Europhys. Lett.
Volume 67, Number 3, August 2004
Page(s) 504 - 510
Section Geophysics, astronomy, and astrophysics
Published online 01 July 2004
Europhys. Lett., 67 (3), pp. 504-510 (2004)
DOI: 10.1209/epl/i2003-10294-8

One-point statistics and intermittency of induced electric field in the solar wind

L. Sorriso-Valvo1, V. Carbone1 and R. Bruno2

1  Dipartimento di Fisica, Università della Calabria and Istituto Nazionale per la Fisica della Materia, Sezione di Cosenza Ponte Pietro Bucci, cubo 31C, I-87030 Rende (CS), Italy
2  Istituto di Fisica dello Spazio Interplanetario, CNR - I-00133 Roma, Italy

(Received 20 November 2003; accepted in final form 25 May 2004)

The interplanetary induced electric field $\bm{e}=\bm{v}\times
\bm{b}$ is studied, using solar-wind time series. The probability distribution functions (PDFs) of the electric-field components are measured from the data and their non-gaussianity is discussed. Moreover, for the first time we show that the electric-field turbulence is characterized by intermittency. This point is addressed by studying, as usual, the scaling of the PDFs of field increments, which allows a quantitative characterization of intermittency.

96.50.Bh - Solar and interplanetary electric and magnetic fields (including solar wind fields).
52.35.Ra - Plasma turbulence.
52.25.Gj - Fluctuation and chaos phenomena.

© EDP Sciences 2004