A Three-Stage Search for Supermassive Black Hole Binaries in LISA Data - General Relativity and Quantum CosmologyReportar como inadecuado




A Three-Stage Search for Supermassive Black Hole Binaries in LISA Data - General Relativity and Quantum Cosmology - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Gravitational waves from the inspiral and coalescence of supermassiveblack-hole SMBH binaries with masses ~10^6 Msun are likely to be among thestrongest sources for the Laser Interferometer Space Antenna LISA. Wedescribe a three-stage data-analysis pipeline designed to search for andmeasure the parameters of SMBH binaries in LISA data. The first stage uses atime-frequency track-search method to search for inspiral signals and provide acoarse estimate of the black-hole masses m 1, m 2 and of the coalescence timeof the binary t c. The second stage uses a sequence of matched-filter templatebanks, seeded by the first stage, to improve the measurement accuracy of themasses and coalescence time. Finally, a Markov Chain Monte Carlo search is usedto estimate all nine physical parameters of the binary. Using results from thesecond stage substantially shortens the Markov Chain burn-in time and allows usto determine the number of SMBH-binary signals in the data before startingparameter estimation. We demonstrate our analysis pipeline using simulated datafrom the first LISA Mock Data Challenge. We discuss our plan for improving thispipeline and the challenges that will be faced in real LISA data analysis.



Autor: Duncan A. Brown, Jeff Crowder, Curt Cutler, Ilya Mandel, Michele Vallisneri

Fuente: https://arxiv.org/







Documentos relacionados