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New Horizons Flyby Modeling Challenge
Preliminary Multi-Scale Fluid-Kinetic Simulation Suite (MS-FLUKSS) 3D MHD results from Tae Kim, Nikolai Pogorelov and Gary Zank

Line plots comparing the model predictions with the New Horizons measurments for solar wind and pick-up proton density, radial velocity, Bphi, temperature, Z2 (total turbulent energy density in turbulent magnetic and velocity fluctuations), correlation length lambda and Sigma_c for the year 2015. The model speed, density, and temperature are compared with New Horizons SWAP data (Elliott et al. 2016, ApJS, 223, 19; McComas et al. 2017, ApJS, 233, 8). Also shown are 3D plots of the density (scaled to 1 AU values by R^2) NxR2 (/cc), Vr (km/s), and Bphi sign (red: positive, blue: negative) at the time of the closest approach to Pluto. The 3D plots show the parameters on the equatorial plane and on a plane formed by the solar rotation axis (Z) and the Sun-Pluto line.










This model is a 3D, time-dependent, MHD-plasma/fluid-neutral code (e.g., Pogorelov et al. 2008, 2009; Kim et al. 2016) based on the Multi-scale Fluid-kinetic Simulation Suite (MS-FLUKSS; see Pogorelov et al. 2014 and references therein). This assumes a single plasma fluid coupled with a fluid description for neutral hydrogen through mass, momentum, and energy source terms.

References

Kim, T. K., Pogorelov, N. V., Zank, G. P., Elliott, H. A., & McComas, D. J. (2016), ApJ, 832, 72

Pogorelov, N., Borovikov, S., Heerikhuisen, J., et al. (2014), in Proc. 2014 Annual Conf. on Extreme Science and Engineering Discovery Environment (New York: ACM), 22

Pogorelov,N.V., Borovikov,S.N., Zank,G.P., and Ogino,T.,(2009), ApJ, 696, 1478.

Pogorelov,N.V., Zank,G.P., Borovikov,S.N., et al. (2008), in ASP Conf. Ser. 385, Numerical Modeling of Space Plasma Flows, ed. E.Pogorelov, E.Audit, and G.P.Zank (San Francisco, CA: ASP), 180.




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