GW9 - Advanced Data-Analysis Techniques for Gravitational-Wave Detection |
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Speaker |
Intini, Giuseppe |
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Coauthors |
Leaci, Paola; Astone, Pia; D'Antonio, Sabrina; Frasca, Sergio; Mastrogiovanni, Simone; Miller, Andrew; Palomba, Cristiano; Piccinni, Ornella Juliana; Singhal Akshat |
| Talk Title |
Innovative strategies to streamline continuous gravitational-wave candidates in the advanced LIGO-Virgo detector era |
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Abstract |
All-sky searches for continuous gravitational waves require a very high computational cost. For this reason it is more convenient to perform a hierarchical search rather than a coherent one. The Frequency-Hough pipeline uses a tool -known as Hough transform- to achieve this goal. Anyway, the number of candidates typically returned by such pipeline is quite high (O(10^12)). To solve this problem we have deeply studied the patterns that these candidates produce in the search parameter space (given by the source frequency, frequency derivatives and sky position) as a consequence of the Earth Doppler modulation. This has resulted into a chain of novel veto algorithms, which is useful to streamline candidates not consistent with a continuous-wave signal. |
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