2002/06/13 by Neil J. Cornish, Neil Cornish, Shane Larson +1 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Geophysics and Gravity Measurements #Pulsars and Gravitational Waves Research #Radio Astronomy Observations and Technology #gr-qc
paper · pdf · doi:10.1088/0264-9381/20/10/319
published as Class.Quant.Grav. 20 (2003) S163-S170 · 5 pages, 7 figures. References and new comments added
arxiv created 2002/06/13 · openalex publication_date 2003/04/28 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The orbital motion of the laser interferometer space antenna (LISA) produces amplitude, phase and frequency modulations of a gravitational wave signal. The modulations have the effect of spreading a monochromatic gravitational wave signal across a range of frequencies. The modulations encode useful information about the source location and orientation, but they also have the deleterious effect of spreading a signal across a wide bandwidth, thereby reducing the strength of the signal relative to the instrument noise. We describe a simple method for removing the dominant, Doppler component of the signal modulation. The demodulation reassembles the power from a monochromatic source into a narrow spike and provides a quick way to determine the sky locations and frequencies of the brightest gravitational wave sources.