arXivDaily arXiv每日学术速递 周一至周五更新
看起来今天可以划水了
arXiv 0807.3624astro-ph
收藏

识别受太阳风电荷交换影响的XMM-牛顿观测-部分I

Identifying XMM-Newton observations affected by solar wind charge exchange - Part I

J. A. Carter, S. Sembay

备注：
14 pages, 13 figures, accepted Astronomy and Astrophysics July 2008, high resolution images can be found at: http://www.star.le.ac.uk/~jac48/publications/var_swcx_aa.pdf
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

我们描述了一种方法，用于识别XMM-牛顿观测已受到太阳风电荷交换（SWCX）排放和目前的初步结果，以前未确定的情况下，这种排放的XMM-牛顿科学档案。该方法是基于检测的扩散X射线背景中的时间变化。我们判断一个低能量带的变异性，采取代表电荷交换发射的关键指标。我们将其与连续谱带的可变性进行比较，即使在发生SWCX增强的情况下，连续谱带的可变性也是不变的。我们讨论了以前发表的结果与SWCX污染，已与上述方法进行了测试。我们提出了一个选择的意见，我们认为显示以前未公布的SWCX增强，并进一步调查这些意见与数据的相关性从太阳风天文台，ACE。我们还考虑的几何形状和视角的XMM-牛顿在观察检查电荷交换发射的起源，无论是从相互作用与地冠中性在地球的磁鞘或从日光层和日球顶的时间。

英文摘要：

We describe a method for identifying XMM-Newton observations that have been affected by Solar Wind Charge Exchange (SWCX) emission and present preliminary results of previously unidentified cases of such emission within the XMM-Newton Science Archive. The method is based on detecting temporal variability in the diffuse X-ray background. We judge the variability of a low energy band, taken to represent the key indicators of charge exchange emission. We compare this to the variability of a continuum band, which is expected to be non-varying, even in the case when SWCX enhancement has occurred. We discuss previously published results with SWCX contamination that have been tested with the above method. We present a selection of observations that we consider to show previously unpublished SWCX enhancements, and further investigate these observations for correlation with data from the solar wind observatory, ACE. We also consider the geometry and viewing angle of XMM-Newton at the time of the observation to examine the origin of the charge exchange emission, whether it be from interactions with geocoronal neutrals in Earth's magnetosheath or from the heliosphere and heliopause.

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。

↑