All-sky search for periodic gravitational waves in LIGO S4 data

被引：111

作者：

Abbott, B. ^{[15
]}

Abbott, R. ^{[15
]}

Adhikari, R. ^{[15
]}

Agresti, J. ^{[15
]}

Ajith, P. ^{[2
]}

Allen, B. ^{[2
]}

Amin, R. ^{[19
]}

Anderson, S. B. ^{[15
]}

Anderson, W. G. ^{[50
]}

Arain, M. ^{[39
]}

Araya, M. ^{[15
]}

Armandula, H. ^{[15
]}

Ashley, M. ^{[4
]}

Aston, S. ^{[38
]}

Aufmuth, P. ^{[14
]}

Aulbert, C. ^{[1
]}

Babak, S. ^{[1
]}

Ballmer, S. ^{[15
]}

Bantilan, H. ^{[8
]}

Barish, B. C. ^{[15
]}

Barker, C. ^{[16
]}

Barker, D. ^{[16
]}

Barr, B. ^{[40
]}

Barriga, P. ^{[49
]}

Barton, M. A. ^{[40
]}

Bayer, K. ^{[18
]}

Belczynski, K. ^{[25
]}

Betzwieser, J. ^{[18
]}

Beyersdorf, P. T. ^{[28
]}

Bhawal, B. ^{[15
]}

Bilenko, I. A. ^{[22
]}

Billingsley, G. ^{[15
]}

Biswas, R. ^{[50
]}

Black, E. ^{[15
]}

Blackburn, K. ^{[15
]}

Blackburn, L. ^{[18
]}

Blair, D. ^{[49
]}

Bland, B. ^{[16
]}

Bogenstahl, J. ^{[40
]}

Bogue, L. ^{[17
]}

Bork, R. ^{[15
]}

Boschi, V. ^{[15
]}

Bose, S. ^{[51
]}

Brady, P. R. ^{[50
]}

Braginsky, V. B. ^{[22
]}

Brau, J. E. ^{[43
]}

Brinkmann, M. ^{[2
]}

Brooks, A. ^{[37
]}

Brown, D. A. ^{[6
,15
]}

Bullington, A. ^{[31
]}

机构：

[1] Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-14476 Golm, Germany

[2] Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-30167 Hannover, Germany

[3] Andrews Univ, Berrien Springs, MI 49104 USA

[4] Australian Natl Univ, Canberra, ACT 0200, Australia

[5] CALTECH, Pasadena, CA 91125 USA

[6] Caltech CaRT, Pasadena, CA 91125 USA

[7] Cardiff Univ, Cardiff CF24 3AA, Wales

[8] Carleton Coll, Northfield, MN 55057 USA

[9] Charles Sturt Univ, Wagga Wagga, NSW 2678, Australia

[10] Columbia Univ, New York, NY 10027 USA

[11] Embry Riddle Aeronaut Univ, Prescott, AZ 86301 USA

[12] Hobart & William Smith Coll, Geneva, NY 14456 USA

[13] Interuniv Ctr Astron & Astrophys, Pune 411007, Maharashtra, India

[14] Leibnitz Univ Hannover, D-30167 Hannover, Germany

[15] CALTECH, LIGO, Pasadena, CA 91125 USA

[16] LIGO Hanford Observ, Richland, WA 99352 USA

[17] LIGO Livingston Observ, Livingston, LA 70754 USA

[18] MIT, LIGO, Cambridge, MA 02139 USA

[19] Louisiana State Univ, Baton Rouge, LA 70803 USA

[20] Louisiana Tech Univ, Ruston, LA 71272 USA

[21] Loyola Univ, New Orleans, LA 70118 USA

[22] Moscow MV Lomonosov State Univ, Moscow 119992, Russia

[23] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[24] Natl Astron Observ Japan, Tokyo 1818588, Japan

[25] Northwestern Univ, Evanston, IL 60208 USA

[26] Rochester Inst Technol, Rochester, NY 14623 USA

[27] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[28] San Jose State Univ, San Jose, CA 95192 USA

[29] SE Louisiana Univ, Hammond, LA 70402 USA

[30] So Univ & A&M Coll, Baton Rouge, LA 70813 USA

[31] Stanford Univ, Stanford, CA 94305 USA

[32] Syracuse Univ, Syracuse, NY 13244 USA

[33] Penn State Univ, University Pk, PA 16802 USA

[34] Univ Texas Brownsville & Texas Southmost Coll, Brownsville, TX 78520 USA

[35] Trinity Univ, San Antonio, TX 78212 USA

[36] Univ Illes Balears, E-07122 Palma de Mallorca, Spain

[37] Univ Adelaide, Adelaide, SA 5005, Australia

[38] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[39] Univ Florida, Gainesville, FL 32611 USA

[40] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[41] Univ Maryland, College Pk, MD 20742 USA

[42] Univ Michigan, Ann Arbor, MI 48109 USA

[43] Univ Oregon, Eugene, OR 97403 USA

[44] Univ Rochester, Rochester, NY 14627 USA

[45] Univ Salerno, I-84084 Salerno, Italy

[46] Univ Sannio Benevento, I-82100 Benevento, Italy

[47] Univ Southampton, Southampton SO17 1BJ, Hants, England

[48] Univ Strathclyde, Glasgow G1 1XQ, Lanark, Scotland

[49] Univ Western Australia, Perth, WA 6009, Australia

[50] Univ Wisconsin, Milwaukee, WI 53201 USA

来源：

PHYSICAL REVIEW D | 2008年 / 77卷 / 02期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.77.022001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on an all-sky search with the LIGO detectors for periodic gravitational waves in the frequency range 50-1000 Hz and with the frequency's time derivative in the range -1 x 10(-8) Hz s(-1) to zero. Data from the fourth LIGO science run (S4) have been used in this search. Three different semicoherent methods of transforming and summing strain power from short Fourier transforms (SFTs) of the calibrated data have been used. The first, known as StackSlide, averages normalized power from each SFT. A "weighted Hough" scheme is also developed and used, which also allows for a multi-interferometer search. The third method, known as PowerFlux, is a variant of the StackSlide method in which the power is weighted before summing. In both the weighted Hough and PowerFlux methods, the weights are chosen according to the noise and detector antenna-pattern to maximize the signal-to-noise ratio. The respective advantages and disadvantages of these methods are discussed. Observing no evidence of periodic gravitational radiation, we report upper limits; we interpret these as limits on this radiation from isolated rotating neutron stars. The best population-based upper limit with 95% confidence on the gravitational-wave strain amplitude, found for simulated sources distributed isotropically across the sky and with isotropically distributed spin axes, is 4.28 x 10(-24) (near 140 Hz). Strict upper limits are also obtained for small patches on the sky for best-case and worst-case inclinations of the spin axes.

引用

页数：38

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