The double neutron star PSR J1946+2052 I. Masses and tests of general relativity
文献类型：期刊论文
| 作者 | Meng, Lingqi18,19,20; Freire, Paulo C. C.19; Stovall, Kevin17; Wex, Norbert19; Miao, Xueli19,20; Zhu, Weiwei16,20; Kramer, Michael15,19; Cordes, James M.13,14; Hu, Huanchen19; Jiang, Jinchen19 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 704页码:A153 |
| 关键词 | gravitation relativistic processes pulsars: individual: PSR J1946+2052 |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202555689 |
| 产权排序 | 19 |
| 英文摘要 | Aims. Double neutron star (DNS) systems are superb laboratories for testing theories of gravity and constraining the equation of state of ultra-dense matter. PSR J1946+2052 is a particularly intriguing DNS system due to its orbital period (1h 53 m), as it is the shortest among all DNS systems known in our Galaxy. Methods. We aim to conduct high-precision timing of PSR J1946+2052 to determine the masses of the two neutron stars in the system, test general relativity (GR), and assess the system's potential for future measurement of the moment of inertia of the pulsar. Results. We analysed seven years of timing data from the Arecibo 305-m radio telescope, the Green Bank Telescope, and the Five-hundred-meter Aperture Spherical radio Telescope. The data processing accounted for dispersion measure variations and relativistic spin precession-induced profile evolution. We employed both theory-independent (DDFWHE) and GR-dependent (DDGR) binary models to measure the spin parameters, kinematic parameters, and orbital parameters. Results. The timing campaign resulted in the precise measurement of five post-Keplerian parameters, which yield very precise masses for the system (total mass M = 2.531858(60) M-circle dot, companion mass M-c = 1.2480(21) M-circle dot, and pulsar mass M-p = 1.2838(21) M-circle dot), and three tests of GR. One of these tests is the second-most precise test of the radiative properties of gravity to date. The intrinsic orbital decay, P-b,P-int = -1.8288(16) x 10(-12), s s(-1), represents 1.00005(91) of the GR prediction, indicating that the theory has passed this stringent test. The other two tests of the Shapiro delay parameters have precisions of 6% and 5%, respectively. This is caused by the moderate orbital inclination of the system, similar to 74 degrees. The measurements of the Shapiro delay parameters also agree with the GR predictions. Additionally, we analysed the higher-order contributions of omega(center dot), including the Lense-Thirring contribution. Both the second post-Newtonian and the Lense-Thirring contributions are larger than the current uncertainty of omega(center dot)( delta omega(center dot) = 4 x 10(-4) deg yr(-1)), leading to the higher-order correction for the total mass. |
| WOS关键词 | BINARY-SYSTEMS ; PULSAR SURVEY ; CELESTIAL MECHANICS ; SPIN PRECESSION ; GRAVITY ; DISCOVERY ; PLANETARY ; EMISSION ; SOLAR |
| 资助项目 | National Natural Science Foundation of China[12041303] ; National Natural Science Foundation of China[12421003] ; National Natural Science Foundation of China[12203072] ; National Natural Science Foundation of China[12203070] ; National SKA Program of China[2020SKA0120200] ; National SKA Program of China[2020SKA0120300] ; Beijing Nova Program[20250484786] ; CAS-MPG LEGACY project ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; China Scholarship Council (CSC) ; Juan de la Cierva fellowship[JDC2022-049957-I] ; Max Planck Partner Group Program - Max Planck Society ; NANOGrav Physics Frontiers Center (NSF)[2020265] ; National Natural Science Foundation of China (NSFC)[12503055] ; Postdoctoral Fellowship Program of CPSF[GZB20250737] ; National Science Foundation of Xinjiang Uygur Autonomous Region[2022D01D85] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-2] ; CAS Project for Young Scientists in Basic Research[YSBR-063] ; CAS Project for Young Scientists in Basic Research[2023TSYCTD0013] ; Chinese Academy of Sciences (CAS) Light of West China Program[xbzg-zdsys-202410] ; Chinese Academy of Sciences (CAS) Light of West China Program[2022-XBQNXZ-015] ; Chinese Academy of Sciences ; National Science Foundation (NSF)[AST-1100968] ; NSF |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001633255500004 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | National Natural Science Foundation of China ; National SKA Program of China ; Beijing Nova Program ; CAS-MPG LEGACY project ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; China Scholarship Council (CSC) ; Juan de la Cierva fellowship ; Max Planck Partner Group Program - Max Planck Society ; NANOGrav Physics Frontiers Center (NSF) ; National Natural Science Foundation of China (NSFC) ; Postdoctoral Fellowship Program of CPSF ; National Science Foundation of Xinjiang Uygur Autonomous Region ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; CAS Project for Young Scientists in Basic Research ; Chinese Academy of Sciences (CAS) Light of West China Program ; Chinese Academy of Sciences ; National Science Foundation (NSF) ; NSF |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8438]  |
| 专题 | 脉冲星研究团组 |
| 通讯作者 | Meng, Lingqi; Zhu, Weiwei |
| 作者单位 | 1.Qilu Normal Univ, Coll Phys & Elect Engn, 2 Wenbo Rd, Jinan, Peoples R China 2.West Virginia Univ, Ctr Gravitat Waves & Cosmol, Morgantown, WV 26506 USA 3.West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA 4.Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands 5.Netherlands Inst Radio Astron, ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands 6.Franklin & Marshall Coll, Dept Phys & Astron, POB 3003, Lancaster, PA 17604 USA 7.South African Radio Astron Observ, River Pk,Liesbeek House, ZA-7700 Cape Town, South Africa 8.Cornell Univ, Cornell Ctr Adv Comp, Ithaca, NY 14853 USA 9.Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada 10.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Lingqi,Freire, Paulo C. C.,Stovall, Kevin,et al. The double neutron star PSR J1946+2052 I. Masses and tests of general relativity[J]. ASTRONOMY & ASTROPHYSICS,2025,704:A153. |
| APA | Meng, Lingqi.,Freire, Paulo C. C..,Stovall, Kevin.,Wex, Norbert.,Miao, Xueli.,...&Zhang, Chengmin.(2025).The double neutron star PSR J1946+2052 I. Masses and tests of general relativity.ASTRONOMY & ASTROPHYSICS,704,A153. |
| MLA | Meng, Lingqi,et al."The double neutron star PSR J1946+2052 I. Masses and tests of general relativity".ASTRONOMY & ASTROPHYSICS 704(2025):A153. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。