Improved Hough search for gravitational wave pulsars

Abstract

We describe an improved version of the Hough transform search for continuous gravitational waves from isolated neutron stars assuming the input to be short segments of Fourier transformed data. The method presented here takes into account possible non-stationarities of the detector noise and the amplitude modulation due to the motion of the detector. These two effects are taken into account for the first stage only, i.e. the peak selection, to create the time-frequency map of our data, while the Hough transform itself is performed in the standard way.

6 pages, Accepted in Journal of Physics: Conference Series

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• Search methods for continuous gravitational-wave signals from unknown sources in the advanced-detector era
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• First low frequency all-sky search for continuous gravitational wave signals
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• Using generalized PowerFlux methods to estimate the parameters of periodic gravitational waves
• All-sky Search for Periodic Gravitational Waves in the O1 LIGO Data
• Report on an all-sky LIGO search for periodic gravitational waves in the S4 data
• Hierarchical Hough all-sky search for periodic gravitational waves in LIGO S5 data
• Finding binary millisecond pulsars with the Hough transform
• BinaryGFH-v2: Improved method to search for gravitational waves from sub-solar-mass, ultra-compact binaries using the Generalized Frequency-Hough Transform