Excitable systems as robust event trigger generators in noisy detectors

Year: 2007

Authors: Ciszak M., Camarda M., Marino F., Marin F., Ortolan A.

Autors Affiliation: CNR– Istituto Nazionale di Ottica Applicata, Largo Enrico Fermi 6, I-50125 Firenze, Italy;
Dipartimento di Ingegneria dell’Informazione, Universita` di Padova, Via Gradenigo 6/B, I-35131 Padova, Italy;
INFN Laboratori Nazionali di Legnaro, Viale dell’Universita` 2, I-35020 Legnaro, Padova, Italy;
Dipartimento di Fisica, Universita` di Firenze, Via Sansone 1, 50019 Sesto Fiorentino, Firenze, Italy;
INFN Sezione di Firenze, Via Sansone 1, 50019 Sesto Fiorentino, Firenze, Italy;
INFN, Laboratori Nazionali di Legnaro, Viale dell’Universita` 2, I-35020 Legnaro, Padova, Italy

Abstract: We study the response of a stochastic FitzHugh-Nagumo model to weak external forcing with the aim of implementing a nonlinear algorithm, devised for the robust detection of transient signals such as gravitational wave bursts. In order to test the performance of the algorithm, we exploited the ensemble of maximum entropy signals—known as chirplets. In particular, we investigated the chirplet parameter subspace representing the gravitational wave bursts within range of nowadays interferometric detectors. We found that the false alarm rate can be controlled by changing the constant term in the equation of the slow variable while the detection efficiency is completely insensitive to the kind of injected chirplet. The receiver operating characteristic curves have been evaluated and compared with the performance of power detectors (threshold crossing of local power), which are commonly used for the burst detection.

Journal/Review: PHYSICAL REVIEW D

Volume: 76 (10)      Pages from: 103001-1  to: 103001-8

KeyWords: gravitational waves; excitable systems;
DOI: 10.1103/PhysRevD.76.103001

Citations: 2
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-02-25
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here