Venus Observations at 40 and 90 GHz with CLASS,The Planetary Science Journal

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Venus Observations at 40 and 90 GHz with CLASS
The Planetary Science Journal ( IF 3.8 ) Pub Date : 2021-04-12 , DOI: 10.3847/psj/abedad
Sumit Dahal _{1,

2} , Michael K. Brewer ₂ , John W. Appel ₂ , Aamir Ali _{2,

3} , Charles L. Bennett ₂ , Ricardo Bustos ₄ , Manwei Chan ₂ , David T. Chuss ₅ , Joseph Cleary ₂ , Jullianna D. Couto ₂ , Rahul Datta ₂ , Kevin L. Denis ₁ , Joseph Eimer ₂ , Francisco Espinoza ₄ , Thomas Essinger-Hileman _{1,

2} , Dominik Gothe ₂ , Kathleen Harrington _{2,

6} , Jeffrey Iuliano ₂ , John Karakla ₂ , Tobias A. Marriage ₂ , Sasha Novack ₂ , Carolina Nez ₂ , Ivan L. Padilla ₂ , Lucas Parker _{2,

7} , Matthew A. Petroff ₂ , Rodrigo Reeves ₈ , Gary Rhoades ₂ , Karwan Rostem ₁ , Deniz A. N. Valle ₂ , Duncan J. Watts _{2,

9} , Janet L. Weiland ₂ , Edward J. Wollack ₁ , Zhilei Xu _{2,

10}

Affiliation

NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA
Department of Physics and Astronomy, Johns Hopkins University, 3701 San Martin Drive, Baltimore, MD 21218, USA
Department of Physics, University of California, Berkeley, CA 94720, USA
Facultad de Ingeniera, Universidad Catlica de la Santsima Concepcin, Alonso de Ribera 2850, Concepcin, Chile
Department of Physics, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, USA
Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA
Space and Remote Sensing, MS D436, Los Alamos National Laboratory, Los Alamos, NM 87544, USA
CePIA, Departamento de Astronoma, Universidad de Concepcin, Concepcin, Chile
Institute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029 Blindern, NO-0315 Oslo, Norway
MIT Kavli Institute, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA

Using the Cosmology Large Angular Scale Surveyor, we measure the disk-averaged absolute Venus brightness temperature to be 432.3 2.8 K and 355.6 1.3 K in the Q and W frequency bands centered at 38.8 and 93.7 GHz, respectively. At both frequency bands, these are the most precise measurements to date. Furthermore, we observe no phase dependence of the measured temperature in either band. Our measurements are consistent with a CO₂-dominant atmospheric model that includes trace amounts of additional absorbers like SO₂ and H₂SO₄.

中文翻译：

使用 CLASS 在 40 和 90 GHz 进行金星观测

使用宇宙学大角标尺测量仪，我们分别在以 38.8 GHz 和 93.7 GHz 为中心的Q和W频段中测量到盘面平均绝对金星亮温为 432.3 2.8 K 和 355.6 1.3 K。在这两个频段，这些都是迄今为止最精确的测量。此外，我们没有观察到任一波段中测量温度的相位依赖性。我们的测量结果与 CO ₂占主导地位的大气模型一致，该模型包括痕量的附加吸收剂，如 SO ₂和 H ₂ SO ₄。

更新日期：2021-04-12

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