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Implications of PSR J0737-3039B for the Galactic NS-NS binary merger rate

Title
Implications of PSR J0737-3039B for the Galactic NS-NS binary merger rate
Authors
Kim, ChungleePerera, Benetge Bhakthi PranamaMcLaughlin, Maura A.
Ewha Authors
김정리
SCOPUS Author ID
김정리scopus
Issue Date
2015
Journal Title
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN
0035-8711JCR Link

1365-2966JCR Link
Citation
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY vol. 448, no. 1, pp. 928 - 938
Keywords
gravitational wavesmethods: statisticalbinaries: closepulsars: individual
Publisher
OXFORD UNIV PRESS
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
The Double Pulsar (PSR J0737-3039) is the only neutron star-neutron star (NS-NS) binary in which both NSs have been detectable as radio pulsars. The Double Pulsar has been assumed to dominate the Galactic NS-NS binary merger rate R-g among all known systems, solely based on the properties of the first-born, recycled pulsar (PSR J0737-3039A, or A) with an assumption for the beaming correction factor of 6. In this work, we carefully correct observational biases for the second-born, non-recycled pulsar (PSR J0737-0737B, or B) and estimate the contribution from the Double Pulsar on R-g using constraints available from both A and B. Observational constraints from the B pulsar favour a small beaming correction factor for A (similar to 2), which is consistent with a bipolar model. Considering known NS-NS binaries with the best observational constraints, including both A and B, we obtain R-g = 21(-14)(+28) Myr(-1) at 95 per cent confidence from our reference model. We expect the detection rate of gravitational waves from NS-NS inspirals for the advanced ground-based gravitational-wave detectors is to be 8(-5)(+10) yr(-1) at 95 per cent confidence. Within several years, gravitational-wave detections relevant to NS-NS inspirals will provide us useful information to improve pulsar population models.
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DOI
10.1093/mnras/stu2729
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자연과학대학 > 물리학전공 > Journal papers
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