Open AccessAll‐sky search algorithms for monochromatic signals in resonant bar gravitational wave detector data
Author(s) -
Lobo J. A.,
Montero M.
Publication year - 1998
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1998.02016.x
Subject(s) - physics , detector , monochromatic color , gravitational wave , sensitivity (control systems) , bar (unit) , amplitude , sky , algorithm , rotation (mathematics) , signal (programming language) , noise (video) , antenna (radio) , optics , astrophysics , electronic engineering , computer science , artificial intelligence , telecommunications , meteorology , image (mathematics) , programming language , engineering
In this paper we design and develop several filtering strategies for the analysis of data generated by a resonant bar gravitational wave (GW) antenna, with the goal of assessing the presence (or absence) therein of long‐duration monochromatic GW signals, as well as the eventual amplitude and frequency of the signals, within the sensitivity band of the detector. Such signals are most likely generated in the fast rotation of slightly asymmetric spinning stars. We develop practical procedures, together with a study of their statistical properties, which will provide us with useful information on the performance of each technique. The selection of candidate events will then be established according to threshold‐crossing probabilities, based on the Neyman–Pearson criterion. In particular, it will be shown that our approach, based on phase estimation, presents a better signal‐to‐noise ratio than does pure spectral analysis, the most common approach.