arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1307.7629astro-ph.HE
收藏

高时间分辨率宇宙脉冲星巡天- VII:发现五个毫秒脉冲星和二进制和孤立回收脉冲星的不同光度特性

The High Time Resolution Universe Pulsar Survey - VII: discovery of five millisecond pulsars and the different luminosity properties of binary and isolated recycled pulsars

M. Burgay, M. Bailes, S. D. Bates, N. D. R. Bhat, S. Burke-Spolaor, D. J. Champion, P. Coster, N. D'Amico, S. Johnston, M. J. Keith, M. Kramer, L. Levin, A. G. … 展开作者

M. Burgay, M. Bailes, S. D. Bates, N. D. R. Bhat, S. Burke-Spolaor, D. J. Champion, P. Coster, N. D'Amico, S. Johnston, M. J. Keith, M. Kramer, L. Levin, A. G. Lyne, S. Milia, C. Ng, A. Possenti, B. W. Stappers, D. Thornton, C. Tiburzi, W. van Straten, C. G. Bassa

摘要:

本文介绍了正在进行的高时间分辨率宇宙脉冲星巡天(HTRU)中发现的五颗毫秒双星(MSP)的发现和时间参数,其中四颗在可能有白矮星伴星的双星系统中,一颗是孤立的。我们还提出了高质量的偏振数据,其中四个。这些进一步的发现证实了我们的调查在寻找旋转周期非常短的脉冲星方面的巨大潜力。这五个MSP中至少有两个是脉冲星定时阵列项目的优秀候选者。由于在HTRU调查中发现了大量的MSP,我们重新审视了孤立和二元MSP的光度分布是否不同的问题。使用Cordes和Lazio距离模型以及我们新的和目录中的通量密度测量,我们发现银河系盘中42个最明亮的MSP中有41个是二进制的,统计分析表明亮度函数的差异具有99.9%的显着性。我们的结论是,形成过程中,导致孤立的MSP影响他们的光度,尽管他们的周期和周期的衍生物是类似的双星系统中的恒星。

英文摘要:

This paper presents the discovery and timing parameters for five millisecond pulsars (MSPs), four in binary systems with probable white dwarf companions and one isolated, found in ongoing processing of the High Time Resolution Universe Pulsar Survey (HTRU). We also present high quality polarimetric data on four of them. These further discoveries confirm the high potential of our survey in finding pulsars with very short spin periods. At least two of these five MSPs are excellent candidates to be included in the Pulsar Timing Array projects. Thanks to the wealth of MSP discoveries in the HTRU survey, we revisit the question of whether the luminosity distributions of isolated and binary MSPs are different. Using the Cordes and Lazio distance model and our new and catalogue flux density measurements, we find that 41 of the 42 most luminous MSPs in the Galactic disk are in binaries and a statistical analysis suggests that the luminosity functions differ with 99.9% significance. We conclude that the formation process that leads to solitary MSPs affects their luminosities, despite their period and period derivatives being similar to those of pulsars in binary systems.

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。

↑