A5037562896- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Solar Radiation and Photovoltaics
- Geophysics and Gravity Measurements
- Astro and Planetary Science
- Solar Thermal and Photovoltaic Systems
- Aerodynamics and Fluid Dynamics Research
- Planetary Science and Exploration
- Stellar, planetary, and galactic studies
- Photovoltaic System Optimization Techniques
- Earthquake Detection and Analysis
University of Michigan
2020-2023
We present a technique for deriving the temperature anisotropy of solar wind protons observed by Parker Solar Probe (PSP) mission in near-Sun wind. The radial proton measured Wind Electrons, Alphas, and Protons (SWEAP) Cup is compared with orientation local magnetic field FIELDS fluxgate magnetometer, temperatures parallel perpendicular to are extracted. This procedure applied different data products, results optimum timescales selection trends uncertainty method identified. find that...
Aims. Solar Orbiter launched in February 2020 with the goal of revealing connections between Sun’s interior, atmosphere, and heliosphere. The Heavy Ion Sensor (HIS) is a time-of-flight ion mass spectrometer dedicated to measuring heavy ions solar wind. Methods. We present an overview first measurements composition from HIS, reviewing methods used transform spectra obtained on board into scientific data products examining two wind case studies as well statistical properties observed by HIS....
Abstract Ion precipitation onto Mercury's surface through its magnetospheric cusps acts as a source of planetary atoms to both exosphere and magnetosphere. Through the process ion sputtering, solar wind ions (∼95% protons) impact regolith liberate material, mostly neutral atoms. We have identified 2760 northern cusp crossings throughout MErcury Surface, Space ENvironment, GEochemistry Ranging (MESSENGER) mission, based on enhancements in proton flux observed by Fast Imaging Plasma...
The slow solar wind is typically characterized as having low Alfv\'enicity. However, Parker Solar Probe (PSP) observed predominately Alfv\'enic during several of its initial encounters. From first encounter observations, about 55.3\% the inside 0.25 au highly ($|\sigma_C| > 0.7$) at current minimum, which much higher than fraction quiet-Sun-associated maximum 1 au. Intervals with different Alfv\'enicities seem to show similar plasma characteristics and temperature anisotropy distributions....
Ion mass-per-charge and shock geometry determine both injection the number of times a charged particle is reflected across shock. As such, they govern acceleration heating at Solar Obiter’s Heavy Sensor (HIS) observed quasi-parallel CME-driven on March 11, 2022. HIS has sufficient time, mass, charge resolution that it measured individual distributions iron 8+ through 12+ variable timescale 2 to 5 minutes. Using these 1D velocity distribution functions (VDFs), we report thermal...