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On the global production rates of energetic neutral atoms (ENAs) and their association with the Dst index
Author(s) -
Ebihara Y.,
Barabash S.,
Ejiri M.
Publication year - 1999
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 - 10.1029/1999gl900618
Subject(s) - magnetosphere , physics , storm , production (economics) , energetic neutral atom , production rate , index (typography) , atomic physics , environmental science , atmospheric sciences , plasma , nuclear physics , meteorology , economics , world wide web , computer science , macroeconomics , industrial engineering , engineering
This paper describes calculations of the global production rates of the energetic neutral atoms (ENAs) in the magnetosphere and their association with the Dst index on the basis of quantitative numerical simulations. We simulate an idealized moderate storm and calculate the total ENA production rates with energies between 3.8 and 160.4 keV. For energies less than 30 keV, the production rates are approximately proportional to Dst for both the storm main and the recovery phases. For energies greater than 30 keV, the total production rates do not show any clear correlation with Dst and demonstrate oscillations with the corresponding drift period and beatings.