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Constraints on magnetic fluctuation energies in the plasma sheet
Author(s) -
Neagu Elena,
Gary S. Peter,
Borovsky Joseph E.,
Baumjohann Wolfgang,
Treumann Rudolf A.
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl012384
Subject(s) - plasma , plasma sheet , physics , magnetic field , proton , ion , atomic physics , atmospheric pressure plasma , computational physics , satellite , function (biology) , magnetosphere , nuclear physics , quantum mechanics , astronomy , evolutionary biology , biology
Magnetic field and plasma observations from magnetotail passes of the AMPTE/IRM satellite are used to study the low‐frequency magnetic fluctuation energy density as a function of several local plasma parameters. Two statistical constraints on this quantity are found, one a function of proton pressure, one a function of proton flow speed, suggesting that ion‐driven electromagnetic instabilities may contribute to the observed fluctuations.