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Earth, Planets and Space
Fig. 19 | Earth, Planets and Space

Fig. 19

From: The existence of cosmic ray sidereal anisotropies of galactic and solar origins with energies lower than 104 GeV and their modulation caused by the presumed behavior pattern of the heliomagnetosphere and of its neighboring gaseous matter in interstellar magnetic field

Fig. 19

Solar modulation of \({\rm{G(}}{{\rm{t}}_{{{\rm{S}}_{\rm{i}}}}}{\rm{)}}\) and \({\rm{T(}}{{\rm{t}}_{{{\rm{S}}_{\rm{i}}}}}{\rm{)}}\) observed by the underground muon telescopes (NE, NW, SW, ... S3) at Sakashita in the period (1971–2000), (Nagashima et al, 2004). (a) The latitude dependence of \({\rm{G(}}{{\rm{t}}_{{{\rm{S}}_{\rm{i}}}}}{\rm{)}}\) and \({\rm{T(}}{{\rm{t}}_{{{\rm{S}}_{\rm{i}}}}}{\rm{)}}\). (b) The polarity (P or N) and solar activity (A or Q) dependence of the two components ‘sW’ and ‘s’ in (a), which shows the most clear coexistence of \({\rm{G(}}{{\rm{t}}_{{{\rm{S}}_{\rm{i}}}}}{\rm{)}}\) and \({\rm{T(}}{{\rm{t}}_{{{\rm{S}}_{\rm{i}}}}}{\rm{)}}\), are separated, respectively, into four periods of AP, QP, AN and QN. The magnitudes of \({\rm{G(}}{{\rm{t}}_{{{\rm{S}}_{\rm{i}}}}}{\rm{)}}\) and \({\rm{T(}}{{\rm{t}}_{{{\rm{S}}_{\rm{i}}}}}{\rm{)}}\) show, respectively, the proper modulation patterns shown by Eqs. (1) and (2).

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