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  Tuning into Scorpius X-1: adapting a continuous gravitational-wave search for a known binary system

Meadors, G. D., Goetz, E., & Riles, K. (2016). Tuning into Scorpius X-1: adapting a continuous gravitational-wave search for a known binary system. Classical and quantum gravity, 33(10): 105017. doi:10.1088/0264-9381/33/10/105017.

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Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-6342-5 Versions-Permalink: http://hdl.handle.net/21.11116/0000-0001-E421-8
Genre: Zeitschriftenartikel

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1512.02105.pdf (Preprint), 476KB
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 Urheber:
Meadors, Grant David1, Autor              
Goetz, Evan2, 3, Autor              
Riles, Keith, Autor
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              
2Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
3Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_2630691              

Inhalt

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Schlagwörter: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Zusammenfassung: We describe how the TwoSpect data analysis method for continuous gravitational waves (GWs) has been tuned for directed sources such as the Low Mass X-ray Binary (LMXB), Scorpius X-1 (Sco X-1). A comparison of five search algorithms generated simulations of the orbital and GW parameters of Sco X-1. Where that comparison focused on relative performance, here the simulations help quantify the sensitivity enhancement and parameter estimation abilities of this directed method, derived from an all-sky search for unknown sources, using doubly Fourier- transformed data. Sensitivity is shown to be enhanced when the source sky location and period are known, because we can run a fully-templated search, bypassing the all-sky hierarchical stage using an incoherent harmonic sum. The GW strain and frequency as well as the projected semi-major axis of the binary system are recovered and uncertainty estimated, for simulated signals that are detected. Upper limits on GW strain are set for undetected signals. Applications to future GW observatory data are discussed. Robust against spin-wandering and computationally tractable despite unknown frequency, this directed search is an important new tool for finding gravitational signals from LMXBs.

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 Datum: 2015-12-072016-04-282016
 Publikationsstatus: Im Druck publiziert
 Seiten: 20 pages, 5 figures
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: arXiv: 1512.02105
DOI: 10.1088/0264-9381/33/10/105017
URI: http://arxiv.org/abs/1512.02105
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Titel: Classical and quantum gravity
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bristol, U.K. : Institute of Physics
Seiten: - Band / Heft: 33 (10) Artikelnummer: 105017 Start- / Endseite: - Identifikator: ISSN: 0264-9381
CoNE: /journals/resource/954925513480_1