Sudong Xiao
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View article: Bow shock oscillations of Mars under weakly disturbed solar wind conditions
Bow shock oscillations of Mars under weakly disturbed solar wind conditions Open
Bow shock, where the solar wind first encounters the Martian environment, reflects the complex interplay between the solar wind and Martian upper atmosphere and crustal fields. However, a comprehensive understanding of Martian bow shock dy…
View article: The Influence of Interplanetary Magnetic Field Orientations on the Martian Bow Shock and Magnetosheath Magnetic Field
The Influence of Interplanetary Magnetic Field Orientations on the Martian Bow Shock and Magnetosheath Magnetic Field Open
Unlike Earth, Mars lacks a global intrinsic magnetic field but has regional crustal magnetic fields concentrated in its southern hemisphere. This unique configuration leads to distinctive interactions with the solar wind. In this study, we…
View article: Statistical Study on the Solar Wind Turbulence Spectra Upstream of Mars
Statistical Study on the Solar Wind Turbulence Spectra Upstream of Mars Open
We statistically analyze the power spectral density (PSD) of magnetic field turbulence in the upstream solar wind of the Martian bow shock by investigating the data from Tianwen-1 and Mars Atmosphere and Volatile Evolution (MAVEN) during 2…
View article: Unveiling the Global Characteristics of Turbulence in the Venusian Space Environment
Unveiling the Global Characteristics of Turbulence in the Venusian Space Environment Open
Turbulence plays a crucial role in energy transfer from large to small scales in solar wind‐Venus interaction. Observations have identified magnetic field fluctuations and turbulence in the Venusian space environment. However, due to limit…
View article: Statistical properties of hot flow anomalies around Mars
Statistical properties of hot flow anomalies around Mars Open
Hot flow anomalies (HFAs) are not only a terrestrial phenomenon, but also a solar-system-wide phenomenon, one that can cause significant perturbations in planetary magnetospheres and ionospheres. In this study, based on the observations of…
View article: Properties of Solar Wind Current Sheets in the Martian Space Environment
Properties of Solar Wind Current Sheets in the Martian Space Environment Open
Transient current sheets (CSs) are common magnetic structures in the solar wind that can significantly disturb the planetary space environment and cause space weather phenomena. This study focuses on their properties in the Martian space e…
View article: Magnetic Field Structures in the Near-terminator Induced Magnetospheres of Venus and Mars
Magnetic Field Structures in the Near-terminator Induced Magnetospheres of Venus and Mars Open
Venus and Mars, our two neighboring planets, have no global intrinsic magnetic fields, and the induced magnetospheres are formed in their solar wind interactions through mass loading of magnetic flux tubes carried by the solar wind and dra…
View article: Statistical study of magnetic holes in the upstream region of Mercury’s bow shock
Statistical study of magnetic holes in the upstream region of Mercury’s bow shock Open
Magnetic holes are magnetic depression structures that exist widely in many plasma environments. The magnetic holes with durations of >1 s in the solar wind at Mercury’s orbit have drawn much attention, but the properties of the magnetic h…
View article: Martian Bow Shock Oscillations Driven by Solar Wind Variations: Simultaneous Observations From Tianwen‐1 and MAVEN
Martian Bow Shock Oscillations Driven by Solar Wind Variations: Simultaneous Observations From Tianwen‐1 and MAVEN Open
The Martian bow shock stands as the first defense against the solar wind and shapes the Martian magnetosphere. Previous studies showed the correlation between the Martian bow shock location and solar wind parameters. Here we present direct…
View article: Tianwen-1 and MAVEN Observations of the Response of Mars to an Interplanetary Coronal Mass Ejection
Tianwen-1 and MAVEN Observations of the Response of Mars to an Interplanetary Coronal Mass Ejection Open
Interplanetary coronal mass ejections (ICMEs) are solar transients that have significant effects on the upper atmosphere and ionosphere of Mars. The simultaneous spacecraft observations from Tianwen-1/MOMAG in solar wind and multiple instr…
View article: The Dynamic Evolution of Multipoint Interplanetary Coronal Mass Ejections Observed with BepiColombo, Tianwen-1, and MAVEN
The Dynamic Evolution of Multipoint Interplanetary Coronal Mass Ejections Observed with BepiColombo, Tianwen-1, and MAVEN Open
We present two multipoint interplanetary coronal mass ejections (ICMEs) detected by the Tianwen-1 and Mars Atmosphere and Volatile Evolution spacecraft at Mars and the BepiColombo (0.56 au ∼0.67 au) upstream of Mars from 2021 December 5 to…
View article: Interplanetary Coronal Mass Ejections and Stream Interaction Regions Observed by Tianwen-1 and MAVEN at Mars
Interplanetary Coronal Mass Ejections and Stream Interaction Regions Observed by Tianwen-1 and MAVEN at Mars Open
The Tianwen-1 spacecraft is China's first Mars exploration mission. The Mars Orbiter Magnetometer (MOMAG) is a scientific instrument on board the Tianwen-1 mission that is designed to study magnetic fields at Mars, including the solar wind…
View article: Unusual Martian Foreshock Waves Triggered by a Solar Wind Stream Interaction Region
Unusual Martian Foreshock Waves Triggered by a Solar Wind Stream Interaction Region Open
Planetary bow shocks noncollisionally dissipate the incident bulk flow energy of solar wind into some other forms. To what extent and how solar wind disturbances affect the energy dissipation processes at the bow shocks on different planet…
View article: Interplanetary Coronal Mass Ejections and Stream Interaction Regions observed by Tianwen-1 and Maven at Mars
Interplanetary Coronal Mass Ejections and Stream Interaction Regions observed by Tianwen-1 and Maven at Mars Open
Tianwen-1 spacecraft (Wan et al. 2020) is China's first Mars exploration mission. The Mars Orbiter Magnetometer (MOMAG) is a scientific instrument aboard the Tianwen-1 mission that is designed to study magnetic fields at Mars, including th…
View article: A New Tool for Understanding the Solar Wind–Venus Interaction: Three-dimensional Multifluid MHD Model
A New Tool for Understanding the Solar Wind–Venus Interaction: Three-dimensional Multifluid MHD Model Open
In this paper, we present a new tool to investigate the interaction of the solar wind with Venus with the approach of a global multifluid magnetohydrodynamics (MHD) model. The continuity, momentum, and energy equations for H + , O + , …
View article: Statistical Analysis of Lunar 1 Hz Waves Using ARTEMIS Observations
Statistical Analysis of Lunar 1 Hz Waves Using ARTEMIS Observations Open
Like 1 Hz waves occurring in the upstream of various celestial bodies in the solar system, 1 Hz narrowband whistler-mode waves are often observed around the Moon. However, the wave properties have not been thoroughly investigated, which ma…
View article: In-flight Calibration of the Magnetometer on the Mars Orbiter of Tianwen-1
In-flight Calibration of the Magnetometer on the Mars Orbiter of Tianwen-1 Open
Mars Orbiter Magnetometer (MOMAG) is one of seven science payloads onboard Tianwen-1's orbiter. Unlike most of the satellites, Tianwen-1's orbiter is not magnetically cleaned, and the boom where placed the magnetometer's sensors is not lon…
View article: The Mars Orbiter Magnetometer of Tianwen-1: In-flight Performance and First Science Results
The Mars Orbiter Magnetometer of Tianwen-1: In-flight Performance and First Science Results Open
Mars Orbiter MAGnetometer (MOMAG) is a scientifc instrument onboard the orbiter of China's first mission for Mars -- Tianwen-1. It started to routinely measure the magnetic field from the solar wind to magnetic pile-up region surrounding M…
View article: Responses of the field-aligned currents in the plasma sheet boundary layer to a geomagnetic storm
Responses of the field-aligned currents in the plasma sheet boundary layer to a geomagnetic storm Open
Geomagnetic storms can result in large magnetic field disturbances and intense currents in the magnetosphere and even on the ground. As an important medium of momentum and energy transport among the solar wind, magnetosphere, and ionospher…
View article: Statistical Analysis of Lunar 1 Hz Waves Using ARTEMIS Observations
Statistical Analysis of Lunar 1 Hz Waves Using ARTEMIS Observations Open
Like 1 Hz waves occurring in the upstream of various celestial bodies in the solar system, 1 Hz narrowband whistler-mode waves are often observed around the Moon. However, wave properties have not been thoroughly investigated, which makes …
View article: The Mars orbiter magnetometer of Tianwen-1: in-flight performance and first science results
The Mars orbiter magnetometer of Tianwen-1: in-flight performance and first science results Open
The Mars Orbiter MAGnetometer (MOMAG) is a scientific instrument onboard the orbiter of China’s first mission for Mars — Tianwen-1. Since November 13, 2021, it has been recording magnetic field data from the solar wind to the magnetic pile…
View article: Electron-scale Magnetic Peaks Upstream of Mercury’s Bow Shock: MESSENGER Observations
Electron-scale Magnetic Peaks Upstream of Mercury’s Bow Shock: MESSENGER Observations Open
Electron-scale magnetic peaks (ESMPs) with spatial sizes less than one local ion gyroradius have been recently revealed to exist in the terrestrial magnetosheath and solar wind at 1 au. Whether they widely exist in the astrophysical plasma…
View article: Magnetic Fluctuations Associated With Small-Scale Magnetic Holes in the Martian Magnetosheath
Magnetic Fluctuations Associated With Small-Scale Magnetic Holes in the Martian Magnetosheath Open
Small-scale magnetic holes are common magnetic structures with a spatial scale always smaller than one thermal proton gyroradius ( ) in the turbulent planetary magnetosheath. However, the contribution of small-scale MHs to dissipating ene…
View article: Oxygen Ion Escape at Venus Associated With Three‐Dimensional Kelvin‐Helmholtz Instability
Oxygen Ion Escape at Venus Associated With Three‐Dimensional Kelvin‐Helmholtz Instability Open
How oxygens escape from Venus has long been a fundamental but controversial topic in the planetary research. Among various key mechanisms, the Kelvin‐Helmholtz instability (KHI) has been suggested to play an important role in the oxygen io…
View article: A Case Study of the Induced Magnetosphere Boundary at the Martian Subsolar Region
A Case Study of the Induced Magnetosphere Boundary at the Martian Subsolar Region Open
One Martian induced magnetosphere boundary (IMB) crossing at the subsolar region is analyzed here with multiple instruments on board MAVEN. Properties of the magnetic field and particles around the IMB are evaluated. We find different tren…
View article: Statistical Properties of Electron-scale Magnetic Peaks in the Solar Wind at 1 au
Statistical Properties of Electron-scale Magnetic Peaks in the Solar Wind at 1 au Open
Energy cascade from magnetohydrodynamic to kinetic scales can create many coherent structures in the turbulent astrophysical plasma environment, such as magnetic holes and magnetic peaks. Knowing the properties of each coherent structure i…
View article: Statistical Properties of Small-scale Linear Magnetic Holes in the Martian Magnetosheath
Statistical Properties of Small-scale Linear Magnetic Holes in the Martian Magnetosheath Open
The small-scale linear magnetic hole (LMH) is a magnetic dip with a size less than or on the order of ρ i (proton gyroradius), which may contribute to turbulence properties in the solar wind and other astrophysical plasmas. Based on one-mo…
View article: Reflection of low-frequency fast magnetosonic waves at the local two-ion cutoff frequency: observation in the plasmasphere
Reflection of low-frequency fast magnetosonic waves at the local two-ion cutoff frequency: observation in the plasmasphere Open
We investigate the reflection of low-harmonic fast magnetosonic (MS) waves at the local two-ion cutoff frequency (fcutHe+). By comparing the wave signals of the two Van Allen Probes satellites, a distinct boundary where wave energies canno…
View article: Foreshock as a Source Region of Electron-scale Magnetic Holes in the Solar Wind at 1 au
Foreshock as a Source Region of Electron-scale Magnetic Holes in the Solar Wind at 1 au Open
Electron-scale magnetic holes (ESMHs) can dissipate energy and transport electrons in astrophysical plasmas. They are often observed in the solar wind at 1 au, but whether they are locally generated remains unclear. Here we investigate the…
View article: Electron-scale Magnetic Peaks Upstream of the Terrestrial Bow Shock Observed by the Magnetospheric Multiscale Mission
Electron-scale Magnetic Peaks Upstream of the Terrestrial Bow Shock Observed by the Magnetospheric Multiscale Mission Open
The solar wind has rich wave activity and various magnetic structures. Here we report on a new type of magnetic structure in the solar wind using the unprecedented high temporal resolution data from the Magnetospheric Multiscale Mission. W…