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arXiv 2007.07113astro-ph.GA
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Interstellar Dust和日光层中的气体

Interstellar Dust and Gas in the Heliosphere

Jonathan D. Slavin

摘要:

进入日光层的星际尘埃和气体为我们提供了关于日光层和本地星际介质(LISM)的重要线索。我们从\emph{in situ}探测和吸收线数据得到的局部星际云(LIC)的图像提出了对云的起源和演化具有重要意义的问题。在地球上深海地壳和南极雪芯中发现的$^{60}$ Fe的新发现为超新星在形成LISM中的作用提供了证据。我们讨论了我们的模型的本地气泡内的LIC的演变和可能的解释超新星产生的尘埃的来源。

英文摘要:

Interstellar dust and gas that enter the heliosphere provide us with important clues about both the heliosphere and the local interstellar medium (LISM). The picture we have of the Local Interstellar Cloud (LIC) from both \emph{in situ} detections and absorption line data presents questions that have important implications for the origins and evolution of the cloud. New detections of $^{60}$Fe on Earth in deep sea crusts and Antarctic snow cores provide evidence for the role of supernovae in shaping the LISM. We discuss our models for the evolution of the LIC inside the Local Bubble and possible explanations for the source of the supernova produced dust.

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