Iterative time-domain method for resolving multiple gravitational wave sources in pulsar timing array data

被引：5

作者：

Qian, Yi-Qian ^{[1
,2
]}

Mohanty, Soumya D. ^{[3
]}

Wang, Yan ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, MOE Key Lab Fundamental Phys Quant Measurements, Hubei Key Lab Gravitat & Quantum Phys, PGMF,Dept Astron, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

[3] Univ Texas Rio Grande Valley, Dept Phys & Astron, One West Univ Blvd, Brownsville, TX 78520 USA

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 02期

基金：

中国国家自然科学基金;

关键词：

BINARY; LIMITS; MODEL; SEARCH;

D O I：

10.1103/PhysRevD.106.023016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The sensitivity of ongoing searches for gravitational wave (GW) sources in the ultra-low-frequency regime (10(-9) Hz to 10(-7) Hz) using pulsar timing arrays (PTAs) will continue to increase in the future as more well-timed pulsars are added to the arrays. It is expected that next-generation radio telescopes, namely, the Five-Hundred-Meter Aperture Spherical Radio Telescope (FAST) and the Square Kilometer Array (SKA), will grow the number of well-timed pulsars to O(10(3)). The higher sensitivity will result in greater distance reach for GW sources, uncovering multiple resolvable GW sources in addition to an unresolved population. Data analysis techniques that can search for and resolve multiple signals present simultaneously in PTA data are, therefore, required. The multisource resolution problem in PTA data analysis poses a unique set of challenges such as nonuniformly sampled data, a large number of so-called pulsar phase parameters that arise from the inaccurately measured distances to the pulsars, and poor separation of signals in the Fourier domain due to a small number of cycles in the observed waveforms. We present a method that can address these challenges and demonstrate its performance on simulated data from PTAs with 10(2) to 10(3) pulsars. The method estimates and subtracts sources from the data iteratively using multiple stages of refinement, followed by a step that mitigates spurious identified sources by comparing the outputs from two different algorithms. The performance of the method compares favorably with the global fit approaches that have been proposed so far. In all the cases tested in this work, the fraction of sources found by the method that correspond to true sources in the simulated data exceeds 78% and 93% for a large-scale (with 10(3) pulsars and 200 sources) and a midscale (with 10(2) pulsars and 100 sources) PTA, respectively. The network signal-to-noise ratio of the recovered true sources reaches down to 16.43 for the large-scale and 9.07 for the midscale PTA.

引用

页数：18

共 75 条

[1] Observation of Gravitational Waves from a Binary Black Hole Merger [J].

Abbott, B. P. ;

Abbott, R. ;

Abbott, T. D. ;

Abernathy, M. R. ;

Acernese, F. ;

Ackley, K. ;

Adams, C. ;

Adams, T. ;

Addesso, P. ;

Adhikari, R. X. ;

Adya, V. B. ;

Affeldt, C. ;

Agathos, M. ;

Agatsuma, K. ;

Aggarwal, N. ;

Aguiar, O. D. ;

Aiello, L. ;

Ain, A. ;

Ajith, P. ;

Allen, B. ;

Allocca, A. ;

Altin, P. A. ;

Anderson, S. B. ;

Anderson, W. G. ;

Arai, K. ;

Arain, M. A. ;

Araya, M. C. ;

Arceneaux, C. C. ;

Areeda, J. S. ;

Arnaud, N. ;

Arun, K. G. ;

Ascenzi, S. ;

Ashton, G. ;

Ast, M. ;

Aston, S. M. ;

Astone, P. ;

Aufmuth, P. ;

Aulbert, C. ;

Babak, S. ;

Bacon, P. ;

Bader, M. K. M. ;

Baker, P. T. ;

Baldaccini, F. ;

Ballardin, G. ;

Ballmer, S. W. ;

Barayoga, J. C. ;

Barclay, S. E. ;

Barish, B. C. ;

Barker, D. ;

Barone, F. .

PHYSICAL REVIEW LETTERS, 2016, 116 (06)

[2] GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs [J].

Abbott, B. P. ;

Abbott, R. ;

Abbott, T. D. ;

Abraham, S. ;

Acernese, F. ;

Ackley, K. ;

Adams, C. ;

Adhikari, R. X. ;

Adya, V. B. ;

Affeldt, C. ;

Agathos, M. ;

Agatsuma, K. ;

Aggarwal, N. ;

Aguiar, O. D. ;

Aiello, L. ;

Ain, A. ;

Ajith, P. ;

Allen, G. ;

Allocca, A. ;

Aloy, M. A. ;

Altin, P. A. ;

Amato, A. ;

Ananyeva, A. ;

Anderson, S. B. ;

Anderson, W. G. ;

Angelova, S., V ;

Antier, S. ;

Appert, S. ;

Arai, K. ;

Araya, M. C. ;

Areeda, J. S. ;

Arene, M. ;

Arnaud, N. ;

Arun, K. G. ;

Ascenzi, S. ;

Ashton, G. ;

Aston, S. M. ;

Astone, P. ;

Aubin, F. ;

Aufmuth, P. ;

AultONeal, K. ;

Austin, C. ;

Avendano, V ;

Avila-Alvarez, A. ;

Babak, S. ;

Bacon, P. ;

Badaracco, F. ;

Bader, M. K. M. ;

Bae, S. ;

Baker, P. T. .

PHYSICAL REVIEW X, 2019, 9 (03)

[3]

Abbott R., 2021, PHYS REV X, V11, DOI DOI 10.1103/PHYSREVX.11.021053

[4] The NANOGrav 11 yr Data Set: Limits on Gravitational Wave Memory [J].

Aggarwal, K. ;

Arzoumanian, Z. ;

Baker, P. T. ;

Brazier, A. ;

Brook, P. R. ;

Burke-Spolaor, S. ;

Chatterjee, S. ;

Cordes, J. M. ;

Cornish, N. J. ;

Crawford, F. ;

Cromartie, H. T. ;

Crowter, K. ;

Decesar, M. ;

Demorest, P. B. ;

Dolch, T. ;

Ellis, J. A. ;

Ferdman, R. D. ;

Ferrara, E. C. ;

Fonseca, E. ;

Garver-Daniels, N. ;

Gentile, P. ;

Good, D. ;

Hazboun, J. S. ;

Holgado, A. M. ;

Huerta, E. A. ;

Islo, K. ;

Jennings, R. ;

Jones, G. ;

Jones, M. L. ;

Kaplan, D. L. ;

Kelley, L. Z. ;

Key, J. S. ;

Lam, M. T. ;

Lazio, T. J. W. ;

Levin, L. ;

Lorimer, D. R. ;

Luo, J. ;

Lynch, R. S. ;

Madison, D. R. ;

McLaughlin, M. A. ;

McWilliams, S. T. ;

Mingarelli, C. M. F. ;

Ng, C. ;

Nice, D. J. ;

Pennucci, T. T. ;

Pol, N. S. ;

Ransom, S. M. ;

Ray, P. S. ;

Siemens, X. ;

Simon, J. .

ASTROPHYSICAL JOURNAL, 2020, 889 (01)

[5] The NANOGrav 11 yr Data Set: Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries [J].

Aggarwal, K. ;

Arzoumanian, Z. ;

Baker, P. T. ;

Brazier, A. ;

Brinson, M. R. ;

Brook, P. R. ;

Burke-Spolaor, S. ;

Chatterjee, S. ;

Cordes, M. ;

Cornish, N. J. ;

Crawford, F. ;

Crowter, K. ;

Cromartie, H. T. ;

DeCesar, M. ;

Demorest, P. B. ;

Dolch, T. ;

Ellis, J. A. ;

Ferdman, R. D. ;

Ferrara, E. ;

Fonseca, E. ;

Garver-Daniels, N. ;

Gentile, P. ;

Hazboun, J. S. ;

Holgado, A. M. ;

Huerta, E. A. ;

Islo, K. ;

Jennings, R. ;

Jones, G. ;

Jones, M. L. ;

Kaiser, A. R. ;

Kaplan, D. L. ;

Kelley, L. Z. ;

Keys, J. S. ;

Lam, M. T. ;

Lazio, T. J. W. ;

Levin, L. ;

Lorimer, D. R. ;

Luo, J. ;

Lynch, R. S. ;

Madison, D. R. ;

McLaughlin, M. A. ;

McWilliams, S. T. ;

Mingarelli, C. M. F. ;

Ng, C. ;

Nice, D. J. ;

Pennucci, T. T. ;

Pol, N. S. ;

Ransom, S. M. ;

Ray, P. S. ;

Siemens, X. .

ASTROPHYSICAL JOURNAL, 2019, 880 (02)

[6] The NANOGrav 12.5 yr Data Set: Observations and Narrowband Timing of 47 Millisecond Pulsars [J].

Alam, Md F. ;

Arzoumanian, Zaven ;

Baker, Paul T. ;

Blumer, Harsha ;

Bohler, Keith E. ;

Brazier, Adam ;

Brook, Paul R. ;

Burke-Spolaor, Sarah ;

Caballero, Keeisi ;

Camuccio, Richard S. ;

Chamberlain, Rachel L. ;

Chatterjee, Shami ;

Cordes, James M. ;

Cornish, Neil J. ;

Crawford, Fronefield ;

Cromartie, H. Thankful ;

DeCesar, Megan E. ;

Demorest, Paul B. ;

Dolch, Timothy ;

Ellis, Justin A. ;

Ferdman, Robert D. ;

Ferrara, Elizabeth C. ;

Fiore, William ;

Fonseca, Emmanuel ;

Garcia, Yhamil ;

Garver-Daniels, Nathan ;

Gentile, Peter A. ;

Good, Deborah C. ;

Gusdorff, Jordan A. ;

Halmrast, Daniel ;

Hazboun, Jeffrey S. ;

Islo, Kristina ;

Jennings, Ross J. ;

Jessup, Cody ;

Jones, Megan L. ;

Kaiser, Andrew R. ;

Kaplan, David L. ;

Kelley, Luke Zoltan ;

Key, Joey Shapiro ;

Lam, Michael T. ;

Lazio, T. Joseph W. ;

Lorimer, Duncan R. ;

Luo, Jing ;

Lynch, Ryan S. ;

Madison, Dustin R. ;

Maraccini, Kaleb ;

McLaughlin, Maura A. ;

Mingarelli, Chiara M. F. ;

Ng, Cherry ;

Nguyen, Benjamin M. X. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2021, 252 (01)

[7] The NANOGrav 12.5 yr Data Set: Wideband Timing of 47 Millisecond Pulsars [J].

Alam, Md F. ;

Arzoumanian, Zaven ;

Baker, Paul T. ;

Blumer, Harsha ;

Bohler, Keith E. ;

Brazier, Adam ;

Brook, Paul R. ;

Burke-Spolaor, Sarah ;

Caballero, Keeisi ;

Camuccio, Richard S. ;

Chamberlain, Rachel L. ;

Chatterjee, Shami ;

Cordes, James M. ;

Cornish, Neil J. ;

Crawford, Fronefield ;

Cromartie, H. Thankful ;

DeCesar, Megan E. ;

Demorest, Paul B. ;

Dolch, Timothy ;

Ellis, Justin A. ;

Ferdman, Robert D. ;

Ferrara, Elizabeth C. ;

Fiore, William ;

Fonseca, Emmanuel ;

Garcia, Yhamil ;

Garver-Daniels, Nathan ;

Gentile, Peter A. ;

Good, Deborah C. ;

Gusdorff, Jordan A. ;

Halmrast, Daniel ;

Hazboun, Jeffrey S. ;

Islo, Kristina ;

Jennings, Ross J. ;

Jessup, Cody ;

Jones, Megan L. ;

Kaiser, Andrew R. ;

Kaplan, David L. ;

Kelley, Luke Zoltan ;

Key, Joey Shapiro ;

Lam, Michael T. ;

Lazio, T. Joseph W. ;

Lorimer, Duncan R. ;

Luo, Jing ;

Lynch, Ryan S. ;

Madison, Dustin R. ;

Maraccini, Kaleb ;

McLaughlin, Maura A. ;

Mingarelli, Chiara M. F. ;

Ng, Cherry ;

Nguyen, Benjamin M. X. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2021, 252 (01)

[8]

Amaro-Seoane P, 2017, Arxiv, DOI arXiv:1702.00786

[9]

[Anonymous], TACC UTEXAS ED

[10] The International Pulsar Timing Array second data release: Search for an isotropic gravitational wave background [J].

Antoniadis, J. ;

Arzoumanian, Z. ;

Babak, S. ;

Bailes, M. ;

Nielsen, A-S Bak ;

Baker, P. T. ;

Bassa, C. G. ;

Becsy, B. ;

Berthereau, A. ;

Bonetti, M. ;

Brazier, A. ;

Brook, P. R. ;

Burgay, M. ;

Burke-Spolaor, S. ;

Caballero, R. N. ;

Casey-Clyde, J. A. ;

Chalumeau, A. ;

Champion, D. J. ;

Charisi, M. ;

Chatterjee, S. ;

Chen, S. ;

Cognard, I ;

Cordes, J. M. ;

Cornish, N. J. ;

Crawford, F. ;

Cromartie, H. T. ;

Crowter, K. ;

Dai, S. ;

DeCesar, M. E. ;

Demorest, P. B. ;

Desvignes, G. ;

Dolch, T. ;

Drachler, B. ;

Falxa, M. ;

Ferrara, E. C. ;

Fiore, W. ;

Fonseca, E. ;

Gair, J. R. ;

Garver-Daniels, N. ;

Goncharov, B. ;

Good, D. C. ;

Graikou, E. ;

Guillemot, L. ;

Guo, Y. J. ;

Hazboun, J. S. ;

Hobbs, G. ;

Hu, H. ;

Islo, K. ;

Janssen, G. H. ;

Jennings, R. J. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 510 (04) :4873-4887

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