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Detectability of Ultra-compact X-Ray Binaries as LISA Sources
Chen, Wen-Cong1,2; Liu DD(刘栋栋)3; Wang B(王博)3
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2020-09-01
Volume900Issue:1Pages:9
DOI10.3847/2041-8213/abae66
Contribution Rank第3完成单位
Indexed BySCI
KeywordGravitational wave sources Gravitational waves X-ray binary stars Compact binary stars Stellar evolution
Abstract

Ultra-compact X-ray binaries (UCXBs) are low-mass X-ray binaries with ultra-short orbital periods (usually less than 1 hr) and hydrogen-poor donor stars, which are proposed to be potential Laser Interferometer Space Antenna (LISA) sources. In this work, we first employ the Modules for Experiments in Stellar Astrophysics code to examine the parameter space of the progenitors of UCXBs that LISA will detect. Our simulations indicate that the initial binaries with a neutron star and a 0.4-3.5 M-circle dot companion star, in an orbit of initial orbital period smaller than the bifurcation period, could evolve into UCXBs, some of which will emit gravitational wave signals that can be detectable by LISA. However, the initial orbital periods of the binaries that will evolve into UCXB-LISA sources in a distance of 10 kpc are located in a very narrow range, i.e., the formation of these LISA source requires an extreme fine-tuning of initial parameter. According to the characteristic strains and the derived maximum detectable distances, four sources among eight UCXBs with the observed distances are expected to be detected by LISA. Based on the parameter space given by the detailed binary evolution models and the rapid binary star evolution code, the birthrate of UCXBs appearing as LISA sources in the Galaxy is estimated to be (2-2.6) x 10(-6) yr(-1). Considering the contribution of UCXBs in globular clusters, the number of UCXB-LISA sources can reach 240-320. Although the formation condition is severe, the detectability of UCXBs by LISA is still significant because it provides an opportunity to pursue full multi-messenger investigations.

Funding ProjectNational Natural Science Foundation of China[11873085] ; National Natural Science Foundation of China[11673059] ; National Natural Science Foundation of China[11521303] ; National Natural Science Foundation of China[11573016] ; National Natural Science Foundation of China[11733009] ; National Natural Science Foundation of China[11903075] ; Program for Innovative Research Team (in Science and Technology) at the University of Henan Province ; Western Light Youth Project of Chinese Academy of Sciences ; Chinese Academy of Sciences[QYZDB-SSW-SYS001] ; Yunnan Province[2018FB005] ; Yunnan Province[2019FJ001]
Funding OrganizationNational Natural Science Foundation of China[11873085, 11673059, 11521303, 11573016, 11733009, 11903075] ; Program for Innovative Research Team (in Science and Technology) at the University of Henan Province ; Western Light Youth Project of Chinese Academy of Sciences ; Chinese Academy of Sciences[QYZDB-SSW-SYS001] ; Yunnan Province[2018FB005, 2019FJ001]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星形成与演化
MOST Discipline Catalogue理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN2041-8205
URL查看原文
WOS IDWOS:000566216500001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDOUBLE WHITE-DWARFS ; GRAVITATIONAL-WAVE SIGNAL ; LOW-MASS ; GLOBULAR-CLUSTERS ; POPULATION SYNTHESIS ; NEUTRON-STAR ; EVOLUTIONARY STATUS ; STELLAR EVOLUTION ; MAGNETIC BRAKING ; 4U 1820-30
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/23707
Collection大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorChen, Wen-Cong
Affiliation1.School of Science, Qingdao University of Technology, Qingdao 266525, People's Republic of China
2.School of Physics and Electrical Information, Shangqiu Normal University, Shangqiu 476000, People's Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
Recommended Citation
GB/T 7714
Chen, Wen-Cong,Liu DD,Wang B. Detectability of Ultra-compact X-Ray Binaries as LISA Sources[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,900(1):9.
APA Chen, Wen-Cong,Liu DD,&Wang B.(2020).Detectability of Ultra-compact X-Ray Binaries as LISA Sources.ASTROPHYSICAL JOURNAL LETTERS,900(1),9.
MLA Chen, Wen-Cong,et al."Detectability of Ultra-compact X-Ray Binaries as LISA Sources".ASTROPHYSICAL JOURNAL LETTERS 900.1(2020):9.
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