Magnetic fluctuations in anisotropic space plasmas: The effect of the plasma environment. Issue 10 (15th November 2016)

• Record Type: Journal Article
• Authors: Valdivia, J.A.; Toledo, B.A.; Gallo, N.; Muñoz, V.; Rogan, J.; Stepanova, M.; Moya, P.S.; Navarro, R.E.; Viñas, A.F.; Araneda, J.; López, R.A.; Díaz, M.
• Is Part Of: Advances in space research. Volume 58:Issue 10(2016)
• Page Start: 2126
• Page End: 2133
• Publication Date: 2016-11-15
• Subjects: Thermally induced electromagnetic fluctuations; Space sciences -- Periodicals; Astronautics -- Periodicals; Geophysics -- Periodicals; 500.505
• DOI: 10.1016/j.asr.2016.04.017
• Languages: English
• ISSNs: 0273-1177

Abstract

Abstract: The observations in the solar wind, which are usually organized in a beta-anisotropy diagram, seem to be constrained by linear instability thresholds. Unexpectedly, under these quasi-stable conditions, there is a finite level of electromagnetic fluctuations. A relevant component of these fluctuations can be understood in terms of the electromagnetic fields produced by the thermal motion of the charged particles. For the simple case of parallel propagating fields in an electron–proton plasma, we study the effect of the parameter ω pp / Ω c that characterizes the different space physics environments, and can affect the continuum spectrum produced by these fluctuations, which in turn may be used to understand the relevance of these processes occurring in a specific plasma environment.