The excitation of quadrupolar quasinormal modes in a neutron star leads to the emission of a short, distinctive, burst of gravitational radiation in the form of a decaying sinusoid or "ring-down." We present a Bayesian analysis method which incorporates relevant prior information about the source and known instrumental artifacts to conduct a robust search for the gravitational wave emission associated with pulsar glitches and soft γ-ray repeater flares. Instrumental transients are modeled as sine-Gaussian and their evidence, or marginal likelihood, is compared with that of Gaussian white noise and ring-downs via the "odds-ratio." Tests using simulated data with a noise spectral density similar to the LIGO interferometer around 1 kHz yield 50% detection efficiency and 1% false alarm probability for ring-down signals with signal-to-noise ratio ρ=5.2. For a source at 15 kpc this requires an energy of 1.3×10-5M c2 to be emitted as gravitational waves. © 2007 The American Physical Society.
CITATION STYLE
Clark, J., Heng, I. S., Pitkin, M., & Woan, G. (2007). Evidence-based search method for gravitational waves from neutron star ring-downs. Physical Review D - Particles, Fields, Gravitation and Cosmology, 76(4). https://doi.org/10.1103/PhysRevD.76.043003
Mendeley helps you to discover research relevant for your work.