arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.05424astro-ph.GA
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斯皮策太空望远镜观测到的活动星系核

Active Galactic Nuclei as seen by the Spitzer Space Telescope

Mark Lacy, Anna Sajina

摘要:

斯皮策太空望远镜彻底改变了对活动星系核(AGN)的研究。它在中红外波段的综合灵敏度和绘图速度揭示了大量高度模糊的活动星系核。这个人口意味着更高的辐射吸积效率,因此可能是一个更高的自旋黑洞比调查表明,在光学和X射线。斯皮策望远镜独特的中红外光谱能力使人们对活动星系核周围尘埃的分布和性质有了重要的了解,从而能够分离活动星系核和星爆成分,探测热尘埃发射中的硅酸盐特征,以及识别与活动星系核活动有关的冲击气体。斯皮策的灵敏度允许几乎完全识别的主机星系的样品中选择的活动星系核的X射线和无线电。当我们期待詹姆斯韦伯太空望远镜时,从斯皮策研究中吸取的教训将为新的和即将到来的红外设施的观测计划提供信息。

英文摘要:

The Spitzer Space Telescope revolutionized studies of Active Galactic Nuclei (AGNs). Its combined sensitivity and mapping speed at mid-infrared wavelengths revealed a substantial population of highly-obscured AGNs. This population implies a higher radiative accretion efficiency, and thus possibly a higher spin for black holes than indicated by surveys in the optical and X-ray. The unique mid-infrared spectrographic capability of Spitzer gave important insights into the distribution and nature of the dust surrounding AGNs, enabling the separation of AGN and starburst components, the detection of silicate features in emission from hot dust, and the identification of shocked gas associated with AGN activity. The sensitivity of Spitzer allowed almost complete identification of the host galaxies of samples of AGNs selected in the X-ray and radio. As we look forward to the James Webb Space Telescope, the lessons learned from Spitzer studies will inform observational programs with new and upcoming infrared facilities.

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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