Department of Physics, University of Athens, Panepistimiopoli Zografou, Athens, 15784, Greece
Institute of Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Vas. Pavlou & I. Metaxa, Penteli, 15236, Greece
Institute of Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Vas. Pavlou & I. Metaxa, Penteli, 15236, Greece
Department of Physics, University of Athens, Panepistimiopoli Zografou, Athens, 15784, Greece
K. Tsinganos
Department of Physics, University of Athens, Panepistimiopoli Zografou, Athens, 15784, Greece
Institute of Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Vas. Pavlou & I. Metaxa, Penteli, 15236, Greece
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Our study demonstrates a remarkable association between the earthward penetration of ULF waves and radiation belt electron enhancements during four magnetic storms that occurred in 2001. In the past, ULF waves had been observed at unusual depths during rare superstorms. But ULF wave activity, reaching magnetic shells as low as 2, was also observed during relatively intense storms when it played a key role in diffusing electrons radially inward and thereby accelerating them to higher energies.
Our study demonstrates a remarkable association between the earthward penetration of ULF waves...