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          Institute: MPI für Gravitationsphysik     Collection: Astrophysical Relativity     Display Documents



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ID: 442739.0, MPI für Gravitationsphysik / Astrophysical Relativity
Cosmic swarms: a search for supermassive black holes in the LISA data stream with a hybrid evolutionary algorithm
Authors:Gair, Jonathan R.; Porter, Edward K.
Date of Publication (YYYY-MM-DD):2009-11-21
Title of Journal:Classical and Quantum Gravity
Volume:26
Issue / Number:22
Sequence Number of Article:225004
Review Status:not specified
Audience:Not Specified
Abstract / Description:We describe a hybrid evolutionary algorithm that can simultaneously search for multiple supermassive black hole binary (SMBHB) inspirals in LISA data. The algorithm mixes evolutionary computation, Metropolis–Hastings methods and Nested Sampling. The inspiral of SMBHBs presents an interesting problem for gravitational wave data analysis since, due to the LISA response function, the sources have a bi-modal sky solution. We show here that it is possible not only to detect multiple SMBHBs in the data stream, but also to investigate simultaneously all the various modes of the global solution. In all cases, the algorithm returns parameter determinations within 5σ (as estimated from the Fisher matrix) of the true answer, for both the actual and antipodal sky solutions.
External Publication Status:published
Document Type:Article
Communicated by:Bernhard F. Schutz
Affiliations:MPI für Gravitationsphysik/Astrophysical Relativity
Identifiers:ISI:000271090100008 [ID No:1]
ISSN:0264-9381 [ID No:2]
DOI:10.1088/0264-9381/26/22/225004
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