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arXiv 1209.4293astro-ph.HEastro-ph.GA
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绿岸望远镜350兆赫漂移扫描巡天I:巡天观测和13颗脉冲星的发现

The Green Bank Telescope 350 MHz Drift-scan Survey I: Survey Observations and the Discovery of 13 Pulsars

Jason Boyles, Ryan S. Lynch, Scott M. Ransom, Ingrid H. Stairs, Duncan R. Lorimer, Maura A. McLaughlin, Jason W. T. Hessels, Vicky M. Kaspi, Vlad I. Kondratiev,… 展开作者

Jason Boyles, Ryan S. Lynch, Scott M. Ransom, Ingrid H. Stairs, Duncan R. Lorimer, Maura A. McLaughlin, Jason W. T. Hessels, Vicky M. Kaspi, Vlad I. Kondratiev, Anne Archibald, Aaron Berndsen, Rogerio F. Cardoso, Angus Cherry, Courtney R. Epstein, Chen Karako-Argaman, Christie A. McPhee, Tim Pennucci, Mallory S. E. Roberts, Kevin Stovall, Joeri van Leeuwen

摘要:

2007年夏天,我们用绿岸望远镜在350兆赫的射频上进行了1191小时的“漂移扫描”脉冲星搜索观测。在这里,我们描述的调查设置,搜索程序,和发现和后续的时间13颗星。在这些新发现中,有一颗(PSR J1623-0841)是仅通过单脉冲发现的,两颗(PSR J1327-0755和J1737-0814)是毫秒脉冲星,另一颗(PSR J2222-0137)是轻度再循环脉冲星。PSR J1327-0755是一颗2.7 ms的脉冲星,DM为27.9 pc cm^{-3},轨道为8.7天,最小伴星质量为0.22太阳质量。PSR J1737-0814是一颗4.2 ms脉冲星,DM为55.3 pc cm^{-3},轨道为79.3天,最小伴星质量为0.06太阳质量。PSR J2222-0137是一颗32.8 ms的脉冲星,DM值非常低,为3.27 pc cm^{-3},轨道为2.4天,最小伴星质量为1.11太阳质量。它很可能是一个白矮星-中子星系统,或者是一个不寻常的低偏心率双中子星系统。在这项调查中发现的其他十个天体在Lynch et al. 2012的配套论文中报告。

英文摘要:

Over the summer of 2007, we obtained 1191 hours of `drift-scan' pulsar search observations with the Green Bank Telescope at a radio frequency of 350 MHz. Here we describe the survey setup, search procedure, and the discovery and follow-up timing of thirteen pulsars. Among the new discoveries, one (PSR J1623-0841) was discovered only through its single pulses, two (PSRs J1327-0755 and J1737-0814) are millisecond pulsars, and another (PSR J2222-0137) is a mildly recycled pulsar. PSR J1327-0755 is a 2.7 ms pulsar at a DM of 27.9 pc cm^{-3} in a 8.7 day orbit with a minimum companion mass of 0.22 solar mass. PSR J1737-0814 is a 4.2 ms pulsar at a DM of 55.3 pc cm^{-3} in a 79.3 day orbit with a minimum companion mass of 0.06 solar mass. PSR J2222-0137 is a 32.8 ms pulsar at a very low DM of 3.27 pc cm^{-3} in a 2.4 day orbit with a minimum companion mass of 1.11 solar mass. It is most likely a white dwarf-neutron star system or an unusual low-eccentricity double neutron star system. Ten other pulsars discovered in this survey are reported in the companion paper Lynch et al. 2012.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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