Fluctuations of cosmic rays and interplanetary magnetic field in the vicinity of interplanetary shock fronts |
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| Authors: | S A Starodubtsev A V Grigor’ev V G Grigor’ev I G Usoskin K Mursula |
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| Institution: | (1) Shafer Institute of Cosmophysical Research and Aeronomy, Siberian Division, Russian Academy of Sciences, Yakutsk, 677980, Russia;(2) Sodankyla Geophysical Observatory (Oulu Unit), University of Oulu, Finland;(3) Department of Physical Sciences, University of Oulu, Finland |
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| Abstract: | The spectral characteristic of fluctuations of cosmic rays (CRs) and the interplanetary magnetic field in the prefront region of interplanetary shock waves, where coherent CR fluctuations with energies from ～10 keV to ～1 GeV are often observed, have been studied. It is concluded that the spectrum of CR fluctuations is subjected to modulation by fast magnetosonic waves generated by low-energy CRs reflected and/or accelerated at the shock fronts. |
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