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Chinese Journal of Space Science ›› 2020, Vol. 40 ›› Issue (6): 990-999.doi: 10.11728/cjss2020.06.990

• Research Articles • Previous Articles    

Comparative Study of Bow Shock Models

ZHOU Yue, Lü Jianyong, WANG Ming, YUAN Huanzhi   

  1. Institute of Space Weather, Nanjing University of Information Science and Technology, Nanjing 210044
  • Received:2019-04-04 Revised:2019-10-20 Published:2020-12-09

Abstract: The Earth's bow shock is created by the interaction of the supersonic solar wind and the magnetospheric obstacle. The bow shock is a very important interface. When the satellites pass through the bow shock, its environment will change significantly. In catastrophic space weather conditions, it will cause great damage to the satellites. Therefore, investigating the shape of the bow shock is of great significance for space weather forecast and the satellite environment monitoring. In the past few decades, many bow shock models have been built to study the relationship between solar wind and bow shock. This paper compares the Peredo model, Merka model, Chao model, and Lu model under both extreme solar wind conditions (including large dipole tilt angle) and quiet solar wind conditions. Results show that during the extreme solar wind conditions and quiet solar wind conditions, the prediction of the Peredo model has a large deviation. Merka model is not accurate during the extreme solar wind conditions. Chao model can accurately describe the bow shock under quiet solar wind conditions but with a large deviation for large dipole tilt angle conditions. Lu model can accurately descry be bow shock under both extreme solar wind conditions and quiet solar wind conditions.

Key words: Bow shock model, Dipole tilt angle, Extreme solar wind conditions

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