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In-situ Observations of a Co-rotating Interaction Region at Venus Identified by IPS and STEREO


This paper reports on the first combination of results from in-situ plasma measurements at Venus, using data from Venus Express, and remote sensing data from observations of interplanetary scintillation (IPS). In so doing, we demonstrate the value of combining remote sensing and in-situ techniques for the purpose of investigating interaction between solar wind, under several different conditions, and the Venusian magnetosphere. The ion mass analyser instrument (IMA) is used to investigate solar wind interaction with the Venusian magnetosphere in the presence of two different solar wind phenomena; a co-rotating interaction region (CIR) and a coronal mass ejection (CME). The CIR, detected with IPS and sampled in-situ at Venus is found to dramatically affect upstream solar wind conditions.

These case studies demonstrate how combining results from these different data sources can be of considerable value when investigating such phenomena.

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Correspondence to I. C. Whittaker.

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Remote Sensing of the Inner Heliosphere

Guest Editors: M.M. Bisi and A.R. Breen

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Whittaker, I.C., Dorrian, G.D., Breen, A. et al. In-situ Observations of a Co-rotating Interaction Region at Venus Identified by IPS and STEREO. Sol Phys 265, 197–206 (2010). https://doi.org/10.1007/s11207-010-9608-2

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  • Co-rotating interaction region
  • IPS
  • Venus
  • Venus express
  • Combination of remote sensing and in situ
  • Ion counts
  • CME
  • Mass loading