Relationship between Forbush effect parameters and the heliolongitude of solar sources |
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Authors: | M A Abunina A A Abunin A V Belov E A Eroshenko A S Asipenka V A Oleneva V G Yanke |
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Institution: | 1. Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, Russian Academy of Sciences (IZMIRAN), Troitsk, Moscow, 142190, Russia
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Abstract: | All significant events in galactic cosmic rays for the last 55 years have been collected in a Forbush effect database created at the Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation (hereinafter, IZMIRAN) based on data from the global network of neutron monitors. The solar sources of ~800 of these events have been identified. These events were divided into five groups with respect to the heliolongitudes of the associated X-ray solar flares, and typical behavior of their characteristics such as cosmic ray density and anisotropy, was studied independently for each group. The Forbush effect characteristics, which are the most dependent on the source heliolongitude, have been identified. |
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