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首页> 外文期刊>Frontiers in Astronomy and Space Sciences >Active Galactic Nuclei at All Wavelengths and from All Angles
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Active Galactic Nuclei at All Wavelengths and from All Angles

机译：所有波长和所有角度的活跃银河核

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AGN are quite unique astronomical sources emitting over more than twenty orders of magnitude in frequency, with different electromagnetic bands providing windows on different sub-structures and their physics. They come in a large number of flavors only partially related to intrinsic differences. I highlight here the types of sources selected in different bands, the relevant selection effects and biases, and the underlying physical processes. I then look at the ``big picture'' by describing the most important parameters one needs to describe the variety of AGN classes and by discussing AGN at all frequencies in terms of their sky surface density. I conclude with a look at the most pressing open issues and the main new facilities, which will flood us with new data to tackle them.
机译：AGN是非常独特的天文源，其发射的频率超过20个数量级，并且不同的电磁波段为不同的子结构及其物理结构提供了窗口。它们具有大量的风味，仅与内在差异部分相关。我在这里重点介绍在不同波段中选择的源的类型，相关的选择效果和偏差以及潜在的物理过程。然后，我通过描述一个最重要的参数来描述各种AGN类别，并通过在其天空表面密度讨论所有频率的AGN来查看``全局''。最后，我们着眼于最紧迫的未解决问题和主要的新设施，这些新设施将为我们提供解决这些问题的新数据。

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