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Report on the second Mock LISA data challenge

Stanislav Babak1, John G Baker2, Matthew J Benacquista3, Neil J Cornish4, Jeff Crowder5, Curt Cutler5,6, Shane L Larson7, Tyson B Littenberg4, Edward K Porter1, Michele Vallisneri5,6, Alberto Vecchio8,9 (the Mock LISA data challenge task force), Gerard Auger10, Leor Barack11, Arkadiusz Błaut12, Ed Bloomer13, Duncan A Brown6,14,15, Nelson Christensen16, James Clark13, Stephen Fairhurst6,15,17, Jonathan R Gair18, Hubert Halloin10, Martin Hendry13, Arturo Jimenez3, Andrzej Królak19, Ilya Mandel6,9, Chris Messenger13, Renate Meyer20, Soumya Mohanty3, Rajesh Nayak3, Antoine Petiteau10, Matt Pitkin13, Eric Plagnol10, Reinhard Prix1, Emma L Robinson8, Christian Roever20, Pavlin Savov6, Alexander Stroeer8,9, Jennifer Toher13, John Veitch8, Jean–Yves Vinet21, Linqing Wen1, John T Whelan1 and Graham Woan13 (the Challenge-2 participants)

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The Mock LISA data challenges are a program to demonstrate LISA data-analysis capabilities and to encourage their development. Each round of challenges consists of several data sets containing simulated instrument noise and gravitational waves from sources of undisclosed parameters. Participants are asked to analyze the data sets and report the maximum information about the source parameters. The challenges are being released in rounds of increasing complexity and realism: here we present the results of Challenge 2, issued in Jan 2007, which successfully demonstrated the recovery of signals from nonspinning supermassive-black-hole binaries with optimal SNRs between ~10 and 2000, from ~20 000 overlapping galactic white-dwarf binaries (among a realistically distributed population of 26 million), and from the extreme-mass-ratio inspirals of compact objects into central galactic black holes with optimal SNRs ~100.


PACS

04.80.Nn Gravitational wave detectors and experiments

04.30.Db Wave generation and sources

97.20.Pm Supergiant stars

04.70.-s Physics of black holes

97.20.Rp Faint blue stars (including blue stragglers), white dwarfs, degenerate stars, nuclei of planetary nebulae

97.60.Lf Black holes

MSC

85A05 Galactic and stellar dynamics

83C57 Black holes

83C35 Gravitational waves

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 11 (7 June 2008)

Received 11 November 2007

Published 15 May 2008



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