The nearest neutron star candidate in a binary revealed by optical time-domain surveys

doi:10.1007/s11433-023-2247-x

	The nearest neutron star candidate in a binary revealed by optical time-domain surveys
	Zheng, Ling-Lin 5; Sun, Mouyuan 5; Gu, Wei-Min 5; Yi, Tuan 5; Zhang, Zhi-Xiang 5; Wang, Pei 6,7; Wang, Junfeng 5; Wu, Jianfeng 5; Weng, Shan-Shan 8; Wang, Song 6
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2023-12
卷号	66 期号:12
关键词	neutron stars binary stars stellar evolution
ISSN号	1674-7348
DOI	10.1007/s11433-023-2247-x
产权排序	第5完成单位
文献子类	Article
英文摘要	The near-Earth (within similar to 100 pc) supernova explosions in the past several million years can cause the global deposition of radioactive elements (e.g., 60Fe) on Earth. The remnants of such supernovae are too old to be easily identified. It is therefore of great interest to search for million-year-old near-Earth neutron stars or black holes, the products of supernovae. However, neutron stars and black holes are challenging to find even in our Solar neighbourhood if they are not radio pulsars or X-ray/gamma-ray emitters. Here we report the discovery of one of the nearest (127.7 +/- 0.3 pc) neutron star candidates in a detached single-lined spectroscopic binary LAMOST J235456.73+335625.9 (hereafter J2354). Utilizing the time-resolved ground-based spectroscopy and space photometry, we find that J2354 hosts an unseen compact object with Minv being 1.4-1.6 M circle dot. The follow-up Swift ultraviolet (UV) and X-ray observations suggest that the UV and X-ray emission is produced by the visible star rather than the compact object. Hence, J2354 probably harbours a neutron star rather than a hot ultramassive white dwarf. Two-hour exceptionally sensitive radio follow-up observations with Five-hundred-meter Aperture Spherical radio Telescope fail to reveal any pulsating radio signals at the 6 sigma flux upper limit of 12.5 mu Jy. Therefore, the neutron star candidate in J2354 can only be revealed via our time-resolved observations. Interestingly, the distance between J2354 and our Earth can be as close as similar to 50 pc around 2.5 million years (Myrs) ago, as revealed by the Gaia kinematics. Our discovery demonstrates a promising way to unveil the hidden near-Earth neutron stars in binaries by exploring the optical time domain, thereby facilitating understanding of the metal-enrichment history in our Solar neighbourhood.
学科主题	天文学
URL标识	查看原文
出版地	16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
资助项目	National Key R&D Program of China[2021YFA1600401]; National Natural Science Foundation of China (NSFC)[11925301]; National Natural Science Foundation of China (NSFC)[12033006]; National Natural Science Foundation of China (NSFC)[11973002]; National Natural Science Foundation of China (NSFC)[12322303]; National Natural Science Foundation of China (NSFC)[12103041]; National Natural Science Foundation of China (NSFC)[11988101]; National Natural Science Foundation of China (NSFC)[11933004]; National Natural Science Foundation of China (NSFC)[U2031117]; National Natural Science Foundation of China (NSFC)[12033004]; National Natural Science Foundation of China (NSFC)[12273029]; National Natural Science Foundation of China (NSFC)[12221003]; National Natural Science Foundation of China (NSFC)[11933008]; National Natural Science Foundation of China (NSFC)[12090044]; National Natural Science Foundation of China (NSFC)[12041301]; National Natural Science Foundation of China (NSFC)[12121003]; NSFC[11973002]; NSFC[12322303]; NSFC[12103041]; NSFC[11988101]; NSFC[11933004]; NSFC[U2031117]; NSFC[12033004]; NSFC[12273029]; NSFC[12221003]; NSFC[11933008]; NSFC[12090044]; NSFC[12041301]; NSFC[12121003]; National Development and Reform Commission
WOS关键词	BLACK-HOLE BINARIES ; X-RAY ; WHITE-DWARFS ; LOCAL BUBBLE ; PULSAR ; MODEL ; SYSTEM ; GAIA ; I. ; METALLICITIES
WOS研究方向	Physics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:001109186700004
资助机构	National Key R&D Program of China[2021YFA1600401] ; National Natural Science Foundation of China (NSFC)[11925301, 12033006, 11973002, 12322303, 12103041, 11988101, 11933004, U2031117, 12033004, 12273029, 12221003, 11933008, 12090044, 12041301, 12121003] ; NSFC[11973002, 12322303, 12103041, 11988101, 11933004, U2031117, 12033004, 12273029, 12221003, 11933008, 12090044, 12041301, 12121003] ; National Development and Reform Commission
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/26510]
专题	云南天文台_双星与变星研究组
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China; 2.College of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 100049, China; 3.School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China; 4.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Nanjing, 210023, China 5.Department of Astronomy, Xiamen University, Xiamen, 361005, China; 6.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China; 7.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing, 102206, China; 8.Department of Physics, Institute of Theoretical Physics, Nanjing Normal University, Nanjing, 210023, China;
推荐引用方式 GB/T 7714	Zheng, Ling-Lin,Sun, Mouyuan,Gu, Wei-Min,et al. The nearest neutron star candidate in a binary revealed by optical time-domain surveys[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2023,66(12).
APA	Zheng, Ling-Lin.,Sun, Mouyuan.,Gu, Wei-Min.,Yi, Tuan.,Zhang, Zhi-Xiang.,...&Liu, Jifeng.(2023).The nearest neutron star candidate in a binary revealed by optical time-domain surveys.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,66(12).
MLA	Zheng, Ling-Lin,et al."The nearest neutron star candidate in a binary revealed by optical time-domain surveys".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 66.12(2023).