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首页> 外文期刊>Chinese Journal of Astronomy and Astrophysics >Toward an Understanding of the Periastron Puzzle of PSR B1259-63
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Toward an Understanding of the Periastron Puzzle of PSR B1259-63

机译：了解PSR的Periastron难题B1259-63

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摘要

Efforts are made to understand the timing behaviors (e.g., the jumps in the projected pulsar semimajor axis at the periastron passages) observed in the 13-year monitoring of PSR B1259-63. Planet-like objects are suggested to orbit around the Be star, which may gravitationally perturb the (probably low mass) pulsar when it passes through periastron. An accretion disk should exist outside the pulsar's light cylinder, which creates a spindown torque on the pulsar due to the propeller effect. The observed negative braking index and the discrepant timing residuals close to periastron could be related to the existence of a disk with a varying accretion rate. A speculation is presented that the accretion rate may increase on a long timescale in order to explain the negative braking index.
机译：努力了解在对PSR B1259-63进行13年监测的过程中观察到的定时行为（例如，在投射的脉冲星半长轴在围星体通道处的跳跃）。建议将类似行星的物体绕Be恒星绕行，这可能会在脉冲星穿过星云时引力扰动脉冲星（质量可能较轻）。吸积盘应存在于脉冲星的轻型圆柱体外部，由于螺旋桨效应，该脉冲会在脉冲星上产生旋转转矩。观察到的负制动指数和接近于periastron的差异正时残差可能与存在变化的吸积率的制动盘有关。推测可能会在很长一段时间内增加吸积率，以解释负的制动指数。

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