PALFA Discovery of a Highly Relativistic Double Neutron Star Binary
文献类型：期刊论文
| 作者 | Stovall, K.1; Freire, P. C. C.2; Chatterjee, S.3,4; Demorest, P. B.1; Lorimer, D. R.5,6; McLaughlin, M. A.5,6; Pol, N.5,6; van Leeuwen, J.7,8; Wharton, R. S.2,3,4; Allen, B.9,10,11 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2018-02-20 |
| 卷号 | 854期号:2页码:6 |
| ISSN号 | 2041-8205 |
| 关键词 | pulsars: individual (PSR J1946+2052) |
| DOI | 10.3847/2041-8213/aaad06 |
| 英文摘要 | We report the discovery and initial follow-up of a double neutron star (DNS) system, PSR J1946+2052, with the Arecibo L-Band Feed Array pulsar (PALFA) survey. PSR J1946+2052 is a 17 ms pulsar in a 1.88 hr, eccentric (e = 0.06) orbit with a greater than or similar to 1.2 M-circle dot companion. We have used the Jansky Very Large Array to localize PSR J1946+2052 to a precision of 0 ''.09 using a new phase binning mode. We have searched multiwavelength catalogs for coincident sources but did not find any counterparts. The improved position enabled a measurement of the spin period derivative of the pulsar ((P)over dot = 9 +/- 2 x 10(-19)); the small inferred magnetic field strength at the surface (B-S = 4 x 10(9) G) indicates that this pulsar has been recycled. This and the orbital eccentricity lead to the conclusion that PSR J1946+2052 is in a DNS system. Among all known radio pulsars in DNS systems, PSR J1946+2052 has the shortest orbital period and the shortest estimated merger timescale, 46 Myr; at that time it will display the largest spin effects on gravitational-wave waveforms of any such system discovered to date. We have measured the advance of periastron passage for this system, (omega)over dot = 25.6 +/- 0.3 deg yr(-1), implying a total system mass of only 2.50 +/- 0.04 M-circle dot, so it is among the lowest-mass DNS systems. This total mass measurement combined with the minimum companion mass constrains the pulsar mass to less than or similar to 1.3 Me-circle dot. |
| WOS关键词 | GENERAL-RELATIVITY ; CELESTIAL MECHANICS ; PULSAR PSR-1913+16 ; MERGER RATE ; SYSTEMS |
| 资助项目 | NANOGrav Physics Frontiers Center (NSF)[1430284] ; NSF[1517003] ; European Research Council, under the European Union's Seventh Framework Programme (FP)[279702] ; European Research Council, under the European Union's Seventh Framework Programme (FP)[617199] ; European Research Council, under the European Union's Seventh Framework Programme (FP)[610058] ; European Research Council, under the European Union's Seventh Framework Programme (FP)[337062] ; NWO Vidi fellowship ; NASA Fermi program ; Chinese Academy of Science Pioneer Hundred Talents Program ; National Key R&D Program of China[2017YFA0402600] ; NSERC Discovery Grants |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000425460000002 |
| 资助机构 | NANOGrav Physics Frontiers Center (NSF) ; NSF ; European Research Council, under the European Union's Seventh Framework Programme (FP) ; NWO Vidi fellowship ; NASA Fermi program ; Chinese Academy of Science Pioneer Hundred Talents Program ; National Key R&D Program of China ; NSERC Discovery Grants ; NANOGrav Physics Frontiers Center (NSF) ; NSF ; European Research Council, under the European Union's Seventh Framework Programme (FP) ; NWO Vidi fellowship ; NASA Fermi program ; Chinese Academy of Science Pioneer Hundred Talents Program ; National Key R&D Program of China ; NSERC Discovery Grants ; NANOGrav Physics Frontiers Center (NSF) ; NSF ; European Research Council, under the European Union's Seventh Framework Programme (FP) ; NWO Vidi fellowship ; NASA Fermi program ; Chinese Academy of Science Pioneer Hundred Talents Program ; National Key R&D Program of China ; NSERC Discovery Grants ; NANOGrav Physics Frontiers Center (NSF) ; NSF ; European Research Council, under the European Union's Seventh Framework Programme (FP) ; NWO Vidi fellowship ; NASA Fermi program ; Chinese Academy of Science Pioneer Hundred Talents Program ; National Key R&D Program of China ; NSERC Discovery Grants |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/35742]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Stovall, K. |
| 作者单位 | 1.Natl Radio Astron Observ, 1003 Lopezville Rd, Socorro, NM 87801 USA 2.Max Planck Inst Radioastron, Hugel 69, D-53131 Bonn, Germany 3.Cornell Univ, Cornell Ctr Astrophys & Planetary Sci, Ithaca, NY 14853 USA 4.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA 5.West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA 6.Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA 7.ASTRON, Postbus 2, NL-7990 AA Dwingeloo, Netherlands 8.Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands 9.Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany 10.Leibniz Univ Hannover, D-30167 Hannover, Germany |
| 推荐引用方式 GB/T 7714 | Stovall, K.,Freire, P. C. C.,Chatterjee, S.,et al. PALFA Discovery of a Highly Relativistic Double Neutron Star Binary[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,854(2):6. |
| APA | Stovall, K..,Freire, P. C. C..,Chatterjee, S..,Demorest, P. B..,Lorimer, D. R..,...&Zhu, W. W..(2018).PALFA Discovery of a Highly Relativistic Double Neutron Star Binary.ASTROPHYSICAL JOURNAL LETTERS,854(2),6. |
| MLA | Stovall, K.,et al."PALFA Discovery of a Highly Relativistic Double Neutron Star Binary".ASTROPHYSICAL JOURNAL LETTERS 854.2(2018):6. |
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来源：国家天文台
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