On vertical electric fields at lunar magnetic anomalies

Jarvinen, R.; Alho, M.; Kallio, E.; Wurz, Peter; Barabash, S.; Futaana, Y. (2014). On vertical electric fields at lunar magnetic anomalies. Geophysical Research Letters, 41(7), pp. 2243-2249. American Geophysical Union 10.1002/2014GL059788

[img]
Preview
Text
Jarvinen_et_al-2014-Geophysical_Research_Letters.pdf - Published Version
Available under License Publisher holds Copyright.

Download (1MB) | Preview

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 <300V 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences

UniBE Contributor:

Wurz, Peter

Subjects:

500 Science > 530 Physics

ISSN:

0094-8276

Publisher:

American Geophysical Union

Language:

English

Submitter:

Cléa Serpollier

Date Deposited:

14 Apr 2015 16:51

Last Modified:

18 Sep 2015 14:46

Publisher DOI:

10.1002/2014GL059788

BORIS DOI:

10.7892/boris.66760

URI:

https://boris.unibe.ch/id/eprint/66760

Actions (login required)

Edit item Edit item
Provide Feedback