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arXiv 2107.09971astro-ph.HEhep-phhep-th
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BH-PSR引力分子

The BH-PSR Gravitational Molecule

Tao Liu, Kun-Feng Lyu

摘要:

当一个有轴子云的黑洞(BH)遇到一个脉冲星(PSR)或有一个PSR伴星时,就可以形成一个“引力分子”。在这样的系统中,轴子云在二元杂化轨道上演化,就像在微观水平上化学分子中的电子云一样。为了证明这一点,我们开发了一个半解析的形式主义使用的方法与绝热近似的原子轨道的线性组合。一个振荡的轴子云的轮廓和扰动的二进制旋转,连同独特的和新颖的检测信号,然后预测。值得注意的是,所提出的PSR定时和偏振观测,即振荡的近星点时移和双折射与多重调制,相关的模式,因此可以适当地结合起来,以加强检测。

英文摘要:

While an axion-clouded black hole (BH) encounters a pulsar (PSR) or has a PSR companion, a "gravitational molecule" can be formed. In such a system, the axion cloud evolves at the binary hybrid orbitals, as it happens at microscopic level to electron cloud in a chemical molecule. To demonstrate this picture, we develop a semi-analytical formalism using the method of linear combination of atomic orbitals with an adiabatic approximation. An oscillating axion-cloud profile and a perturbed binary rotation, together with unique and novel detection signals, are then predicted. Remarkably, the proposed PSR timing and polarization observables, namely the oscillation of periastron time shift and the birefringence with multiple modulations, correlate in pattern, and thus can be properly combined to strengthen the detection.

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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