A5041443346- Planetary Science and Exploration
- Astro and Planetary Science
- Solar and Space Plasma Dynamics
- Advanced SAR Imaging Techniques
- Fault Detection and Control Systems
- Space Science and Extraterrestrial Life
- Geophysics and Gravity Measurements
- Global Energy and Sustainability Research
- Geomagnetism and Paleomagnetism Studies
- Advanced Sensor and Control Systems
- Laser-induced spectroscopy and plasma
- Stellar, planetary, and galactic studies
- Infrared Target Detection Methodologies
- Nuclear Physics and Applications
- Space Exploration and Technology
- Ionosphere and magnetosphere dynamics
University of Chinese Academy of Sciences
2021-2024
National Space Science Center
2021-2024
Chinese Academy of Sciences
2021-2024
Space Engineering University
2021-2024
Chinese Academy of Meteorological Sciences
2023
Abstract This study delves into a Pick‐Up Ion (PUI) event captured by the Mars and Neutral Particle Analyzer aboard Tianwen‐1, revealing faster acceleration than expected within Martian magnetosheath. suggests presence of convection electric field considerably stronger that typically observed in solar wind. Through Magnetohydrodynamic simulation, we identified two regions intensified fields inner magnetosheath, prominently manifested at mid to high zenith angles (SZA = 40°–70°) X‐Z plane...
The Mars Ion and Neutral Particle Analyzer (MINPA) is one of the three scientific instruments onboard Tianwen-1 orbiter to investigate Martian space environment. During Tianwen-1's transfer orbit Mars, MINPA was switched on measure solar wind ions. Here, we present first results observations in wind. cruise, nearly half ion field-of-view (FOV) blocked by lander capsule; thus only solar-wind ions with azimuthal speeds pointing towards unblocked FOV sectors could be detected. We perform a...
Abstract Combining the upstream solar wind observations measured by Mars Atmosphere and Volatile Evolution (MAVEN), Advanced Composition Explorer(ACE) Deep Space Climate Observatory (DSCOVR) from October 2014 to April 2021, we investigate statistical properties of background at Earth. By applying an operational prediction system (Wang et al., 2018, https://doi.org/10.1051/swsc/2018025 ) in Weather Prediction Center (SEPC), simulate conditions carry out a comparative analysis with study our...
An algorithm has been developed to invert the solar wind parameters from hydrogen energetic neutral atom (H-ENA) measured in near-Mars space. Supposing H-ENA is produced by change exchange collision between protons that originated and neutrals exosphere, an model established based on magnetohydrodynamic (MHD) simulation of interaction with Mars, study characteristics. It revealed H-ENAs are high-speed, low-temperature beams, just like wind, while magnetosheath slower hotter, broader energy...
The Mars Ion and Neutral Particle Analyzer (MINPA), one of the three scientific payloads onboard Tianwen-1 orbiter, was designed to measure ions energetic neutral atoms (ENAs) at Mars. From November 2021, MINPA started collect data around Here, we present MINPA's first results solar-wind ENAs, which are produced through charge exchange process between solar wind hydrogen Martian exosphere. We perform a comprehensive comparison inflight ENA ground calibration understand energy angular...
The pitch angle distributions of ions and electrons can be affected by various processes; thus, they serve as an important indicator the physical mechanisms driving dynamics space plasmas. From observations from Mars Ion Neutral Particle Analyzer onboard Tianwen-1 orbiter, we calculated protons in Martian induced magnetosphere using information magnetohydrodynamically simulated magnetic field, statistically analyzed spatial occurrence pattern different types distributions. Even though no...
The Martian magnetotail serves as an important channel for the escape of planetary ions, with abundant dynamic processes. After Tianwen-1 successfully entered scientific orbit around Mars, sun is becoming increasingly active. With orbital apoapsis ~10,760 km, completed its first phase from March to July 2022, providing a good opportunity investigate response far interplanetary coronal mass ejections (ICMEs). We made preliminary analysis tail under ICME impact on 16 May monitoring and Mars...
The Mars Ion and Neutral Particle Analyzer (MINPA), one of the seven scientific payloads onboard Tianwen-1 orbiter, was designed to measure ions energetic neutral atoms (ENAs) at Mars. Here, we present MINPA's first results solar-wind ENAs, which are produced through charge exchange process between solar wind hydrogen the Martian exosphere. We perform a comprehensive comparison inflight ENA data ground calibration understand energy angular distributions signals by...
The Mars Ion and Neutral Particle Analyzer (MINPA), one of the seven scientific payloads onboard Tianwen-1 orbiter, was specifically designed to investigate interaction between solar wind by analyzing ions energetic neutral atoms (ENAs). Commencing its data collection in November 2021, MINPA successfully completed first far-magnetotail survey during summer 2022. Our presentation will provide a comprehensive overview MINPA's in-flight operations initial findings. Regarding ENA observations,...
Interplanetary coronal mass ejections (ICMEs) are solar transients that have significant effects on the Martian space environment. The simultaneous spacecraft observations from Tianwen-1 and Mars Atmosphere Volatile Evolution (MAVEN) used to study planetary ion escape for a dramatic ICME. MAVEN passes through upstream wind, +E hemisphere, -E hemisphere in one orbital period at 20:00 UT -24:00 2022 April 24. During this period, interplanetary magnetic field (IMF) remained stable dominated by...
An algorithm has been developed to invert the solar wind parameters from hydrogen energetic neutral atom (H-ENA) measured in near-Mars space. Supposing H-ENA is produced by change exchange collision between protons that originated and neutrals exosphere, an model established based on magnetohydrodynamic (MHD) simulation of interaction with Mars, study characteristics. It revealed H-ENAs are high-speed, low-temperature beams, just like wind, while magnetosheath slower hotter, broader energy...
Since November 2021, Tianwen-1 started its scientific instrument Mars Ion and Neutral Particle Analyzer (MINPA) to detect the particles in Martian space. To evaluate reliability of plasma parameters from MINPA measurements, this study, we analyze reduce background signal (or noise) appearing data, then calculate moments based on noise-reduced data. It is found that velocity highly correlated with Solar Wind (SWIA) onboard MAVEN spacecraft, indicating good reliability, temperature also SWIA...
The Mars Ion and Neutral Particle Analyzer (MINPA) onboard Tianwen-1 aims to study the interaction between solar wind via in situ ion measurement energetic neutral atom imaging. Despite efforts for Ultra-Violet suppression MINPA design, 0.48% of observations from November 2021 July 2022 were identified as UV-contaminated. UV emissions primarily penetrate into instrument through ENA entrance. Statistically, distribution contamination phase space typically spans 3 4 azimuth sectors. is...