the Galactic Center
• How to adapt broad-band gravitational-wave searches for r-modes
• Upper limit map of a background of gravitational waves
• Discovery of Three Pulsars from a Galactic Center Pulsar Population
• Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data
• Directional limits on persistent gravitational waves using LIGO S5 science data
• Einstein@Home search for periodic gravitational waves in early S5 LIGO data
• First all-sky upper limits from LIGO on the strength of periodic gravitational waves using the Hough transform
• All-sky LIGO Search for Periodic Gravitational Waves in the Early S5 Data
• Discovery of two pulsars towards the Galactic Centre
• All-sky Search for Periodic Gravitational Waves in the Full S5 LIGO Data
• Constraints on the dense matter EOS from the measurements of PSR J0737-3039A moment of inertia and PSR J0751+1807 mass
• Exploiting Large-Scale Correlations to Detect Continuous Gravitational Waves
• Are neutron stars with crystalline colour superconducting cores interesting for the LIGO experiment?
• Estimating the sensitivity of wide-parameter-space searches for gravitational-wave pulsars
• A Catalog of Diffuse X-ray-Emitting Features within 20 pc of Sgr A*: Twenty Pulsar Wind Nebulae?
• Parameter-space correlations of the optimal statistic for continuous gravitational-wave detection
• Search for Periodic Gravitational Wave Sources with the Explorer Detector
• Constraining crystalline color superconducting quark matter with gravitational-wave data

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• Gravitational Wave Searches for Post-Merger Remnants of GW170817 and GW190425
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• Target-based Optimization of Advanced Gravitational-Wave Detector Network Operations
• Gravitational waves from spinning neutron stars as not-quite-standard sirens
• Efficient Search for Detection Candidates Using a Peak Finder Strategy for All-Sky-All-Frequency Gravitational Wave Radiometer