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\begin{document}

\title{Examining the magnetic geometry of magnetic flux rope: from the view of
single-point analysis}



\author[1]{Zhaojin Rong}%
\author[1]{Chi Zhang}%
\author[2]{Chao Shen}%
\author[3]{Lucy Klinger}%
\author[1]{Jiawei Gao}%
\author[4]{James A. Slavin}%
\author[5]{Yongcun Zhang}%
\author[6]{Yong Wei}%
\author[7]{Weixing Wan}%
\affil[1]{Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences}%
\affil[2]{Harbin Institute of Technology}%
\affil[3]{Beijing International Center for Mathematical Research, Peking University}%
\affil[4]{University of Michigan-Ann Arbor}%
\affil[5]{State Key Laboratory for Space Weather,National Space Science Center, Chinese Academy of Sciences}%
\affil[6]{Institute of Geology and Geophysics, Chinese Academy of Sciences}%
\affil[7]{Institute of Geology and Geophysics,Chinese Academy of Sciences}%


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  \date{May 24, 2024}


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\begin{abstract}
With Magnetospheric Multiscale Mission (MMS) observation of a magnetic
flux rope of ion scale in magnetopause, we apply the single-point method
presented by Rong et al., {[}2013{]} to study the magnetic field
structure of flux rope. The calculated geometric parameters, e.g. axis
orientation, helical handedness, current density, curvature radius, and
boundaries of flux rope show well consistency with those derived from
the multi-point methods. Thus, the single-point method of Rong et al.,
{[}2013{]} is reliable for studying the interior field structure of
magnetic flux rope and could be applied widely to single-point
spacecraft missions that examine the dynamics of flux rope.%
\end{abstract}%



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