Passive longitudes of solar cosmic ray sources

Solar proton events during a period from 1956 to 2012 are considered. Fluences of protons of various energies in these events have been computed. On the basis of these extensive data the inhomogeneity of the distribution of their sources on the Sun along the Carrington longitude has been confirmed,...

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Bibliographic Details
Published in:Journal of physics. Conference series 2013-01, Vol.409 (1), p.12203-4
Main Authors: Getselev, I V, Podzolko, M V, Okhlopkov, V P
Format: Article
Language:English
Subjects:
Computation
Cosmic rays
Fluence
Inhomogeneity
Intervals
Longitude
Physics
Protons
Solar cosmic rays
Solar protons
Solar storms
Sun
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Summary:Solar proton events during a period from 1956 to 2012 are considered. Fluences of protons of various energies in these events have been computed. On the basis of these extensive data the inhomogeneity of the distribution of their sources on the Sun along the Carrington longitude has been confirmed, which had been earlier revealed in our studies. Special attention is paid to the discovered interval of "passive longitudes", extensive over the longitude (90-170°) and the life time (the whole period of observations). The summarized proton fluence of the events, which sources belong to this interval of Carrington longitudes, is considerably lower, than the summarized proton fluences of the events in the other heliolongitude intervals. From the 60 most powerful solar proton events during the whole period of observations not more than 1 event has been originated from this interval of "passive longitudes".
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/409/1/012203