Geomagnetic cutoff rigidities of cosmic rays in a model of the bounded magnetosphere with the ring current


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Аннотация

The cosmic ray geomagnetic cutoff rigidities are obtained by analytical calculations within an axisymmetric model of bounded magnetosphere, the magnetic field of which is created by the dipole field of the Earth and by two spheres located beyond the Earth with the currents that flow along the parallels and have a value proportional to the cosine of latitude. The inner sphere models the ring current flowing in the westerly direction; the outer sphere simulates the currents over the magnetopause, which flow in the easterly direction. The analytical results of calculations of variations in the geomagnetic cutoff rigidity for different levels of geomagnetic disturbances are given. The results are compared with the results of analytical calculations within the model of unbounded magnetosphere (when the outer sphere is absent).

Авторлар туралы

G. Kichigin

Institute of Solar–Terrestrial Physics, Siberian Branch

Email: sdobnov@iszf.irk.ru
Ресей, Irkutsk, 664033

V. Sdobnov

Institute of Solar–Terrestrial Physics, Siberian Branch

Хат алмасуға жауапты Автор.
Email: sdobnov@iszf.irk.ru
Ресей, Irkutsk, 664033

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