The role of the energy spectrum anisotropy in the variations of the cosmic-ray fluctuations power-spectrum before interplanetary medium disturbances |
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| Authors: | L I Dorman I Ya Libin K F Yudakhin |
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| Institution: | (1) Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation of the Academy of Sciences of the USSR, Troitsk, Moscow Region, U.S.S.R. |
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| Abstract: | The variations in the form of the cosmic-ray fluctuation power spectrum as an interplanetary shock wave approaches the Earth have been calculated for different values of cosmic ray anisotropy. The relevant experimental estimates of the power spectra are inferred from the data of cosmic ray detection with the ground-based neutron monitors at cosmic-ray stations. A comparison between the theoretical and experimental estimates has demonstrated an important role of the cosmic ray anisotropy spectrum in the generation of the power spectrum as the latter is rearranged before the interplanetary medium disturbances. |
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