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#### First steps towards characterizing the hierarchical algorithm for curves and ridges pipeline

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##### Citation

Heng, I. S., Balasubramanian, R., Sathyaprakash, B. S., & Schutz, B. F. (2004).
First steps towards characterizing the hierarchical algorithm for curves and ridges pipeline.* Classical
and Quantum Gravity,* *21*, S821-S826. doi:10.1088/0264-9381/21/5/065.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-5136-0

##### Abstract

The hierarchical algorithm for curves and ridges is a variation of the burst gravitational wave search algorithm known as TFClusters. In this paper, we examine the detection efficiency of the hierarchical algorithm for curves and ridges by injecting sine-Gaussian burst waveforms with four different central frequencies into data acquired by the GEO600 gravitational wave detector during the S1 run. The fluctuation of the output signal-to-noise ratios was observed to be ~5% for frequencies above 1.5 kHz and at least 15% for frequencies below 1.5 kHz. The uncertainty in the estimation of the arrival time is found to be less than 0.05 s.