EDP Sciences
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0pan>0pan> p">i>he end ofng what is called an <i>A<i/> < 0 solar magnetic polarity cyc/_email">70o-alert" During/_email">400o-alert" Dperiod, solar activity was at its lowest level since the beginning of the /_email">>i>Aonal dro-alert"provides the opportunity to study charge-sign-dependent modulation under very quiet heliospheric conditions.<i>Aims. <i/>Drift theory for the solar modulation of cosmic rays predicts that the intensity of protons at the Earth is expected to f/p-alert p">i>fferenrecovery towards solar minimum when compared to electrons during <i>A<i/> < 0 cycles. These charge-sign related differences are investigated.<i>Methods. <i/>The solutions of a compreh/_email">>i>Aonal dro-alert"ft model are compared to PAMELA spectra to authenticate the modf/p-alert p">i>proach anng w predictions of how electrons and protons are differently modulated down to 1 MeV, based on new very local interstellar spectra.<i>Results. <i/>The comparison of observations and modelling provides insight into how the rigidity dependence of the three major diff/p-alert p">i>efficientng wng such quiet modulation conditions. How drift effects dissipate above several GeV and below 100 MeV is illustrated for both protons and electrons. The modulation that occurred at the Earth during this quiet period is shown as a function of rigidity and time. The e<sup>−<sup/>/p ratio is computed from 10 MV to 50 GV for this period and a prediction is made for what may be observed in terms of /_email">>sup>−o-aupco-alertt;i>A<i/> > 0 solar minimum.<i>Conclusions. <i/>The presence of drifts during this quiet period is established based on/_email">>i>Aongl dro-alert"provide measurf/p-alert p">i>he t effects ng wd electrons are quantified in terms of their rigidity and temporal development from 2006 to 2009."> p">_email">

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