天 vela PWN 中喷流的 X 射线偏振

IF 4.7 3区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Monthly Notices of the Royal Astronomical Society Pub Date : 2024-09-05 DOI:10.1093/mnras/stae2068

Kuan Liu, Fei Xie, En-Wei Liang

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引用次数: 0

摘要

本文研究了维拉脉冲星风星云（PWN）中喷流的 X 射线偏振。在减去背景后，我们发现螺旋喷流区域的极化程度很高，接近同步辐射机制所允许的上限。这一结果表明磁场是高度有序的，尽管射流的形态是弯曲的，而且变化迅速，这表明射流的磁准直过程并没有引入明显的湍流。极化角垂直于星云的对称轴，与磁流体力学数值模拟的结果一致。这一发现揭示了与喷流结构的动力学和演变有关的潜在机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The X-ray polarization of the jet in the vela PWN

In this paper, we studied the X-ray polarization of the jet in the Vela Pulsar Wind Nebula (PWN). After the background subtraction, we found a high degree of polarization in the helical jet region, close to the upper limit allowed by the synchrotron radiation mechanism. This result indicates the magnetic field is highly ordered, even though the jet’s morphology is curved and varies rapidly, which suggests that the magnetic collimation process for the jet doesn’t introduce significant turbulence. The polarization angle is perpendicular to the symmetry axis of the nebula, consistent with the results from the magnetohydrodynamic numerical simulations. This finding sheds light on the underlying mechanisms related to the dynamics and evolution of the jet structures.

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来源期刊

Monthly Notices of the Royal Astronomical Society ASTRONOMY & ASTROPHYSICS-

CiteScore

9.10

自引率

37.50%

发文量

3198

审稿时长

3 months

期刊介绍： Monthly Notices of the Royal Astronomical Society is one of the world''s leading primary research journals in astronomy and astrophysics, as well as one of the longest established. It publishes the results of original research in positional and dynamical astronomy, astrophysics, radio astronomy, cosmology, space research and the design of astronomical instruments.