arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0708.0290astro-ph
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PSR B0540-69系统的HST多历元成像揭示了一个高度动态的同步加速器星云

HST multi-epoch imaging of the PSR B0540-69 system unveils a highly dynamic synchrotron nebula

A. De Luca, R. P. Mignani, P. A. Caraveo, G. F. Bignami

摘要:

PSR B 0540 -69是大麦云星云中的蟹状星云。这两个人的年龄、精力和整体行为都非常相似。脉冲星风星云(PWNe)的总体外观也是如此。对哈勃太空望远镜10年图像的分析揭示了PSR B 0540 -69周围PWN的显着变化,热点以~0.04c的速度移动。这种行为,让人想起在蟹状星云沿反喷流方向观察到的变化,可能表明该系统的几何形状的另一种情况。同样的数据被用来评估脉冲星自行。零位移记录超过10年,使我们能够设置一个3sigma上限为290公里/秒的脉冲星速度。

英文摘要:

PSR B0540-69 is the Crab twin in the Large Magellanic Cloud. Age, energetic and overall behaviour of the two pulsars are very similar. The same is true for the general appearance of their pulsar wind nebulae (PWNe). Analysis of Hubble Space Telescope images spanning 10 years unveiled significant variability in the PWN surrounding PSR B0540-69, with a hot spot moving at ~0.04c. Such behaviour, reminiscent of the variability observed in the Crab nebula along the counter-jet direction, may suggest an alternative scenario for the geometry of the system. The same data were used to assess the pulsar proper motion. The null displacement recorded over 10 y allowed us to set a 3sigma upper limit of 290 km/s to the pulsar velocity.

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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