标题： 远离PSR B1259-63的X射线发射天体的起源 显示英文标题

标题： The origin of the X-ray-emitting object moving away from PSR B1259-63

摘要： 一个神秘的发射X射线的天体被探测到正远离高能伽马射线双星PSR B1259-63，该双星系统包含一个非吸积脉冲星和一颗Be星，这两者的风相互碰撞形成了复杂的相互作用结构。 鉴于该双星系统的强椭圆轨道特性，这种相互作用结构应该是高度各向异性的，这与激波风的复杂演化一起，可以解释所观测到的移动X射线特征的起源。 我们在这里提出，一种由脉冲星-恒星风混合物构成的快速外流总是存在于双星系统近日点方向上，恒星风的注入发生在接近近日点经过的轨道相位附近。 这种周期性加载恒星风的外流将以高速运动，并且由于激波的存在，很可能承载非热活动，其尺度与所观测到的移动X射线天体相当。 因此，这种外流是非常好的候选者来解释这一X射线特征。 如果得到证实，这将意味着脉冲星-恒星风推力比为$\sim 0.1$，并且存在一个类似喷流的结构，延伸至其在星际介质中的终止点。 显示英文摘要

摘要： A mysterious X-ray-emitting object has been detected moving away from the high-mass gamma-ray binary PSR B1259-63, which contains a non-accreting pulsar and a Be star whose winds collide forming a complex interaction structure. Given the strong eccentricity of this binary, the interaction structure should be strongly anisotropic, which together with the complex evolution of the shocked winds, could explain the origin of the observed moving X-ray feature. We propose here that a fast outflow made of a pulsar-stellar wind mixture is always present moving away from the binary in the apastron direction, with the injection of stellar wind occurring at orbital phases close to periastron passage. This outflow periodically loaded with stellar wind would move with a high speed, and likely host non-thermal activity due to shocks, on scales similar to those of the observed moving X-ray object. Such an outflow is thus a very good candidate to explain this X-ray feature. This, if confirmed, would imply pulsar-to-stellar wind thrust ratios of $\sim 0.1$, and the presence of a jet-like structure on the larger scales, up to its termination in the ISM.