TY - JOUR
T1 - On vertical electric fields at lunar magnetic anomalies
AU - Jarvinen, R.
AU - Alho, M.
AU - Kallio, E.
AU - Wurz, P.
AU - Barabash, S.
AU - Futaana, Y.
N1 - Times Cited: 1 Kallio, Esa/F-9410-2014 1
PY - 2014
Y1 - 2014
N2 - We study the interaction between a magnetic dipole mimicking the Gerasimovich magnetic anomaly on the lunar surface and the solar wind in a self-consistent 3-D quasi-neutral hybrid simulation where ions are modeled as particles and electrons as a charge-neutralizing fluid. Especially, we consider the origin of the recently observed electric potentials at lunar magnetic anomalies. An antimoonward Hall
electric field forms in our simulation resulting in a potential difference of <300 V on the lunar surface, in which the value is similar to observations. Since the hybrid model assumes charge neutrality, our results suggest that the electric potentials at lunar magnetic anomalies can be formed by decoupling of ion and electron motion even without charge separation.
AB - We study the interaction between a magnetic dipole mimicking the Gerasimovich magnetic anomaly on the lunar surface and the solar wind in a self-consistent 3-D quasi-neutral hybrid simulation where ions are modeled as particles and electrons as a charge-neutralizing fluid. Especially, we consider the origin of the recently observed electric potentials at lunar magnetic anomalies. An antimoonward Hall
electric field forms in our simulation resulting in a potential difference of <300 V on the lunar surface, in which the value is similar to observations. Since the hybrid model assumes charge neutrality, our results suggest that the electric potentials at lunar magnetic anomalies can be formed by decoupling of ion and electron motion even without charge separation.
UR - http://onlinelibrary.wiley.com/doi/10.1002/2014GL059788/full
U2 - 10.1002/2014GL059788
DO - 10.1002/2014GL059788
M3 - Article
SN - 0094-8276
VL - 41
SP - 2243
EP - 2249
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 7
ER -