Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 181102 |
| Seitenumfang | 4 |
| Fachzeitschrift | Physical review letters |
| Jahrgang | 103 |
| Ausgabenummer | 18 |
| Frühes Online-Datum | 27 Okt. 2009 |
| Publikationsstatus | Veröffentlicht - 30 Okt. 2009 |
Abstract
Fully coherent searches (over realistic ranges of parameter space and year-long observation times) for unknown sources of continuous gravitational waves are computationally prohibitive. Less expensive hierarchical searches divide the data into shorter segments which are analyzed coherently, then detection statistics from different segments are combined incoherently. The novel method presented here solves the long-standing problem of how best to do the incoherent combination. The optimal solution exploits large-scale parameter-space correlations in the coherent detection statistic. Application to simulated data shows dramatic sensitivity improvements compared with previously available (ad hoc) methods, increasing the spatial volume probed by more than 2 orders of magnitude at lower computational cost.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Physical review letters, Jahrgang 103, Nr. 18, 181102, 30.10.2009.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Exploiting Large-Scale Correlations to Detect Continuous Gravitational Waves
AU - Pletsch, Holger J.
AU - Allen, Bruce
PY - 2009/10/30
Y1 - 2009/10/30
N2 - Fully coherent searches (over realistic ranges of parameter space and year-long observation times) for unknown sources of continuous gravitational waves are computationally prohibitive. Less expensive hierarchical searches divide the data into shorter segments which are analyzed coherently, then detection statistics from different segments are combined incoherently. The novel method presented here solves the long-standing problem of how best to do the incoherent combination. The optimal solution exploits large-scale parameter-space correlations in the coherent detection statistic. Application to simulated data shows dramatic sensitivity improvements compared with previously available (ad hoc) methods, increasing the spatial volume probed by more than 2 orders of magnitude at lower computational cost.
AB - Fully coherent searches (over realistic ranges of parameter space and year-long observation times) for unknown sources of continuous gravitational waves are computationally prohibitive. Less expensive hierarchical searches divide the data into shorter segments which are analyzed coherently, then detection statistics from different segments are combined incoherently. The novel method presented here solves the long-standing problem of how best to do the incoherent combination. The optimal solution exploits large-scale parameter-space correlations in the coherent detection statistic. Application to simulated data shows dramatic sensitivity improvements compared with previously available (ad hoc) methods, increasing the spatial volume probed by more than 2 orders of magnitude at lower computational cost.
UR - http://www.scopus.com/inward/record.url?scp=70350557203&partnerID=8YFLogxK
U2 - 10.48550/arXiv.0906.0023
DO - 10.48550/arXiv.0906.0023
M3 - Article
AN - SCOPUS:70350557203
VL - 103
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 18
M1 - 181102
ER -