Performance of Particle Swarm Optimization on the fully-coherent all-sky search for gravitational waves from compact binary coalescences

Autor:	Weerathunga, Thilina S., Mohanty, Soumya D.
Rok vydání:	2017
Předmět:	General Relativity and Quantum Cosmology
Zdroj:	Phys. Rev. D 95, 124030 (2017)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.95.124030
Popis:	Fully-coherent all-sky search for gravitational wave (GW) signals from the coalescence of compact object binaries is a computationally expensive task. Approximations, such as semi-coherent coincidence searches, are currently used to circumvent the computational barrier with a concomitant loss in sensitivity. We explore the effectiveness of Particle Swarm Optimization (PSO) in addressing this problem. Our results, using a simulated network of detectors with initial LIGO design sensitivities and a realistic signal strength, show that PSO can successfully deliver a fully-coherent all-sky search with < 1/10 the number of likelihood evaluations needed for a grid-based search. Comment: 14 pages, 8 figures, Corrected typos, Eq. 40 has been corrected
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1703.01521 Zobrazit plný text záznamu View this record from Arxiv