First identification of mirror mode waves in Venus' magnetosheath?

X - 14VOLWERK ET AL.: VENUS’ MIRROR MODE WAVESFigure 1.The magnetic field data for 5 May 2006. The spacecraft moves from thesolar wind (SW), through the bowshock (BS) into the magnetosheath (MS). The twobottom panels show the fluctuation of the magnetic field ∆B/B and the angle betweenthe maximum variance direction and the mean magnetic field θ Bmv (black dots), and theangle between the minimum variance direction and the mean magnetic field β Bmv (redplusses).Figure 2.Power spectra for intervals I (top panel 5 May, bottom panel 2 October)of mirror mode waves for the compressional (solid) , and right- (dotted) and left-handed(dashed) polarized components of the magnetic field. The obsevered compressional wavesare marked with a vertical line.Figure 3.The magnetic field data for 2 October 2006. The spacecraft moves fromperiapsis in Venus’ magnetosphere (MSp), through the magnetopause (MP) into themagnetosheath (MS). The two bottom panels show the fluctuation of the magnetic field∆B/Band the angle between the maximum variance direction and the mean magneticfield θ Bmv (black dots), and the angle between the minimum variance direction and themean magnetic field β Bmv (red plusses).D R A F T February 13, 2008, 4:35am D R A F T