Ultracompact X-ray binaries with He star companions
Ultracompact X-ray binaries with He star companions
复制标题
带有氦星伴星的超紧凑 X 射线双星
DOI：
10.1093/mnras/stab2032
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发表时间：
2021-06
影响因子：
4.8
通讯作者：
Zhan-Wen Han
中科院分区：
文献类型：
--
作者：
Bo Wang;Wen-Cong Chen;Dong-Dong Liu;Hai-Liang Chen;Cheng-Yuan Wu;Wen-Shi Tang;Yun-Lang Guo;Zhan-Wen Han
摘要。超紧凑X射线双星（UCXB）是一种低质量X射线双星，具有缺氢的质量供体和超短的轨道周期。它们被认为是低频激光干涉空间天线（丽莎）的潜在光源。到目前为止，已经提出了几种用于形成UCXB的渠道。本文对氦星星施主通道进行了系统的研究，其中中子星星（NS）通过洛希瓣溢出吸积氦主序星星的物质，质量转移是由引力波辐射驱动的。首先，我们采用恒星演化程序恒星天体物理学实验模块（梅萨）跟踪了NS+He MS双星的长期演化，从而获得了产生UCXB的初始参数空间。然后，我们使用这些结果来执行一个详细的二进制人口合成方法，以获得银河系的UCXB率通过这个通道。我们估计银河系中出现的UCXB作为丽莎源的速率为${sim} 3.1！-！11.9，rmMyr ^{-1}$，银河系中这样的UCXB-LISA源的数量可以达到1-26个左右。这项工作表明，He星星施主通道可能对银河系UCXB的形成率有重要贡献。我们发现，UCXB通过该通道的演化轨迹可以很好地解释五个相对较长轨道周期的瞬态源的位置。我们还发现，此类UCXBs可以通过它们在质量传递速率与轨道周期图中的位置来识别。
ABSTRACT. Ultracompact X-ray binaries (UCXBs) are low-mass X-ray binaries with hydrogen-deficient mass donors and ultrashort orbital periods. They have been suggested to be the potential Laser Interferometer Space Antenna (LISA) sources in the low-frequency region. Several channels for the formation of UCXBs have been proposed so far. In this paper, we carried out a systematic study on the He star donor channel, in which a neutron star (NS) accretes matter from a He main-sequence (MS) star through Roche lobe overflow, where the mass transfer is driven by the gravitational wave radiation. First, we followed the long-term evolution of the NS+He MS binaries by employing the stellar evolution code Modules for Experiments in Stellar Astrophysics (mesa ), and thereby obtained the initial parameter spaces for the production of UCXBs. We then used these results to perform a detailed binary population synthesis approach to obtain the Galactic rates of UCXBs through this channel. We estimate the Galactic rates of UCXBs appearing as LISA sources to be ${sim} 3.1!-!11.9, rm Myr^{-1}$ through this channel, and the number of such UCXB-LISA sources in the Galaxy can reach about 1–26 calibrated by observations. This work indicates that the He star donor channel may contribute significantly to the Galactic UCXB formation rate. We found that the evolutionary tracks of UCXBs through this channel can account for the location of the five transient sources with relatively long orbital periods quite well. We also found that such UCXBs can be identified by their locations in the mass-transfer rate versus the orbital period diagram.
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DOI：
10.1111/j.1365-2966.2004.07486.x
发表时间：
2003-12
影响因子：
4.8
作者：
G. Nelemans;P. Jonker;T. R. Marsh;M. Klis
通讯作者：
G. Nelemans;P. Jonker;T. R. Marsh;M. Klis
DOI：
10.1086/429220
发表时间：
2005-01
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
N. Ivanova;F. Rasio;J. Lombardi, Jr.;K. Dooley;Z. Proulx
通讯作者：
N. Ivanova;F. Rasio;J. Lombardi, Jr.;K. Dooley;Z. Proulx
中等质量 X 射线双星中的热时标传质率
影响因子：
6.5
作者：
通讯作者：
--
中子星加氦星系统演化为中等质量双星脉冲星
影响因子：
4.8
作者：
Tang W;Liu D;王博
通讯作者：
王博
影响因子：
3.5
作者：
J. Solheim
通讯作者：
J. Solheim