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Validating continuous gravitational-wave candidates from a semicoherent search using Doppler modulation and an effective point spread function

Jones, Dana and Sun, Ling and Carlin, Julian and Dunn, Liam and Millhouse, Meg and Middleton, Hannah and Meyers, Patrick and Clearwater, Patrick and Beniwal, Deeksha and Strang, Lucy and Vargas, Andrés and Melatos, Andrew (2022) Validating continuous gravitational-wave candidates from a semicoherent search using Doppler modulation and an effective point spread function. Physical Review D, 106 (12). Art. No. 123011. ISSN 2470-0010. doi:10.1103/physrevd.106.123011.

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Following up large numbers of candidates in continuous gravitational-wave searches presents a challenge, particularly in regard to computational power and the time required to manually scrutinize each of the candidates. It is important to design and test good follow-up procedures that are safe (i.e., minimize false dismissals) and computationally efficient across many search configurations. We investigate two follow-up procedures, or “vetoes,” both of which exploit the Doppler modulation predicted in astrophysical signals. In particular, we introduce the concept of using an effective point spread function as part of our veto criteria. We take advantage of a well-established semicoherent search algorithm based on a hidden Markov model to study various search configurations and to generalize the veto criteria by considering the overall veto performance in terms of efficiency and safety. The results can serve as a guideline for follow-up studies in future continuous gravitational-wave searches using a hidden Markov model algorithm. The results also apply qualitatively to other semicoherent search algorithms.

Item Type:Article
Related URLs:
URLURL TypeDescription
Jones, Dana0000-0003-3987-068X
Sun, Ling0000-0001-7959-892X
Carlin, Julian0000-0001-5694-0809
Dunn, Liam0000-0002-1769-6097
Millhouse, Meg0000-0002-8659-5898
Middleton, Hannah0000-0001-5532-3622
Meyers, Patrick0000-0002-2689-0190
Clearwater, Patrick0000-0002-0685-6040
Beniwal, Deeksha0000-0002-1652-0663
Strang, Lucy0000-0001-7834-9235
Vargas, Andrés0000-0001-8396-5227
Melatos, Andrew0000-0003-4642-141X
Additional Information:We thank Evan Goetz for the helpful review and suggestions during the LIGO Publications and Presentations (P&P) review procedure. This material is based upon work supported by the U.S. National Science Foundation (NSF)’s LIGO Laboratory, which is a major facility fully funded by NSF. The authors are grateful for computational resources provided by the LIGO Laboratory and supported by NSF Grants No. PHY–0757058 and No. PHY–0823459. The authors acknowledge the support of the Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav), Project No. CE170100004.
Funding AgencyGrant Number
Australian Research CouncilCE170100004
Issue or Number:12
Record Number:CaltechAUTHORS:20230111-282624100.12
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118783
Deposited By: Research Services Depository
Deposited On:09 Feb 2023 17:49
Last Modified:09 Feb 2023 17:49

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