A Comparative Study of Ionospheric Response to Solar Flares at Earth, Venus, and Mars
A Comparative Study of Ionospheric Response to Solar Flares at Earth, Venus, and Mars
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地球、金星和火星电离层对太阳耀斑响应的比较研究
DOI：
10.3847/1538-4357/ac92ff
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发表时间：
2022-10
期刊：
影响因子：
--
通讯作者：
Lei Jiuhou
中科院分区：
文献类型：
--
作者：
Yan Maodong;Dang Tong;Cao Yu-Tian;Cui Jun;Zhang Binzheng;Liu Zerui;Lei Jiuhou
人们普遍认识到，在太阳耀斑期间，地球的电离层对增强的x射线和极紫外线辐射有很大的反应。然而，对不同类地行星间电离层响应的比较研究却很少受到重视。在这项工作中，我们利用自一致的行星电离层模型研究了地球、金星和火星电离层对2017年9月6日太阳耀斑的响应。结果表明，在电离层相对较低的区域，电子密度显著增加，其最大相对变化在不同行星之间存在较大差异。地球和金星的离子温度对耀斑有相似的反应，但与火星的不同，这与背景大气条件有关。对于X9.3耀斑的电子温度响应，在地球上它以最大250k的幅度增加，相比之下，在金星和火星上分别减少了~ 45k和~ 40k。在太阳耀斑期间，三颗行星上的垂直等离子体速度都有所增强。结果，上升通量在地球800公里处增加2.16 × 1012 m - 2 s - 1，在金星和火星400公里处增加3.79 × 1010 m - 2 s - 1, 8.45 × 109 m - 2 s - 1。这是第一次对金星和火星上耀斑引起的向上等离子体流增强的自一致模拟。
It has been widely recognized that the ionosphere of the terrestrial planet responds greatly to the enhanced X-ray and extreme ultraviolet radiation during solar flares. However, little attention has been paid to the comparative study of the ionospheric response between different Earth-like planets. In this work, we investigate the responses of the ionospheres of Earth, Venus, and Mars to the 2017 September 6 solar flares, with self-consistent planetary ionospheric models. The result shows that the electron density increases significantly in the relatively low ionosphere region, and its maximum relative change displays profound differences between planets. The ion temperatures at Earth and Venus share a similar response to flares, but differ from those at Mars, which relates to the background atmospheric conditions. For the electron temperature response to the X9.3 flare, at Earth it increases with a maximum magnitude of 250 K, in contrast to the decrease of ∼45 K at Venus and ∼40 K at Mars. The vertical plasma velocity at all three planets exhibits enhancement during solar flares. As a result, the upward flux increases by 2.16 × 1012 m−2 s−1 at 800 km of Earth, 3.79 × 1010 m−2 s−1, and 8.45 × 109 m−2 s−1 at 400 km of Venus and Mars. This is the first self-consistent simulation of the flare-induced enhancement of upward plasma flow at Venus and Mars.
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DOI：
10.5636/jgg.49.123
发表时间：
1997-02
期刊：
Journal of geomagnetism and geoelectricity
影响因子：
--
作者：
C. Barton
通讯作者：
C. Barton
影响因子：
3.2
作者：
C. Gray;N. Chanover;T. Slanger;K. Molaverdikhani
通讯作者：
C. Gray;N. Chanover;T. Slanger;K. Molaverdikhani
影响因子：
2.6
作者：
S. Todorova;T. Hobiger;H. Schuh
通讯作者：
S. Todorova;T. Hobiger;H. Schuh
影响因子：
56.9
作者：
Mendillo, M;Withers, P;Reinisch, B
通讯作者：
Reinisch, B
影响因子：
2.4
作者：
Y. Futaana;S. Barabash;M. Yamauchi;S. McKenna-Lawlor;R. Lundin;J. Luhmann;D. Brain;E. Carlsson;J. Sauvaud;J. Winningham;R. Frahm;P. Wurz;M. Holmström;H. Gunell;E. Kallio;Wolfgang Baumjohann;H. Lammer;J. Sharber;K. Hsieh;H. Andersson;A. Grigoriev;K. Brinkfeldt;H. Nilsson;K. Asamura;T. Zhang;A. Coates;D. Linder;D. Kataria;C. Curtis;B. Sandel;A. Fedorov;C. Mazelle;J. Thocaven;M. Grande;H. Koskinen;T. Sales;W. Schmidt;P. Riihela;J. Kozyra;N. Krupp;J. Woch;M. Fränz;E. Dubinin;S. Orsini;R. Cerulli-Irelli;A. Mura;A. Milillo;M. Maggi;E. Roelof;P. Brandt;K. Szego;J. Scherrer;P. Bochsler
通讯作者：
Y. Futaana;S. Barabash;M. Yamauchi;S. McKenna-Lawlor;R. Lundin;J. Luhmann;D. Brain;E. Carlsson;J. Sauvaud;J. Winningham;R. Frahm;P. Wurz;M. Holmström;H. Gunell;E. Kallio;Wolfgang Baumjohann;H. Lammer;J. Sharber;K. Hsieh;H. Andersson;A. Grigoriev;K. Brinkfeldt;H. Nilsson;K. Asamura;T. Zhang;A. Coates;D. Linder;D. Kataria;C. Curtis;B. Sandel;A. Fedorov;C. Mazelle;J. Thocaven;M. Grande;H. Koskinen;T. Sales;W. Schmidt;P. Riihela;J. Kozyra;N. Krupp;J. Woch;M. Fränz;E. Dubinin;S. Orsini;R. Cerulli-Irelli;A. Mura;A. Milillo;M. Maggi;E. Roelof;P. Brandt;K. Szego;J. Scherrer;P. Bochsler