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1 Introduction
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2 Linear polarization parameters of the O VI D
coronal line observed by SUMER/SoHO in the south polar hole
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3 Effect of the polar hole shape and intensity contrast on the polarization parameters
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4 O VI line profiles
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5 Limb-brightening function
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6 Interpretation of the O VI D
coronal line linear polarization parameters: Effect of the solar wind velocity field
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7 Conclusions
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Appendix A
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Appendix B: Relation between the "modulation rate'' as measured by SUMER and the polarization parameters
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References
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