Ionospheric inversion of the Venus Express radio occultation data observed by Shanghai 25 m and New Norcia 35 m antennas
文献类型：期刊论文
| 作者 | Chen, Cong-Yan3; Zhang, Su-Jun1,5,6; Jian, Nian-Chuan6; Ping, Jin-Song4; Zhang, Ke-Fei2; Li, Jin-Ling6 |
| 刊名 | Research in Astronomy and Astrophysics
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 15期号:9页码:1559-1570 |
| 关键词 | Planets And Satellites: Terrestrial Planets Planets And Satellites: Atmospheres Planets And Satellites: Detection |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/15/9/012 |
| 文献子类 | Article |
| 英文摘要 | Electron density profiles of Venus' ionosphere are inverted from the Venus Express (VEX) one-way open-loop radio occultation experiments carried out by the Shanghai 25 m antenna from November 2011 to January 2012 at solar maximum conditions and by the New Norcia 35 m antenna from August 2006 to June 2008 at solar intermediate conditions. The electron density profile (from 110 km to 400 km), retrieved from the X-band egress observation at the Shanghai station, shows a single peak near 147 km with a peak density of about 2 x 1 0(4) c m(-3) at a solar zenith angle of 94 degrees. As a comparison, the VEX radio science (VeRa) observations at the New Norcia station were also examined, including S- and X-band and dual-frequency data in the ingress mode. The results show that the electron density profiles retrieved from the S-band data are more analogous to the dual-frequency data in terms of the profile shape, compared with the X-band data. Generally, the S-band results slightly underestimate the magnitude of the peak density, while the X-band results overestimate it. The discrepancy in the X-band profile is probably due to the relatively larger unmodeled orbital errors. It is also expected that the ionopause height is sensitive to the solar wind dynamical pressure in high and intermediate solar activities, usually in the range of 200-1000 km on the dayside and much higher on the nightside. Structural variations ("bulges" and fluctuations) can be found in the electron density profiles during intermediate solar activity, which may be caused by the interaction of the solar wind with the ionosphere. Considerable ionizations can be observed in Venus' nightside ionosphere, which are unexpected for the Martian nightside ionosphere in most cases. |
| WOS关键词 | solar-wind interaction ; dayside ionosphere ; nightside ionosphere ; 2-dimensional model ; magnetic-fields ; atmosphere ; terminator ; ionopause ; plasma ; holes |
| WOS研究方向 | Astronomy & Astrophysics |
| 项目编号 | 11103063 ; 11178008 ; 2015CB857101 ; PSL15_04 |
| 语种 | 英语 |
| WOS记录号 | WOS:000360555100012 |
| 资助机构 | National Natural Science Foundation of China ; National Key Basic Research Program of China ; Key Laboratory of Planetary Sciences, Chinese Academy of Sciences |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1613]  |
| 专题 | 新疆天文台_110米口径全可动射电望远镜（SmART）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题1：大样本射电天体的观测和前沿问题研究 |
| 通讯作者 | Zhang, Su-Jun |
| 作者单位 | 1.Key Laboratory of Planetary Sciences, Chinese Academy of Sciences, Shanghai, 200030, China 2.RMIT University,Melbourne, Victoria 3001, Australia 3.School of Information Science and Engineering, Southeast University, Nanjing 210096, China 4.Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories,Chinese Academy of Sciences, Beijing 100012, China 5.University of Chinese Academy of Sciences, Beijing 100049, China 6.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China |
| 推荐引用方式 GB/T 7714 | Chen, Cong-Yan,Zhang, Su-Jun,Jian, Nian-Chuan,et al. Ionospheric inversion of the Venus Express radio occultation data observed by Shanghai 25 m and New Norcia 35 m antennas[J]. Research in Astronomy and Astrophysics,2015,15(9):1559-1570. |
| APA | Chen, Cong-Yan,Zhang, Su-Jun,Jian, Nian-Chuan,Ping, Jin-Song,Zhang, Ke-Fei,&Li, Jin-Ling.(2015).Ionospheric inversion of the Venus Express radio occultation data observed by Shanghai 25 m and New Norcia 35 m antennas.Research in Astronomy and Astrophysics,15(9),1559-1570. |
| MLA | Chen, Cong-Yan,et al."Ionospheric inversion of the Venus Express radio occultation data observed by Shanghai 25 m and New Norcia 35 m antennas".Research in Astronomy and Astrophysics 15.9(2015):1559-1570. |
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来源：新疆天文台
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