The High Time Resolution Universe survey - XI. Discovery of five recycled pulsars and the optical detectability of survey white dwarf companions
The High Time Resolution Universe survey - XI. Discovery of five recycled pulsars and the optical detectability of survey white dwarf companions
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DOI：
10.1093/mnras/stu2350
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发表时间：
2014-11
影响因子：
4.8
通讯作者：
S. Bates;D. Thornton;M. Bailes;E. Barr;C. Bassa;N. Bhat;M. Burgay;S. Burke-Spolaor;D. Champion;Chris Flynn;A. Jameson;S. Johnston;Michael Keith;M. Kramer;L. Levin;A. Lyne;S. Milia;C. Ng;E. Petroff;A. Possenti;B. Stappers;W. Straten;C. Tiburzi
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文献类型：
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作者：
S. Bates;D. Thornton;M. Bailes;E. Barr;C. Bassa;N. Bhat;M. Burgay;S. Burke-Spolaor;D. Champion;Chris Flynn;A. Jameson;S. Johnston;Michael Keith;M. Kramer;L. Levin;A. Lyne;S. Milia;C. Ng;E. Petroff;A. Possenti;B. Stappers;W. Straten;C. Tiburzi
我们在高时间分辨率宇宙（HTRU）调查的银河系中纬度部分发现了另外五个循环脉冲星系统。脉冲星的旋转周期从2毫秒到66毫秒不等，其中4颗属于双星系统，轨道周期在10.8小时到9.0天之间。其中三个双星系统特别有趣；PSR J1227 6208的脉冲周期为34.5 ms，是近圆轨道脉冲星中质量函数最高的。圆形轨道表明这颗伴星不是另一颗中子星，因此未来的计时实验可能会揭示它是迄今为止发现的最重的白矮星之一（> 1.3 M）。对PSR J1431 4715的时间观测表明，它被它的伴星黯然失色，伴星的质量表明它属于红背类黯然毫秒脉冲星。PSR J1653 2054有一个最小质量仅为0:08 M的伴星，将其置于具有低质量伴星的脉冲星类别中。然而，与大多数这样的系统不同的是，在1.4千兆赫波段没有观测到日食的证据。
We present the discovery of a further ve recycled pulsar systems in the midGalactic latitude portion of the High Time Resolution Universe (HTRU) Survey. The pulsars have rotational periods ranging from 2 ms to 66 ms, and four are in binary systems with orbital periods between 10.8 hours and 9.0 days. Three of these binary systems are particularly interesting; PSR J1227 6208 has a pulse period of 34.5 ms and the highest mass function of all pulsars with near-circular orbits. The circular orbit suggests that the companion is not another neutron star, so future timing experiments may reveal one of the heaviest white dwarfs ever found (> 1.3 M ). Timing observations of PSR J1431 4715 indicate that it is eclipsed by its companion which has a mass indicating it belongs to the redback class of eclipsing millisecond pulsars. PSR J1653 2054 has a companion with a minimum mass of only 0:08 M , placing it among the class of pulsars with low-mass companions. Unlike the majority of such systems, however, no evidence of eclipses is seen at 1.4 GHz.