Detection of periodic gravitational wave sources by Hough transform in the f versus (f)over-dot plane

被引：32

作者：

Antonucci, F. ^{[1
]}

Astone, P. ^{[1
]}

D'Antonio, S. ^{[2
]}

Frasca, S. ^{[1
,3
]}

Palomba, C. ^{[1
]}

机构：

[1] Ist Nazl Fis Nucl, I-00185 Rome, Italy

[2] Ist Nazl Fis Nucl, I-00100 Rome, Italy

[3] Univ Roma La Sapienza, I-00185 Rome, Italy

来源：

CLASSICAL AND QUANTUM GRAVITY | 2008年 / 25卷 / 18期

关键词：

D O I：

10.1088/0264-9381/25/18/184015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In the hierarchical search for periodic sources of gravitational waves, the candidate selection, in the incoherent step, can be performed with Hough transform procedures. In this paper we analyze the problem of sensitivity loss due to discretization of the parameters space versus computing cost, comparing the properties of the sky Hough procedure with those of a new frequency Hough, which is based on a transformation from the time-observed frequency plane to the source frequency-spin down plane. Results on simulated peakmaps suggest various advantages in favor of the use of the frequency Hough. The ones which prove to really make the difference are (1) the possibility of enhancing the frequency resolution without relevantly affecting the computing cost. This reduces the digitization effects; (2) the excess of candidates due to local disturbances in some places of the sky map. They do not affect the new analysis because each map is constructed for only one position in the sky.

引用

页数：11

共 9 条

[1] Coincidence analysis between periodic source candidates in C6 and C7 Virgo data [J].

Acernese, F. ;

Amico, P. ;

Alshourbagy, M. ;

Antonucci, F. ;

Aoudia, S. ;

Astone, P. ;

Avino, S. ;

Babusci, D. ;

Ballardin, G. ;

Barone, F. ;

Barsotti, L. ;

Barsuglia, M. ;

Bauer, Th S. ;

Beauville, F. ;

Bigotta, S. ;

Birindelli, S. ;

Bizouard, M. A. ;

Boccara, C. ;

Bondu, F. ;

Bosi, L. ;

Bradaschia, C. ;

Braccini, S. ;

van den Brand, F. J. ;

Brillet, A. ;

Brisson, V. ;

Buskulic, D. ;

Calloni, E. ;

Campagna, E. ;

Carbognani, F. ;

Cavalier, F. ;

Cavalieri, R. ;

Cella, G. ;

Cesarini, E. ;

Chassande-Mottin, E. ;

Christensen, N. ;

Corda, C. ;

Corsi, A. ;

Cottone, F. ;

Clapson, A-C ;

Cleva, F. ;

Coulon, J-P ;

Cuoco, E. ;

Dari, A. ;

Dattilo, V. ;

Davier, M. ;

del Prete, M. ;

De Rosa, R. ;

Di Fiore, L. ;

Di Virgilio, A. ;

Dujardin, B. .

CLASSICAL AND QUANTUM GRAVITY, 2007, 24 (19) :S491-S499

[2]

ACERNESE F, 2008, P 11 MARC GROSSM M G

[3] The short FFT database and the peak map for the hierarchical search of periodic sources [J].

Astone, P ;

Frasca, S ;

Palomba, C .

CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (18) :S1197-S1210

[4]

ASTONE P, 2008, P 11 MARC GROSSM M G

[5] Evaluation of sensitivity and computing power for the Virgo hierarchical search for periodic sources [J].

Frasca, S ;

Astone, P ;

Palomba, C .

CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (18) :S1013-S1019

[6] Spectral filtering for hierarchical search of periodic sources [J].

Frasca, S ;

Palomba, C .

CLASSICAL AND QUANTUM GRAVITY, 2004, 21 (20) :S1645-S1654

[7] Hough transform search for continuous gravitational waves [J].

Krishnan, B ;

Sintes, AM ;

Papa, MA ;

Schutz, BF ;

Frasca, S ;

Palomba, C .

PHYSICAL REVIEW D, 2004, 70 (08)

[8] Adaptive Hough transform for the search of periodic sources [J].

Palomba, C ;

Astone, P ;

Frasca, S .

CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (18) :S1255-S1264

[9] Improved Hough search for gravitational wave pulsars [J].

Sintes, Alicia M. ;

Krishnan, Badri .

SIXTH EDOARDO AMALDI CONFERENCE ON GRAVITATIONAL WAVES, 2006, 32

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