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首页> 外文期刊>The Astrophysical journal >A STAR TRAIL MODEL OF THE GALACTIC CENTER SNAKE
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A STAR TRAIL MODEL OF THE GALACTIC CENTER SNAKE

机译：银河系中心蛇的星迹模型

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摘要

The filamentary synchrotron radio source G359.1—0.2, otherwise known as "the Snake," lies close to the center of the Galaxy. We suggest that it is the result of a star trail which intersected the expanding shock of a supernova remnant (SNR). The shock of the SNR traveled preferentially up the trail, accelerating electrons which produce the observed synchrotron radiation. A pressure-balance model for the expansion of the trail into the ambient interstellar medium is used to find values for the wind speed and mass-loss rate of the star that produces such a trail. It is shown that the energy of the SNR shock could supply the energy of the relativistic electrons of the Snake. This model places tight constraints on the expansion of the trail due to the transverse momentum imparted to it by the SNR shock propagating along it. It is found that for the star trail system to last long enough to form the source we observe, the relative parsec-scale motions of the interstellar medium in the vicinity of the Snake must be lower than the measured turbulent velocities. The strongest argument in favor of this model is that it accounts naturally for the high collimation of the Snake.
机译：丝状同步加速器无线电源G359.1-0.2，也称为“蛇”，位于银河系中心附近。我们认为，这是恒星迹线与超新星残留物（SNR）的扩展冲击相交的结果。 SNR的冲击优先沿路径传播，加速了产生观察到的同步加速器辐射的电子。用于将步道扩展到周围星际介质的压力平衡模型用于查找产生此类步道的恒星的风速和质量损失率的值。结果表明，SNR冲击的能量可以提供Snake相对论电子的能量。该模型对路径的扩展施加了严格的约束，这是由于沿路径传播的SNR冲击赋予路径的横向动量所致。已经发现，为了使星迹系统持续足够长的时间以形成我们观察到的源，蛇附近星际介质的相对视差尺度运动必须低于测得的湍流速度。支持此模型的最有力的论据是，它自然地解释了Snake的高度准直性。

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