NPG Nonlinear Processes in Geophysics NPG Nonlin. Processes Geophys. 1607-7946 Copernicus Publications Göttingen, Germany 10.5194/npg-11-215-2004 Electron acoustic solitons in the Earth's magnetotail Tagare S. G. 1 Singh S. V. 3 2 Reddy R. V. 2 Lakhina G. S. 2 4 Applied Mathematics, Shadan Institue of P. G. Studies, Khairatabad, Hyderabad 5000004, India Indian Institute of Geomagnetism, Plot No. 5, Sector-18, New Panvel (W), Navi Mumbai – 410218, India Radio Science Center for Space & Atmosphere, Kyoto University, Kyoto 611-0011, Japan Solar-Terrestrial Environment Laboratory, Nagoya University, Toyokawa, Japan 14 04 2004 11 2 215 218 Copyright: © 2004 S. G. Tagare et al. 2004 This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Generic License. To view a copy of this licence, visit https://creativecommons.org/licenses/by-nc-sa/2.5/ This article is available from https://npg.copernicus.org/articles/11/215/2004/npg-11-215-2004.html The full text article is available as a PDF file from https://npg.copernicus.org/articles/11/215/2004/npg-11-215-2004.pdf

Small amplitude electron - acoustic solitons are studied in a magnetized plasma consisting of two types of electrons, namely cold electron beam and background plasma electrons and two temperature ion plasma. The analysis predicts rarefactive solitons. The model may provide a possible explanation for the perpendicular polarization of the low-frequency component of the broadband electrostatic noise observed in the Earth's magnetotail.