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arXiv 0806.2134astro-ph
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实验室辐射冲击与天体物理辐射冲击之间的联系

Link between laboratory and astrophysical radiative shocks

Claire Michaut, Emeric Falize, Cécile Cavet, Serge Bouquet, Michel Koenig, Tommaso Vinci, Bérénice Loupias

摘要:

这项工作提供了描述在天体物理学和实验室中的辐射激波增长的激波后结构的解析解。对于指数$ε$、$ζ$和$θ$的任何值,求解包括冷却函数$Λ\propto ρ^ε P^ζ x^θ$的方程。这个模型是适当的天体物理学观测到的辐射冲击出现在光学薄介质。相比之下,在实验室中,使用高功率激光进行的辐射冲击呈现辐射前体,因为等离子体或多或少具有光学厚度。我们在实验室条件下研究了激波后区,并与天体物理激波结构进行了比较。此外,我们试图使用相同的方程来描述辐射前兆,但冷却功能略有修改。在未来的实验中,我们将使用X射线诊断探测PSR。这些新的实验结果将允许验证我们的天体物理数值代码。

英文摘要:

This work provides analytical solutions describing the post-shock structure of radiative shocks growing in astrophysics and in laboratory. The equations including a cooling function $Λ\propto ρ^ε P^ζ x^θ$ are solved for any values of the exponents $ε$, $ζ$ and $θ$. This modeling is appropriate to astrophysics as the observed radiative shocks arise in optically thin media. In contrast, in laboratory, radiative shocks performed using high-power lasers present a radiative precursor because the plasma is more or less optically thick. We study the post-shock region in the laboratory case and compare with astrophysical shock structure. In addition, we attempt to use the same equations to describe the radiative precursor, but the cooling function is slightly modified. In future experiments we will probe the PSR using X-ray diagnostics. These new experimental results will allow to validate our astrophysical numerical codes.

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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