@Article{KogaGonMozSilCar:2014:LaElFi,
author = "Koga, D. and Gonzalez, Walter Dem{\'e}trio and Mozer, F. S. and
Silveira, Marcos Vinicius Dias and Cardoso, F. R.",
affiliation = "National Institute for Space Research - INPE, S{\~a}o Jos{\'e}
Dos CamposS{\~a}o Paulo, Brazil and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and Space Sciences Laboratory,
University of CaliforniaBerkeley, CA, United States and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and School of Engineering
- EEL, University of S{\~a}o PauloLorena, S{\~a}o Paulo,
Brazil",
title = "Larmor electric field observed at the Earth's magnetopause by
Polar satellite",
journal = "Physics of Plasmas",
year = "2014",
volume = "21",
number = "10",
keywords = "Polar satellites.",
abstract = "We present, for the first time, observational evidence of a
kinetic electric field near the X-line associated with asymmetric
reconnection at the Earth's dayside magnetopause using Polar
observations. On March 29, 2003, Polar satellite detected an
asymmetric collisionless reconnection event. This event shows a
unipolar Hall electric field signature and a simple deviation from
the guide field during the magnetopause crossing, with the absence
of an ion plasma jet outflow indicating that the magnetopause
crossing was near the X-line. As expected from particle-in-cell
simulations by Malakit et al. (Phys. Rev. Lett. 111, 135001
(2013)), an earthward pointing normal electric field appears in
the magnetospheric side of the ion diffusion region. The electric
field satisfies two necessary conditions for the existence of the
finite ion Larmor radius effect: (1) the ion Larmor radius (rg 2)
is larger than the distance between the stagnation point and the
edge of the ion diffusion region in the strong magnetic field side
(´S 2) and (2) the spatial extent of the kinetic electric field
(´EL) is of the order of the ion Larmor radius. Furthermore, it is
shown that the peak value of the Larmor electric field is
comparable to the predicted value. The observation of the Larmor
electric field can be valuable in other analyses to show that the
crossing occurred near the X-line.",
doi = "10.1063/1.4897935",
url = "http://dx.doi.org/10.1063/1.4897935",
issn = "1070-664X",
label = "scopus 2014-11 KogaGonMozSilCar:2014:LaElFi",
language = "en",
targetfile = "1.4897935koga.pdf",
urlaccessdate = "27 abr. 2024"
}