Effects of large scale magnetic fields in the dayside ionosphere of Venus |
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Authors: | J Kar KK Mahajan MV SriLakshmi |
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Institution: | aNational Physical Laboratory, New Delhi -110012, India |
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Abstract: | The ion density and magnetic field data from the Pioneer Venus Orbiter for the first three dayside periapsis passes have been analysed to study the effect of the large-scale fields upon the dayside ion density profiles. The peak value of the O+ density in a strongly magnetised ionosphere often shows an enhancement as compared to a close non-magnetic orbit. Further, the height of the O+ peak shows a positive correlation with the height of the minimum of the magnetic field profile. Contrary to earlier findings, the compressional effects of the magnetic fields are observed even at near-terminator locations. |
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