2005/04/01 by Reinhard Prix, R. Prix, Y. Itoh +1 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Atomic and Subatomic Physics Research #Pulsars and Gravitational Waves Research #Seismic Waves and Analysis #gr-qc
paper · pdf · doi:10.1088/0264-9381/22/18/s14
published as Class.Quant.Grav.22:S1003-S1012,2005 · 10 pages, 6 figures; contribution to GWDAW9, submitted to CQG
arxiv created 2005/04/01 · openalex publication_date 2005/09/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
The space of phase parameters (sky position, frequency, spindowns) of a coherent matched-filtering search for continuous gravitational waves from isolated neutron stars shows strong global correlations ('circles in the sky'). In the local limit this can be analysed in terms of a parameter-space metric, but the global properties are less well studied. In this work, we report on our recent progress in understanding these global correlations analytically for short to intermediate (less than a month, say) observation times and neglecting spindowns. The location of these correlation circles in parameter space is found to be determined mostly by the orbital velocity of the earth, while the spin motion of the detector and the antenna patterns only contribute significantly to the amplitude of the detection statistic along these circles.