Joint Observation of a Rotational Discontinuity by Tianwen‐1 and MAVEN at Mars
Year: 2025
Type: article
Abstract: The solar wind plays a crucial role in the evolution of planets in the solar system, particularly Mars. Mars has no global intrinsic magnetic field, leading the solar wind to interact directly with the Martian ionosphere and atmosphere. However, there are many strong‐current magnetic structures in the solar wind, which can directly affect the Martian induced magnetosphere and plasma environment. Using Tianwen‐1 and MAVEN data, we present the first joint observation of a rotational discontinuity (RD) at Mars. The thickness of the RD is about 9 ion inertial lengths, and the tangential current density at the RD's center reaches ∼12 nA/m 2 . Based on the two‐spacecraft joint analyses, we find that the RD may be a curved structure. These results can improve our understanding of Martian space environment.
Source: Geophysical Research Letters
DOI: 10.1029/2024gl114035
Authors: Z. Z. Guo, H. S. Fu, J. B. Cao, Y. M. Wang, M. Ge, T. Y. Zhou, W. D. Fu, W. Z. Zhang, C. Q. Wang
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,190
Award: G1512823178
OpenAlex ID: W4408510376