Plasma sheet location of the nightside equatorward arcs

SV Dubyagin, VA Sergeev, MV Kubyshkina, AG Yahnin

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

We performed two tests to check the constancy of proton pressure along the field lines crossing the tail equator at r similar to 8...20 RE We use the isotropic boundaries as the reference field lines when comparing the pressure measured at low altitude with the plasma sheet pressure computed from either the magnetic field models or empiric formulas. The tests show that both pressure values are close to each other indicating a high degree of isotropy of the proton distributions.

Based on these results we analysed the pressure values at low altitudes near the equatorward auroral arcs on the nightside. These pressure values in five cases ranged between 0.1 and 0.4 nPa indicating that the equatorward arcs originate in the current sheet portion of the plasma sheet (at distances >10-12 Re). This is also consistent with are location near (or poleward of) the electron isotropic boundary, whose interpretation as the boundary of nonadiabatic scattering in the weak (

Язык оригиналаАнглийский
Название основной публикацииPROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON SUBSTORMS
РедакторыA Wilson
ИздательESA Publication Division
Страницы287-290
Число страниц4
ISBN (печатное издание)92-9092-772-0
СостояниеОпубликовано - 2000
Событие5th International Conference on Substorms - ST PETERSBURG
Продолжительность: 16 мая 200020 мая 2000

Серия публикаций

НазваниеESA SPECIAL PUBLICATIONS
ИздательESA PUBLICATIONS DIVISION C/O ESTEC
Том443
ISSN (печатное издание)0379-6566

конференция

конференция5th International Conference on Substorms
ГородST PETERSBURG
Период16/05/0020/05/00

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