Search for hidden Active Galactic Nuclei using Infrared satellite "AKARI" mid-infrared survey

我们使用Akari中红外(MIR)全天巡天技术进行了活动星系核(AGN)的搜索。AKARI是日本第一颗专门用于红外天文的红外卫星。特别是，我们的MIR搜索不仅可以找到正常的活动星系核，还可以找到在其他波长难以捉摸的尘埃活动星系核。结合Akari数据、地面望远镜获取的光谱和日本X射线卫星Suzaku的X射线数据，我们发现了三个尘埃活动星系核，这些活动星系核除了红外波段外，在其他波段没有任何活动星系核特征。我们还发现，这些尘埃活动星系核的宿主星系比光学光谱测量发现的活动星系核质量要小。虽然这一结果来自小的统计数据，但我们的调查将提供对未来寻找尘埃活动星系核的期望。

We performed the search for active galactic nuclei (AGNs) using AKARI mid-infrared (MIR) all-sky survey. “AKARI” is the first Japanese infrared satellite dedicated for infrared astronomy. Especially, our MIR searchcan find not only normal AGNs but also dusty AGNs which are elusive in other wavelengths. Combining AKARI data with optical spectra taken with ground-based telescopes and X-ray data of the Japanese X-ray satellite “Suzaku”, we found three dusty AGNs which do not show any AGN features in other wavelength but infrared band.We also found that the host galaxies of these dusty AGNs are less massive than AGNs that are found with optical spectroscopic surveys. While this result comes from small statistics, our survey will provide the expectation of future search for dusty AGNs.