Results of the deepest all-sky survey for continuous gravitational waves on LIGO S6 data running on the Einstein@Home volunteer distributed computing project

Abstract

We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the S6 LIGO science run. The search was possible thanks to the computing power provided by the volunteers of the Einstein@Home distributed computing project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population. At the frequency of best strain sensitivity, between $170.5$ and $171$ Hz we set a 90% confidence upper limit of ${5.5}^{-25}$, while at the high end of our frequency range, around 505 Hz, we achieve upper limits $\simeq {10}^{-24}$. At $230$ Hz we can exclude sources with ellipticities greater than $10^{-6}$ within 100 pc of Earth with fiducial value of the principal moment of inertia of $10^{38}{\text{kg m}}^2$. If we assume a higher (lower) gravitational wave spindown we constrain farther (closer) objects to higher (lower) ellipticities.

References in corpus (7)

• Advanced LIGO
• LIGO: The Laser Interferometer Gravitational-Wave Observatory
• The Einstein@Home search for periodic gravitational waves in LIGO S4 data
• Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data
• Postprocessing methods used in the search for continuous gravitational-wave signals from the Galactic Center
• Parameter-space metric of semicoherent searches for continuous gravitational waves
• Parameter-space correlations of the optimal statistic for continuous gravitational-wave detection

Cited by in corpus (8)

• Gravitational wave searches for ultralight bosons with LIGO and LISA
• All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO O2 data
• First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data
• An Einstein@home search for continuous gravitational waves from Cassiopeia A
• Adaptive clustering procedure for continuous gravitational wave searches
• A new veto for continuous gravitational wave searches
• Optimising the choice of analysis method for all-sky searches for continuous gravitational waves with Einstein@Home
• All-sky Search for Periodic Gravitational Waves in the O1 LIGO Data