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- W3101215084 abstract "The statistical properties of magnetic discontinuities in the solar wind are investigated by measuring fluctuations in the magnetic field direction, given by the rotation Δθ that the magnetic field vector undergoes during time interval Δt. We show that the probability density function, P(Δθ), can be described by a simple model in which the magnetic field vector purely rotates with a relative increment ΔB/B that is lognormally distributed. We find that the probability density function of increments, P(ΔB/B), has a remarkable scaling property: the normalized variable x = (ΔB/B) · (Δt/Δt0)−α has a universal lognormal distribution for all time intervals Δt. We then compare measurements from the solar wind with those from direct numerical simulations of magnetohydrodynamic (MHD) turbulence. We find good agreement for P(Δθ) obtained in the two cases when the magnetic guide field to fluctuations ratio B0/brms is chosen accordingly. However, the scale invariance of P(ΔB/B) is broken in the MHD simulations with relatively limited inertial interval, which causes P(Δθ) to scale with measurement interval differently than in the solar wind." @default.
- W3101215084 created "2020-11-23" @default.
- W3101215084 creator A5021809037 @default.
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- W3101215084 date "2012-11-06" @default.
- W3101215084 modified "2023-09-27" @default.
- W3101215084 title "DISTRIBUTION OF MAGNETIC DISCONTINUITIES IN THE SOLAR WIND AND IN MAGNETOHYDRODYNAMIC TURBULENCE" @default.
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- W3101215084 doi "https://doi.org/10.1088/2041-8205/760/2/l22" @default.
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