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arXiv 0707.2680astro-ph
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Pictor A射电叶的X射线观测:空间分辨研究

An X-ray view of Pictor A radio lobes: a spatially resolved study

G. Migliori, P. Grandi, G. C. G. Palumbo, G. Brunetti, C. Stanghellini

摘要:

从50千秒的XMM-牛顿观测开始,首次对射电星系Pictor A的叶进行了空间分辨分析。测量了磁场、B_{IC}、粒子密度、粒子与磁场能量密度比。我们的研究表明,B_{IC}通过叶变化。相反,观察到颗粒的相当均匀的分布。在两个叶中,均分磁场B_{eq}大于逆康普顿值B_{IC},逆康普顿值是根据射电与X射线通量比计算的。

英文摘要:

A spatially resolved analysis of the lobes of the radio galaxy Pictor A has been performed for the first time starting from a 50 ksec XMM-Newton observation. Magnetic field, B_{IC}, particle density, particle to magnetic field energy density ratios have been measured. Our study shows that B_{IC} varies through the lobes. On the contrary, a rather uniform distribution of the particles is observed. In both the lobes, the equipartition magnetic field, B_{eq}, is bigger than the Inverse Compton value, B_{IC}, calculated from the radio to X-ray flux ratio.

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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