Results of an all-sky high-frequency Einstein@Home search for continuous gravitational waves in LIGO's fifth science run

Abstract

We present results of a high-frequency all-sky search for continuous gravitational waves from isolated compact objects in LIGO's 5th Science Run (S5) data, using the computing power of the Einstein@Home volunteer computing project. This is the only dedicated continuous gravitational wave search that probes this high frequency range on S5 data. We find no significant candidate signal, so we set 90%-confidence level upper-limits on continuous gravitational wave strain amplitudes. At the lower end of the search frequency range, around 1250 Hz, the most constraining upper-limit is $5.0\times 10^{-24}$, while at the higher end, around 1500 Hz, it is $6.2\times 10^{-24}$. Based on these upper-limits, and assuming a fiducial value of the principal moment of inertia of $10^{38}$kgm${}^2$, we can exclude objects with ellipticities higher than roughly $2.8\times 10^{-7}$ within 100 pc of Earth with rotation periods between 1.3 and 1.6 milliseconds.

13 pages, 10 figures, 5 tables; v1: initial submission; v2: internal review; v3-4: journal review; v5: copyedited version; v6-7 (final): updated references and minor typos corrected

References in corpus (8)

• LIGO: The Laser Interferometer Gravitational-Wave Observatory
• Calibration of the LIGO Gravitational Wave Detectors in the Fifth Science Run
• Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data
• Search method for long-duration gravitational-wave transients from neutron stars
• Parameter-space metric of semicoherent searches for continuous gravitational waves
• Parameter-space correlations of the optimal statistic for continuous gravitational-wave detection
• An Einstein@home search for continuous gravitational waves from Cassiopeia A
• Gravitational wave transient signal emission via Ekman pumping in neutron stars during post-glitch relaxation phase

Cited by in corpus (12)

• First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data
• Fast and Accurate Sensitivity Estimation for Continuous-Gravitational-Wave Searches
• Full Band All-sky Search for Periodic Gravitational Waves in the O1 LIGO Data
• Searches for continuous gravitational waves from neutron stars: A twenty-year retrospective
• Einstein@Home all-sky search for continuous gravitational waves in LIGO O2 public data
• An Einstein@home search for continuous gravitational waves from Cassiopeia A
• Results of the deepest all-sky survey for continuous gravitational waves on LIGO S6 data running on the Einstein@Home volunteer distributed computing project
• Hierarchical follow-up of sub-threshold candidates of an all-sky Einstein@Home search for continuous gravitational waves on LIGO sixth science run data
• Adaptive clustering procedure for continuous gravitational wave searches
• A new veto for continuous gravitational wave searches
• Implementation of a new weave-based search pipeline for continuous gravitational waves from known binary systems
• Efficient Estimation of Barycentered Relative Time Delays for Distant Gravitational Wave Sources