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arXiv 1206.2389astro-ph.SR
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具有极低质量伴星的超紧凑“黑寡妇”双星的演化轨迹

Evolutionary trajectories of ultra-compact "black widow" pulsars with very low mass companions

O. G. Benvenuto, M. A. De Vito, J. E. Horvath

摘要:

毫秒双星与行星质量伴星的存在(Bailes等人,从恒星演化的角度来看,在近轨道上运行)是具有挑战性的。我们详细计算了二元系统的演化自洽,包括质量转移,蒸发和辐射的捐助者的X射线反馈,展示了一个新的进化路径的存在,导致短周期和紧凑的捐助者所需的观测PSR J1719-1438。我们还指出了另一种异国情调的性质的伴星行星质量的恒星。

英文摘要:

The existence of millisecond pulsars with planet-mass companions (Bailes et al., 2011) in close orbits is challenging from the stellar evolution point of view. We calculate in detail the evolution of binary systems self-consistently, including mass transfer, evaporation and irradiation of the donor by X-rays feedback, demonstrating the existence of a new evolutionary path leading to short periods and compact donors as required by the observations of PSR J1719-1438. We also point out the alternative of an exotic nature of the companion planet-mass star.

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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