Search for periodic gravitational wave sources with the Explorer detector

Astone, P.; Bassan, M.; Bonifazi, P.; Carelli, P.; Coccia, E.; Cosmelli, C.; D’Antonio, S.; Fafone, V.; Frasca, S.; Minenkov, Y.; Modena, I.; Modestino, G.; Moleti, Arturo; Pallottino, G. V.; Papa, M. A.; Pizzella, G.; Quintieri, L.; Ronga, F.; Terenzi, R.; Visco, M.

doi:10.1103/physrevd.65.022001

Cited by 42 publications

(29 citation statements)

References 14 publications

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“…The first upper limits on gravitational waves from the GC were set by [37], a search analyzing the data of the resonant bar detector EXPLORER in the frequency range 921.32-921. 38 Hz.…”

Section: Discussionmentioning

confidence: 99%

Directed search for continuous gravitational waves from the Galactic center

Aasi¹,

Abadie²,

Abbott³

et al. 2013

Phys. Rev. D

Self Cite

138

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We present the results of a directed search for continuous gravitational waves from unknown, isolated neutron stars in the Galactic center region, performed on two years of data from LIGO's fifth science run from two LIGO detectors. The search uses a semicoherent approach, analyzing coherently 630 segments, each spanning 11.5 hours, and then incoherently combining the results of the single segments. It covers gravitational wave frequencies in a range from 78 to 496 Hz and a frequency-dependent range of first-order spindown values down to -7.86 x 10(-8) Hz/s at the highest frequency. No gravitational waves were detected. The 90% confidence upper limits on the gravitational wave amplitude of sources at the Galactic center are similar to 3.35 x 10(-25) for frequencies near 150 Hz. These upper limits are the most constraining to date for a large-parameter-space search for continuous gravitational wave signals

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“…The first upper limits on gravitational waves from the GC were set by [37], a search analyzing the data of the resonant bar detector EXPLORER in the frequency range 921.32-921. 38 Hz.…”

Section: Discussionmentioning

confidence: 99%

Directed search for continuous gravitational waves from the Galactic center

Aasi¹,

Abadie²,

Abbott³

et al. 2013

Phys. Rev. D

Self Cite

138

View full text Add to dashboard Cite

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“…Such a kind of analysis cannot be performed with the classical optimal methods used in gravitational wave experiments, based on the socalled matched filter, which can be used for targeted searches (e.g. Astone et al 2002;Abbot et al 2004), but that are infeasible for wide-area searches, due to the enormous computing power they would require. Alternative, non-optimal, methods have been developed by various groups in the world (Frasca & La Posta 1991;Astone, Frasca & Papa 1997;Brady et al 1998;Schutz & Papa 1999;Frasca 2000).…”

Section: E T E C T I O N O F C O N T I N U O U S G R Av I Tat I O Nmentioning

confidence: 99%

Simulation of a population of isolated neutron stars evolving through the emission of gravitational waves

Palomba

2005

Monthly Notices of the Royal Astronomical Society

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We study, via a Monte Carlo simulation, a population of isolated asymmetric neutron stars where the magnitude of the magnetic field is low enough so that the dynamical evolution is dominated by the emission of gravitational waves. A starting population, with age uniformly distributed back to 100 Myr (or 500 Myr) and endowed with a birth kick velocity, is evolved in the Galactic gravitational potential to the present time. In describing the initial spatial distribution, the Gould belt, with an enhanced neutron star formation rate, is taken into account. Different models for the initial period distribution are considered. The star ellipticity, measuring the amount of deformation, is drawn from an exponential distribution. We estimate the detectability of the emitted gravitational signals by the first and planned second generation of interferometric detectors. Results are parametrized by the fraction of the whole galactic neutron star population made up of these kinds of sources. Some possible mechanisms, which would make possible the existence of such a population, are discussed. A comparison of the gravitational spin‐down with the braking due to a possible interaction of the neutron star with the interstellar medium is also presented.

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“…Once decided a particular source to look for we proceed with the extraction of a small band, covering a fraction of Hz, around the expected source frequency at the time of the analysis. The band extraction can be done in different ways; the one we use is based on the construction of the so-called "analytical signal" (see [5] and references therein). The analytical signal is complex and has a sampling rate much lower than the original one (typically 1 second), and it has the property that its power spectrum in the selected band is identical to the original power spectrum in that band.…”

Section: Preparation Of the Datamentioning

confidence: 99%

A method for detection of known sources of continuous gravitational wave signals in non-stationary data

Astone

D’Antonio

Frasca

et al. 2010

Class. Quantum Grav.

133

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A method for searching continuous gravitational wave signals from isolated neutron stars whose position, frequency and frequency evolution are known is described in this paper. This method is applied to data of interferometric detectors such as Virgo. The method is based on the use of 5-vectors, which are the Fourier components of the signal and data at five frequencies around the source intrinsic frequency. The main characteristics of the method are its simplicity and the strong reduction of the computing time needed for the analysis and in particular for all the simulation procedures. We also introduce here the concept of ‘coherence’ to state the reliability of a detection.

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Search for periodic gravitational wave sources with the Explorer detector

Cited by 42 publications

References 14 publications

Directed search for continuous gravitational waves from the Galactic center

Directed search for continuous gravitational waves from the Galactic center

Simulation of a population of isolated neutron stars evolving through the emission of gravitational waves

A method for detection of known sources of continuous gravitational wave signals in non-stationary data

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