Combined heliospheric modulation of galactic protons and helium nuclei from solar minimum to maximum activity.


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  • uploaded June 25, 2021

Discussion timeslot (ZOOM-Meeting): 14. July 2021 - 12:00
ZOOM-Meeting URL:
ZOOM-Meeting ID: 96969970711
ZOOM-Meeting Passcode: ICRC2021
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'The global features of the modulation of galactic cosmic ray protons and helium nuclei are studied in the heliosphere from solar minimum to maximum activity with a comprehensive, three-dimensional, drift model and compared to proton and helium observations measured by PAMELA from 2006 to 2014. Combined with accurate very local interstellar spectra (VLIS) for protons and helium nuclei, this provides the opportunity to study in detail how differently the proton to helium ratio, over a wide range of rigidities, behaves towards increasing solar activity. In particular, the effects at the Earth of the difference in their VLIS’s, mass-to-charge ratio (A/Z) and those caused by the main modulation mechanisms will be illustrated from solar minimum to maximum activity.'

Authors: Donald Ngobeni
Co-Authors: O.P.M Aslam | Driaan Bisschoff | Chris Ndiitwani | Marius Potgieter | Mirko Boezio | Nadir Marcelli | Riccardo Munini | Vladimir Mikhailov
Indico-ID: 262
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Presenter: Donald Ngobeni

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