A5078018817- Geomagnetism and Paleomagnetism Studies
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Planetary Science and Exploration
- Solar and Space Plasma Dynamics
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Fault Detection and Control Systems
- Radiation Effects in Electronics
- Particle accelerators and beam dynamics
- Magnetic Field Sensors Techniques
Massachusetts Institute of Technology
2020-2024
University of California, Los Angeles
2012-2018
Planetary Science Institute
2012-2015
Abstract Paleomagnetic measurements of meteorites indicate that magnetic fields existed in the inner solar nebula capable driving accretion at rates similar to those observed for young stellar objects with protoplanetary disks. However, field strength system beyond ∼7 astronomical units (AU) and its role remain poorly constrained. Returned samples from asteroid (162173) Ryugu offer possibility determining nebular intensity this distal region. Here, we report paleomagnetic studies three...
Abstract Energetic charged particles trapped in planetary radiation belts are hazardous to spacecraft. Planned missions iron‐rich asteroids with possible strong remanent magnetic fields require an assessment of energies. Using laboratory measurements iron meteorites, we estimate the largest asteroid moment. Although weak compared moments dynamos, small body size may yield surface fields. We use hybrid simulations confirm formation a magnetosphere extended quasi‐dipolar region. However, short...
Psyche is a Discovery mission that will visit the asteroid (16) to determine if it metallic core of once larger differentiated body or otherwise was formed from accretion unmelted metal-rich material. The spacecraft launch in August 2022 and arrive at January 2026. carry three science instruments: gamma ray neutron spectrometer, magnetometer, multispectral imager. Additionally, host Deep Space Optical Communications payload, which technology demonstration not required meet Psyche's...
Abstract We investigate the propagation of Pi2 period pulsations from their origin in plasma sheet through braking region, region where fast flows are slowed as they approach inner edge sheet. Our is to use both University California, Los Angeles (UCLA) and Lyon‐Fedder‐Mobarry (LFM) global magnetohydrodynamic (MHD) computer codes simulate Earth's magnetosphere during a substorm that occurred on 14 September 2004 when were observed. two different MHD models order test robustness our...
Abstract Accurate measurements of ambient planetary and interplanetary magnetic fields using spacecraft magnetometers typically require accounting for interfering generated by the flight system (FS). The most common method removing FS-generated time-variable is narrow-band low-pass filtering field data in frequency domain. However, if fluctuations contain frequencies overlapping those FS field, it can be difficult to construct a filter that will not affect both signals. Here we present an...
Using a global magnetohydrodynamic (MHD) simulation of the magnetosphere during disturbed interval on 14 September 2004, we have investigated fluctuations in plasma properties magnetotail Pi2 range and their relationship to dipolarization fronts (DFs). Results from MHD indicate that this event is very active with variable convection disorder tail scales as small ∼1 R E . DFs are observed at leading edge fast earthward flows originate reconnection regions form between ∼−15 −30 tail. period...
The Psyche mission is a journey to unique metal asteroid of the same name, (16) Psyche, orbiting Sun between Mars and Jupiter. launched October 13 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> , 2023 from Kennedy Space Center. seeks answer questions about formation planets explore what may be an exposed nickel-iron core early planetesimal, similar one hidden at center our own Earth. led by Arizona State University. NASA's Jet...
The asteroid (16) Psyche is the target of NASA mission, where magnetometer one three science instruments on board. Its purpose to prove whether formed from core a differentiated planetesimal. will measure magnetic field at different distances in order detect any remanent magnetization, moment larger than 2&#215;10^14 Am2 could imply that body once generated dynamo, and therefore as an igneous differentiation.The spacecraft carries two three-axis fluxgate magnetometers mounted fixed boom...