Large-scale heliospheric structure in 2004-2006 and its solar origin

As solar activity has begun to decline, the large-scale structure of the heliosphere has begun to turn simpler again. Large coronal holes and a more quiet streamer belt are structuring the heliosphere. Ulysses, on its unique orbit, has again begun to measure recurrent high-speed streams originating in coronal holes alternating with slow wind from other regions. Here, we use simple back-mapping techniques to identify the source regions of the solar wind measured by Ulysses. We relate the observed stream interfaces to solar features and give a complete list of stream interfaces for 2004 - 2006.