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arXiv 0712.1832astro-ph
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LS I+61 303:微类星体还是非微类星体?

LS I+61 303: microquasar or not microquasar?

G. E. Romero, M. Orellana, A. T. Okazaki, S. P. Owocki

摘要:

LS I +61 303是一个令人费解的天体,从射电到高能伽马射线都能探测到。最近在其高能发射中观察到了变异性。该天体是一个双星系统,有一个致密天体和一颗Be星作为主星。次级的性质和伽马射线发射的起源目前还不清楚。最近的VLBA射电数据已经被用来声称该系统是一个Be/中子星碰撞风双星,而不是一个微类星体。我们审查的主要观点LS I +61 303的性质和三维SPH模拟的结果,可以揭示一些系统的性质。我们的研究结果支持吸积电源,兼容的微类星体的解释。

英文摘要:

LS I +61 303 is a puzzling object detected from radio up to high-energy gamma-rays. Variability has recently been observed in its high-energy emission. The object is a binary system, with a compact object and a Be star as primary. The nature of the secondary and the origin of the gamma-ray emission are not clearly established at present. Recent VLBA radio data have been used to claim that the system is a Be/neutron star colliding wind binary, instead of a microquasar. We review the main views on the nature of LS I +61 303 and present results of 3D SPH simulations that can shed some light on the nature of the system. Our results support an accretion powered source, compatible with a microquasar interpretation.

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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