Open AccessRecurrent variations of anomalous oxygen in association with a corotating interaction region
Author(s) -
M. K. Reuss,
M. Fränz,
E. Keppler
Publication year - 1996
Publication title -
annales geophysicae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.522
H-Index - 93
eISSN - 1432-0576
pISSN - 0992-7689
DOI - 10.1007/s00585-996-0585-6
Subject(s) - cosmic ray , physics , rigidity (electromagnetism) , solar rotation , astrophysics , amplitude , variation (astronomy) , heliosphere , astronomy , cosmic cancer database , atmospheric sciences , solar physics , solar wind , plasma , optics , nuclear physics , quantum mechanics
The fluxes of anomalous oxygen (Eranging from 3.5-6.8 MeV/amu), as measured by the EPAC instrument on ULYSSES,show a recurrent variation with the solar rotation period, which isanticorrelated with the fluxes of particles accelerated at the shocks of acorotating interaction region (CIR), and correlated with the fluxes of galacticcosmic rays known to be modulated by the CIR. The amplitude of this variation ismuch higher than expected for galactic cosmic rays of the same rigidity