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Arecibo pulsar survey using ALFA. II. The young, highly relativistic binary pulsar J1906+0746
文献类型：期刊论文
| 作者 | D'Amico, N; Burgay, M; Possenti, A; Hobbs, GB; Stappers, BW; Kramer, M; Backer, DC; Lommen, AN; Crawford, F; Kaspi, VM |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2006-03-20 |
| 卷号 | 640期号:1页码:428-434 |
| 关键词 | Pulsars : General Pulsars : Individual (Psr j1906+0746) |
| 英文摘要 | We report the discovery of PSR J1906+0746, a young 144 ms pulsar in a highly relativistic 3.98 hr orbit with an eccentricity of 0.085 and expected gravitational wave coalescence time of similar to 300 Myr. The new pulsar was found during precursor survey observations with the Arecibo 1.4 GHz feed array system and retrospectively detected in the Parkes Multibeam plane pulsar survey data. From radio follow-up observations with Arecibo, Jodrell Bank, Green Bank, and Parkes, we have measured the spin-down and binary parameters of the pulsar and its basic spectral and polarization properties. We also present evidence for pulse profile evolution, which is likely due to geodetic precession, a relativistic effect caused by the misalignment of the pulsar spin and total angular momentum vectors. Our measurements show that PSR J1906+0746 is a young object with a characteristic age of 112 kyr. From the measured rate of orbital periastron advance (7 degrees 57 +/- 0 degrees.03 yr(-1)), we infer a total system mass of 2.61 +/- 0: 02 M-circle dot. While these parameters suggest that the PSR J1906+0746 binary system might be a younger version of the double pulsar system, intensive searches for radio pulses from the companion have so far been unsuccessful. It is therefore not known whether the companion is another neutron star or a massive white dwarf. Regardless of the nature of the companion, a simple calculation suggests that the Galactic birthrate of binaries similar to PSR J1906+ 0746 is similar to 60 Myr(-1). This implies that PSR J1906+0746 will make a significant contribution to the computed cosmic inspiral rate of compact binary systems. |
| 语种 | 英语 |
| WOS记录号 | WOS:000236143100043 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8946]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Princeton Univ, Dept Phys, Princeton, NJ 08544 USA 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA 4.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA 5.Arecibo Observ, Natl Astron & Ionosphere Ctr, Arecibo, PR 00612 USA 6.Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada 7.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England 8.Bryn Mawr Coll, Dept Phys, Rosemont, PA 19010 USA 9.Natl Radio Astron Observ, Charlottesville, VA USA 10.NASA, Goddard Space Flight Ctr, USRA, EUD, Greenbelt, MD 20771 USA |
| 推荐引用方式 GB/T 7714 | D'Amico, N,Burgay, M,Possenti, A,et al. Arecibo pulsar survey using ALFA. II. The young, highly relativistic binary pulsar J1906+0746[J]. ASTROPHYSICAL JOURNAL,2006,640(1):428-434. |
| APA | D'Amico, N.,Burgay, M.,Possenti, A.,Hobbs, GB.,Stappers, BW.,...&Lorimer, DR.(2006).Arecibo pulsar survey using ALFA. II. The young, highly relativistic binary pulsar J1906+0746.ASTROPHYSICAL JOURNAL,640(1),428-434. |
| MLA | D'Amico, N,et al."Arecibo pulsar survey using ALFA. II. The young, highly relativistic binary pulsar J1906+0746".ASTROPHYSICAL JOURNAL 640.1(2006):428-434. |
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