Crepuscular Rays from the Highly Inclined Active Galactic Nucleus in IC 5063Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Science Institute. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. These observations are associated with programs #15444 and #15609.,The Astrophysical Journal Letters

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Crepuscular Rays from the Highly Inclined Active Galactic Nucleus in IC 5063Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Science Institute. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. These observations are associated with programs #15444 and #15609.
The Astrophysical Journal Letters ( IF 8.8 ) Pub Date : 2020-10-08 , DOI: 10.3847/2041-8213/abb9b6
W. Peter Maksym ₁ , Judy Schmidt ₂ , William C. Keel ₃ , Giuseppina Fabbiano ₁ , Travis C. Fischer ₄ , Joss Bland-Hawthorn _{5,

6} , Aaron J. Barth ₇ , Martin Elvis ₁ , Tom Oosterloo _{8,

9} , Luis C. Ho _{10,

11} , Minjin Kim ₁₂ , Hyunmo Hwang ₁₂ , Evan Mayer ₁₃

Affiliation

Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Astrophysics Source Code Library, University of Maryland, 4254 Stadium Drive, College Park, MD 20742, USA
Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487, USA
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Sydney Institute of Astronomy, School of Physics, University of Sydney, Australia
ARC Centre of Excellence for All Sky Astrophysics in 3D, Australia
Department of Physics and Astronomy, University of California at Irvine, 4129 Frederick Reines Hall, Irvine, CA 92697-4575, USA
ASTRON, The Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA Dwingeloo, The Netherlands
Kapteyn Astronomical Institute, University of Groningen, Postbus 800, 9700 AV Groningen, The Netherlands
Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China
Department of Astronomy, School of Physics, Peking University, Beijing 100871, People's Republic of China
Department of Astronomy and Atmospheric Sciences, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic Of Korea
Independent researcher, Tucson, AZ 85719, USA

On Earth near sunset, the Sun may cast “crepuscular rays” such that clouds near the horizon obscure the origin of light scattered in bright rays. In principle, active galactic nuclei (AGN) should be able to produce similar effects. Using new Hubble Space Telescope (HST) near-infrared and optical observations, we show that the active galaxy IC 5063 contains broad radial rays extending to ≳11 kpc from the nucleus. We argue that the bright rays may arise from dusty scattering of continuum emission from the active nucleus, while the dark rays are due to shadowing near the nucleus, possibly by a warped torus. We also consider alternative AGN-related and stellar origins for the extended light.

中文翻译：

来自 IC 5063 中高度倾斜的活动星系核的黄昏射线基于从太空望远镜科学研究所的数据档案中获得的 NASA/ESA 哈勃太空望远镜的观测结果。STScI 由美国天文学研究大学协会运营，NASA 合同为 NAS 5-26555。这些观察结果与程序 #15444 和 #15609 相关联。

在接近日落的地球上，太阳可能会投射出“黄昏光线”，使得地平线附近的云团掩盖了以明亮光线散射的光的起源。原则上，活动星系核（AGN）应该能够产生类似的效果。使用新的哈勃太空望远镜 (HST) 近红外和光学观测，我们发现活动星系 IC 5063 包含从原子核延伸至 ≳ 11 kpc 的宽径向射线。我们认为明亮的光线可能来自活跃核连续发射的尘埃散射，而暗光线是由于核附近的阴影，可能是由扭曲的环面造成的。我们还考虑了扩展光的替代 AGN 相关和恒星起源。

更新日期：2020-10-08

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