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arXiv 1504.05043astro-ph.HE
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H.E.S.S.的光谱建模-探测到的脉冲星风星云

Spectral modelling of a H.E.S.S.-detected pulsar wind nebula

C. van Rensburg, P. P. Kruger, C. Venter

摘要:

在过去的十年里,地基成像大气切伦科夫望远镜已经发现了大约30个能量超过100 GeV的脉冲星风星云。我们提出的第一个结果从轻子发射代码模型的光谱能量密度的脉冲星风星云通过求解福克-普朗克输运方程和计算逆康普顿和同步辐射率。虽然像这样的模型以前已经开发过,但大多数模型都将脉冲星风星云的几何形状模拟为单个球体。我们已经创建了一个随时间变化的多区域模型,以研究粒子在脉冲星风星云中扩散时粒子光谱的变化,并预测星云中不同位置的辐射光谱。我们校准我们的新模型对一个更基本的以前的模型,并适合G0.9+0.1的观测光谱,结合从高能立体系统以及无线电和X射线实验的数据。

英文摘要:

In the last decade ground-based Imaging Atmospheric Cherenkov Telescopes have discovered roughly 30 pulsar wind nebulae at energies above 100 GeV. We present first results from a leptonic emission code that models the spectral energy density of a pulsar wind nebula by solving the Fokker-Planck transport equation and calculating inverse Compton and synchrotron emissivities. Although models such as these have been developed before, most of them model the geometry of a pulsar wind nebula as that of a single sphere. We have created a time-dependent, multi-zone model to investigate changes in the particle spectrum as the particles diffuse through the pulsar wind nebula, as well as predict the radiation spectrum at different positions in the nebula. We calibrate our new model against a more basic previous model and fit the observed spectrum of G0.9+0.1, incorporating data from the High Energy Stereoscopic System as well as radio and X-ray experiments.

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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