How to find long narrow-band gravitational wave transients with unknown frequency evolution

Péter Raffai, Z. Frei, Zsuzsa Márka, Szabolcs Márka

Research output: Article

8 Citations (Scopus)

Abstract

We present two general methods, the so-called Locust and the generalized Hough algorithm, to search for narrow-band signals of moderate frequency evolution and limited duration in datastreams of gravitational wave detectors. Some models of long gamma-ray bursts (e.g. van Putten et al 2004 Phys. Rev. D 69 044007) predict narrow-band gravitational wave burst signals of limited duration emitted during the gamma-ray burst event. These types of signals give rise to curling traces of local maxima in the time-frequency space that can be recovered via image processing methods (Locust and Hough). Tests of the algorithms in the context of the van Putten model were carried out using injected simulated signals into Gaussian white noise and also into LIGO-like data. The Locust algorithm has the relative advantage of having higher speed and better general sensitivity; however, the generalized Hough algorithm is more tolerant of trace discontinuities. A combination of the two algorithms increases search robustness and sensitivity at the price of execution speed.

Original languageEnglish
Article numberS09
JournalClassical and Quantum Gravity
Volume24
Issue number19
DOIs
Publication statusPublished - okt. 7 2007

Fingerprint

locusts
gravitational waves
narrowband
trucks
gamma ray bursts
LIGO (observatory)
sensitivity
white noise
image processing
bursts
discontinuity
high speed
detectors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

How to find long narrow-band gravitational wave transients with unknown frequency evolution. / Raffai, Péter; Frei, Z.; Márka, Zsuzsa; Márka, Szabolcs.

In: Classical and Quantum Gravity, Vol. 24, No. 19, S09, 07.10.2007.

Research output: Article

@article{6fed765bc38b4e2da3321ad6b6cdacfc,
title = "How to find long narrow-band gravitational wave transients with unknown frequency evolution",
abstract = "We present two general methods, the so-called Locust and the generalized Hough algorithm, to search for narrow-band signals of moderate frequency evolution and limited duration in datastreams of gravitational wave detectors. Some models of long gamma-ray bursts (e.g. van Putten et al 2004 Phys. Rev. D 69 044007) predict narrow-band gravitational wave burst signals of limited duration emitted during the gamma-ray burst event. These types of signals give rise to curling traces of local maxima in the time-frequency space that can be recovered via image processing methods (Locust and Hough). Tests of the algorithms in the context of the van Putten model were carried out using injected simulated signals into Gaussian white noise and also into LIGO-like data. The Locust algorithm has the relative advantage of having higher speed and better general sensitivity; however, the generalized Hough algorithm is more tolerant of trace discontinuities. A combination of the two algorithms increases search robustness and sensitivity at the price of execution speed.",
author = "P{\'e}ter Raffai and Z. Frei and Zsuzsa M{\'a}rka and Szabolcs M{\'a}rka",
year = "2007",
month = "10",
day = "7",
doi = "10.1088/0264-9381/24/19/S09",
language = "English",
volume = "24",
journal = "Classical and Quantum Gravity",
issn = "0264-9381",
publisher = "IOP Publishing Ltd.",
number = "19",

}

TY - JOUR

T1 - How to find long narrow-band gravitational wave transients with unknown frequency evolution

AU - Raffai, Péter

AU - Frei, Z.

AU - Márka, Zsuzsa

AU - Márka, Szabolcs

PY - 2007/10/7

Y1 - 2007/10/7

N2 - We present two general methods, the so-called Locust and the generalized Hough algorithm, to search for narrow-band signals of moderate frequency evolution and limited duration in datastreams of gravitational wave detectors. Some models of long gamma-ray bursts (e.g. van Putten et al 2004 Phys. Rev. D 69 044007) predict narrow-band gravitational wave burst signals of limited duration emitted during the gamma-ray burst event. These types of signals give rise to curling traces of local maxima in the time-frequency space that can be recovered via image processing methods (Locust and Hough). Tests of the algorithms in the context of the van Putten model were carried out using injected simulated signals into Gaussian white noise and also into LIGO-like data. The Locust algorithm has the relative advantage of having higher speed and better general sensitivity; however, the generalized Hough algorithm is more tolerant of trace discontinuities. A combination of the two algorithms increases search robustness and sensitivity at the price of execution speed.

AB - We present two general methods, the so-called Locust and the generalized Hough algorithm, to search for narrow-band signals of moderate frequency evolution and limited duration in datastreams of gravitational wave detectors. Some models of long gamma-ray bursts (e.g. van Putten et al 2004 Phys. Rev. D 69 044007) predict narrow-band gravitational wave burst signals of limited duration emitted during the gamma-ray burst event. These types of signals give rise to curling traces of local maxima in the time-frequency space that can be recovered via image processing methods (Locust and Hough). Tests of the algorithms in the context of the van Putten model were carried out using injected simulated signals into Gaussian white noise and also into LIGO-like data. The Locust algorithm has the relative advantage of having higher speed and better general sensitivity; however, the generalized Hough algorithm is more tolerant of trace discontinuities. A combination of the two algorithms increases search robustness and sensitivity at the price of execution speed.

UR - http://www.scopus.com/inward/record.url?scp=34748831732&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34748831732&partnerID=8YFLogxK

U2 - 10.1088/0264-9381/24/19/S09

DO - 10.1088/0264-9381/24/19/S09

M3 - Article

AN - SCOPUS:34748831732

VL - 24

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

SN - 0264-9381

IS - 19

M1 - S09

ER -