Large-scale Structure and Turbulence Transport in the Inner Solar Wind: Comparison of Parker Solar Probe's First Five Orbits with a Global 3D Reynolds-averaged MHD Model
| dc.contributor.author | Chhiber, Rohit | |
| dc.contributor.author | Usmanov, Arcadi V. | |
| dc.contributor.author | Matthaeus, William H. | |
| dc.contributor.author | Goldstein, Melvyn | |
| dc.date.accessioned | 2022-08-25T14:59:24Z | |
| dc.date.available | 2022-08-25T14:59:24Z | |
| dc.date.issued | 2021-12-14 | |
| dc.description.abstract | Simulation results from a global magnetohydrodynamic model of the solar corona and solar wind are compared with Parker Solar Probe (PSP) observations during its first five orbits. The fully three-dimensional model is based on Reynolds-averaged mean-flow equations coupled with turbulence-transport equations. The model includes the effects of electron heat conduction, Coulomb collisions, turbulent Reynolds stresses, and heating of protons and electrons via a turbulent cascade. Turbulence-transport equations for average turbulence energy, cross helicity, and correlation length are solved concurrently with the mean-flow equations. Boundary conditions at the coronal base are specified using solar synoptic magnetograms. Plasma, magnetic field, and turbulence parameters are calculated along the PSP trajectory. Data from the first five orbits are aggregated to obtain trends as a function of heliocentric distance. Comparison of simulation results with PSP data shows good agreement, especially for mean-flow parameters. Synthetic distributions of magnetic fluctuations are generated, constrained by the local rms turbulence amplitude given by the model. Properties of this computed turbulence are compared with PSP observations. | en_US |
| dc.description.sponsorship | We thank R. Bandyopadhyay for useful discussions. This research was partially supported by the NASA Heliophysics Supporting Research program (grants 80NSSC18K1210 and 80NSSC18K1648), and by the Parker Solar Probe Mission. Support was also provided by the NASA LWS grant under Award No. 80NSSC20K0377 and a subcontract from the New Mexico Consortium. Computing resources supporting this work were provided by the University of Delaware (Caviness cluster) and by the NASA High-End Computing (HEC) Program (awards SMD-17-5880 and SMD-17-1617) through the NASA Advanced Supercomputing Division at Ames Research Center and the NASA Center for Climate Simulation at Goddard Space Flight Center. We acknowledge the PSP mission for use of the data, which are publicly available at the NASA Space Physics Data Facility (https://spdf.gsfc.nasa.gov/). This work utilizes data produced collaboratively between AFRL/ADAPT and NSO/NISP. | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.3847/1538-4357/ac1ac7 | en_US |
| dc.format.extent | 12 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2ejit-jvop | |
| dc.identifier.citation | Rohit Chhiber et al. "Large-scale Structure and Turbulence Transport in the Inner Solar Wind: Comparison of Parker Solar Probe's First Five Orbits with a Global 3D Reynolds-averaged MHD Model". ApJ 923, no. 89 (14 Dec 2021). https://doi.org/10.3847/1538-4357/ac1ac7 | en_US |
| dc.identifier.uri | https://doi.org/10.3847/1538-4357/ac1ac7 | |
| dc.identifier.uri | http://hdl.handle.net/11603/25563 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | AAS | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Goddard Planetary Heliophysics Institute (GPHI) | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | en_US |
| dc.title | Large-scale Structure and Turbulence Transport in the Inner Solar Wind: Comparison of Parker Solar Probe's First Five Orbits with a Global 3D Reynolds-averaged MHD Model | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0002-5317-988X | en_US |