All-sky radiometer for narrowband gravitational waves using folded data

We demonstrate an all-sky search for persistent, narrowband gravitational waves using mock data. The search employs radiometry to sidereal-folded data in order to uncover persistent sources of gravitational waves with minimal assumptions about the signal model. The method complements continuous-wave...

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Bibliographic Details
Published in:Physical review. D 2018-09, Vol.98 (6), p.064018, Article 064018
Main Authors: Goncharov, Boris, Thrane, Eric
Format: Article
Language:English
Subjects:
Circular polarization
Computer simulation
Continuous radiation
Data search
False alarms
Gravitation
Gravitational waves
Narrowband
Neutron stars
Radiometry
Random noise
Stellar rotation
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Summary:We demonstrate an all-sky search for persistent, narrowband gravitational waves using mock data. The search employs radiometry to sidereal-folded data in order to uncover persistent sources of gravitational waves with minimal assumptions about the signal model. The method complements continuous-wave searches, which are finely tuned to search for gravitational waves from rotating neutron stars, while providing a means of detecting more exotic sources that might be missed by dedicated continuous-wave techniques. We apply the algorithm to simulated Gaussian noise. We project the strain amplitude sensitivity assuming circularly polarized signals for the LIGO network in the first observing run to be h0≈1.2×10−24 (1% false alarm probability, 10% false dismissal probability). We include a treatment of instrumental lines and detector artifacts using time-shifted LIGO data from the first observing run.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.98.064018