Ramiz A. Qudsi, Mike Richardson, Haley DeWeese, Bennett A. Maruca
Dept. of Phys. and Astronomy, University of Delaware, DE, USA Â
28 December, 2020
ICPSA-2020
What We Still Don’t Know About Solar-Wind Structure
Over 50 years of
single-spacecraft
magnetic-field measurementsÂ
Power spectra of
in-situ magnetic field
Clear indications of multi-scale structure
What is the actual, 3D magnetic structure of the solar wind?
Mariner 2
Parker Solar Probe
Coleman (ApJ, 1968)
Bale et al. (Nature, 2019)
1. Launch a large number of small spacecraft
2. Arrange them in specific configuration
3. Record magnetic field at each spacecraft position
4. Carry out interpolation on the recorded data
5. Generate a full 3-D image of interplanetary magnetic field
Spacecraft
1. Identify the most suitable algorithm for extrapolation between data points
2. Select the most appropriate kernel/combination of kernels
Constant
Linear
RBF
Matern
3. Identify the least number of spacecraft needed to get reproduce relevant structure
3. Identify the least number of spacecraft needed to get reproduce relevant structure
1. Identify the most suitable algorithm for extrapolation between data points
2. Select the most appropriate kernel/combination of kernels
What's next?
Explore the impact of relative spacecraft separation and arrangement
Incorporate the zero divergence condition on magnetic field
Explore other alternative algorithms