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Birefringence effect as a tool for astrophysical plasma study | | G D Fleishman
; Q J Fu
; M Wang
; G-L Huang
; V F Melnikov
; | | Date: |
24 Jun 2002 | | Journal: | Phys Rev Lett, 88 (25 Pt 1), 251101 | | Abstract: | Group delay between two magnetoionic modes is discovered and spectrally confirmed ( deltat(g) proportional, variantf(-3)) for the first time for quasiperiodic narrow band millisecond solar radio pulsations. Analysis of cross delays and autodelays proves that both X and O modes originate at the same source, so the radiation is weakly polarized originally. This finding allows one to specify the emission mechanism of the pulsations to be a nonlinear plasma mechanism operating at the second harmonics. Physical parameters of the solar corona are determined by the use of the theory of the nonlinear plasma mechanism; they agree well with independent observations of solar millisecond pulsations. | | Source: | PubMed, pmid12097081 | | Services: | Forum | Review | Favorites | |
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