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@article{Deca:2019:10.1103/physrevlett.123.055101,
author = {Deca, J and Henri, P and Divin, A and Eriksson, A and Galand, M and Beth, A and Ostaszewski, K and Horányi, M},
doi = {10.1103/physrevlett.123.055101},
journal = {Physical Review Letters},
pages = {055101--1--055101--7},
title = {Building a weakly outgassing comet from a generalized Ohm’s law},
url = {http://dx.doi.org/10.1103/physrevlett.123.055101},
volume = {123},
year = {2019}
}

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TY  - JOUR
AB  - When a weakly outgassing comet is sufficiently close to the Sun, the formation of an ionized coma results in solar wind mass loading and magnetic field draping around its nucleus. Using a 3D fully kinetic approach, we distill the components of a generalized Ohm’s law and the effective electron equation of state directly from the self-consistently simulated electron dynamics and identify the driving physics in the various regions of the cometary plasma environment. Using the example of space plasmas, in particular multispecies cometary plasmas, we show how the description for the complex kinetic electron dynamics can be simplified through a simple effective closure, and identify where an isotropic single-electron fluid Ohm’s law approximation can be used, and where it fails.
AU  - Deca,J
AU  - Henri,P
AU  - Divin,A
AU  - Eriksson,A
AU  - Galand,M
AU  - Beth,A
AU  - Ostaszewski,K
AU  - Horányi,M
DO  - 10.1103/physrevlett.123.055101
EP  - 1
PY  - 2019///
SN  - 0031-9007
SP  - 055101
TI  - Building a weakly outgassing comet from a generalized Ohm’s law
T2  - Physical Review Letters
UR  - http://dx.doi.org/10.1103/physrevlett.123.055101
UR  - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.055101
UR  - http://hdl.handle.net/10044/1/72728
VL  - 123
ER  -

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