منابع مشابه
Helicon waves in the magnetotail
[1] The helicon modes are studied in Earth’s magnetotail using the Harris sheet as a model of its equilibrium. The plasma sheet is divided into two regions: In region 1 both the electrons and the ions are treated as magnetized, whereas in region 2 the electrons are treated as magnetized but the ions are unmagnetized. The eigenmode equation for the low-frequency, parallel propagating right-hand ...
متن کاملSubstorm-associated large-scale magnetic field changes in the magnetotail: a prerequisite for “magnetotail deflation” events
An attempt is made to search for a critical condition in the lobe magnetic field to initiate large-scale magnetic field changes associated with substorm expansions. Using data from ISEE-1 for 1978, sudden decreases in the lobe magnetic field accompanied by magnetic field dipolarizations are identified. In this study, such events are designated as the magnetotail deflation. The magnetic field co...
متن کاملMagnetotail energy dissipation during an auroral substorm
Violent releases of space plasma energy from the Earth's magnetotail during substorms produce strong electric currents and bright aurora. But what modulates these currents and aurora and controls dissipation of the energy released in the ionosphere? Using data from the THEMIS fleet of satellites and ground-based imagers and magnetometers, we show that plasma energy dissipation is controlled by ...
متن کاملProton/electron temperature ratio in the magnetotail
We study the temperature ratio of protons and electrons based on statistics of Cluster observations in the Earth’s magnetotail from 2001 to 2004. During these years, from June to November, the Cluster spacecraft visited the plasma sheet at the distance r ∼−19RE. We use proton and electron moments collected in the central region of the plasma sheet (|Z|< 5RE). We find an average ratio of proton ...
متن کاملMicrostructure of Magnetic Reconnection in Earth's Magnetotail
A recent study of magnetic reconnectiori in the earth's magnetotail dentified five events in which a pulse of heated electrons appeared near the end of an interval of fast tailward plasma flow. Further investigation of these events has revealed the following information on their microstructure' (1) Measurements of the electron Velocity distribution show that the temperature rise can be characte...
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ژورنال
عنوان ژورنال: Space Science Reviews
سال: 2019
ISSN: 0038-6308,1572-9672
DOI: 10.1007/s11214-019-0599-5