Mean Interplanetary Magnetic Field Measurement Using the ARGO-YBJ Experiment
G. Aielli, C. Bacci, B. Bartoli, P. Bernardini, X.J. Bi, C. Bleve, P., Branchini, A. Budano, S. Bussino, A.K. Calabrese Melcarne, P. Camarri, Z., Cao, A. Cappa, R. Cardarelli, S. Catalanotti, C. Cattaneo, P. Celio, S.Z., Chen, T.L. Chen, Y. Chen, P. Creti, S.W. Cui, B.Z. Dai
TL;DR
This paper demonstrates how the ARGO-YBJ experiment can measure the interplanetary magnetic field by analyzing the deflection of cosmic ray shadows caused by solar wind magnetic effects.
Contribution
It introduces a novel method to measure the interplanetary magnetic field using cosmic ray shadow shifts observed by the ARGO-YBJ experiment.
Findings
The shadow shift correlates with magnetic field strength.
The method provides a new way to monitor solar wind magnetic properties.
Results align with existing magnetic field measurements.
Abstract
The sun blocks cosmic ray particles from outside the solar system, forming a detectable shadow in the sky map of cosmic rays detected by the ARGO-YBJ experiment in Tibet. Because the cosmic ray particles are positive charged, the magnetic field between the sun and the earth deflects them from straight trajectories and results in a shift of the shadow from the true location of the sun. Here we show that the shift measures the intensity of the field which is transported by the solar wind from the sun to the earth.
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