Mirror mode structures in the asymmetric Hermean magnetosheath: Hybrid simulations

Mirror mode structures in the Jovian magnetosheath

[1] Mirror mode waves are commonly observed in planetary magnetosheaths. Their magnetic signatures are often periodic but occasionally appear as intermittent increases of field magnitude (peaks) or as intermittent decreases (dips). We define quantitative mirror structure identification criteria and statistically analyze the distributions of the various forms. A survey of all the relevant magnet...

Universal properties of mirror mode turbulence in the Earth’s magnetosheath

We use more than 7 years of Time History of Events and Macroscale Interactions during Substorms observations to quantify the non-Gaussian properties associated with mirror mode turbulence in the Earth’s magnetosheath. We find that non-Gaussian statistics of mirror modes lead to the parabolic collapse of kurtosis as the square of the skewness (K = aS2 + B with a ∼ 1.3 and b ∼ −1). The parabolic ...

Mirror instability and L-mode electromagnetic ion cyclotron instability: Competition in the Earth's magnetosheath

Cluster magnetic field observations in the magnetosheath: four-point measurements of mirror structures

The Cluster spacecraft have returned the first simultaneous four-point measurements of the magnetosheath. We present an analysis of data recorded on 10 November 2000, when the four spacecrafts observed an interval of strong mirror-like activity. Correlation analysis between spacecraft pairs is used to examine the scale size of the mirror structures in three dimensions. Two examples are presente...

Mirror mode waves in Venus’s magnetosheath: solar minimum vs. solar maximum

The observational rate of mirror mode waves in Venus’s magnetosheath for solar maximum conditions is studied and compared with previous results for solar minimum conditions. It is found that the number of mirror mode events is approximately 14 % higher for solar maximum than for solar minimum. A possible cause is the increase in solar UV radiation, ionizing more neutrals from Venus’s exosphere ...