LOFAR Discovery of the Fastest-spinning Millisecond Pulsar in the Galactic Field
文献类型：期刊论文
| 作者 | Bassa, C. G.20; Clark, C. J.8,9; Nieder, L.8,9; Sanidas, S.3; Kondratiev, V. I.7,20; Gusinskaia, N. V.3; Breton, R. P.6; Ferrara, E. C.4,5; Hessels, J. W. T.3,20; Pleunis, Z.1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2017-09-10 |
| 卷号 | 846期号:2 |
| 关键词 | Pulsars: General Pulsars: Individual (Psr J0952-0607) Stars: Neutron |
| DOI | 10.3847/2041-8213/aa8400 |
| 文献子类 | Article |
| 英文摘要 | We report the discovery of PSR J0952-0607, a 707 Hz binary millisecond pulsar that is now the fastest-spinning neutron star known in the Galactic field (i. e., outside of a globular cluster). PSR J0952-0607 was found using LOFAR at a central observing frequency of 135 MHz, well below the 300 MHz to 3 GHz frequencies typically used in pulsar searches. The discovery is part of an ongoing LOFAR survey targeting unassociated Fermi-Large Area Telescope.-ray sources. PSR J0952-0607 is in a 6.42 hr orbit around a very low-mass companion (M greater than or similar to 0.02 M), and we identify a strongly variable optical source, modulated at the orbital period of the pulsar, as the binary companion. The light curve of the companion varies by 1.6 mag from r = 22.2 at maximum to r > 23.8, indicating that it is irradiated by the pulsar wind. Swift observations place a 3s upper limit on the 0.3 -10 keV X-ray luminosity of L-X < 1.1 x 10(31) erg s(-1) (using the 0.97 kpc distance inferred from the dispersion measure). Though no eclipses of the radio pulsar are observed, the properties of the system classify it as a black widow binary. The radio pulsed spectrum of PSR J0952-0607, as determined through flux density measurements at 150 and 350 MHz, is extremely steep with alpha similar to-3 (where S mu n(alpha)). We discuss the growing evidence that the fastest-spinning radio pulsars have exceptionally steep radio spectra, as well as the prospects for finding more sources like PSR J0952-0607. |
| WOS关键词 | X-RAY BINARY ; IMAGING OBSERVATIONS ; INITIAL DISCOVERIES ; 1ST DISCOVERIES ; PSR J1023+0038 ; RADIO PULSARS ; NEUTRON-STARS ; FREQUENCY ; STATE ; DISTRIBUTIONS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000409393500003 |
| 资助机构 | European Research Council (ERC) under the European Union's Seventh Framework Programme (FP)/ERC grant(337062) ; European Research Council (ERC) under the European Union's Seventh Framework Programme (FP)/ERC grant(337062) ; ERC under the European Union(715051) ; ERC under the European Union(715051) ; International LOFAR Telescope (ILT)(LC7_002 ; International LOFAR Telescope (ILT)(LC7_002 ; Istituto Nazionale di Astrofisica in Italy ; Istituto Nazionale di Astrofisica in Italy ; Centre National d'Etudes Spatiales in France ; Centre National d'Etudes Spatiales in France ; DOE(DE-AC02-76SF00515) ; DOE(DE-AC02-76SF00515) ; DDT7_002 ; DDT7_002 ; LT5_003) ; LT5_003) ; European Research Council (ERC) under the European Union's Seventh Framework Programme (FP)/ERC grant(337062) ; European Research Council (ERC) under the European Union's Seventh Framework Programme (FP)/ERC grant(337062) ; ERC under the European Union(715051) ; ERC under the European Union(715051) ; International LOFAR Telescope (ILT)(LC7_002 ; International LOFAR Telescope (ILT)(LC7_002 ; Istituto Nazionale di Astrofisica in Italy ; Istituto Nazionale di Astrofisica in Italy ; Centre National d'Etudes Spatiales in France ; Centre National d'Etudes Spatiales in France ; DOE(DE-AC02-76SF00515) ; DOE(DE-AC02-76SF00515) ; DDT7_002 ; DDT7_002 ; LT5_003) ; LT5_003) |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/20124]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada 2.McGill Univ, McGill Space Inst, 3600 Univ St, Montreal, PQ H3A 2T8, Canada 3.Univ Amsterdam, Astron Inst Anton Pannekoek, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands 4.NASA, Goddard Space Flight Ctr, Ctr Res & Explorat Space Sci, Greenbelt, MD 20771 USA 5.Univ Maryland, Dept Astron, College Pk, MD 20742 USA 6.Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England 7.Russian Acad Sci, Lebedev Phys Inst, Astro Space Ctr, Profsoyuznaya Str 84-32, Moscow 117997, Russia 8.Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-30167 Hannover, Germany 9.Leibniz Univ Hannover, D-30167 Hannover, Germany 10.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bassa, C. G.,Clark, C. J.,Nieder, L.,et al. LOFAR Discovery of the Fastest-spinning Millisecond Pulsar in the Galactic Field[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,846(2). |
| APA | Bassa, C. G..,Clark, C. J..,Nieder, L..,Sanidas, S..,Kondratiev, V. I..,...&Li, T..(2017).LOFAR Discovery of the Fastest-spinning Millisecond Pulsar in the Galactic Field.ASTROPHYSICAL JOURNAL LETTERS,846(2). |
| MLA | Bassa, C. G.,et al."LOFAR Discovery of the Fastest-spinning Millisecond Pulsar in the Galactic Field".ASTROPHYSICAL JOURNAL LETTERS 846.2(2017). |
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