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arXiv · 1901.01820

The Adaptive Transient Hough method for long-duration gravitational wave transients

Miquel Oliver·David Keitel·Alicia M. Sintes
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Abstract

This paper describes a new semi-coherent method to search for transient gravitational waves of intermediate duration (hours to days). In order to search for newborn isolated neutron stars with their possibly very rapid spin-down, we model the frequency evolution as a power law. The search uses short Fourier transforms from the output of ground-based gravitational wave detectors and applies a weighted Hough transform, also taking into account the signal's amplitude evolution. We present the technical details for implementing the algorithm, its statistical properties, and a sensitivity estimate. A first example application of this method was in the search for GW170817 post-merger signals, and we verify the estimated sensitivity with simulated signals for this case.

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Miquel Oliver, David Keitel, Alicia M. Sintes. 2019-05-24. The Adaptive Transient Hough method for long-duration gravitational wave transients. https://doi.org/10.1103/physrevd.99.104067

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