SWAN: A study of solar wind anisotropies

Jean Loup Bertaux, Risto Pellinen, Eric Chassefiere, Emmanuel Dimarellis, Florence Goutail, Thomas Holzer, Väinö Kelhä, Seppo Korpela, Erkki Kyrölä, Rosine Lallement

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional


The SWAN (solar wind anisotropies) Lyman photometer project is described. It will map the interplanetary hydrogen emission every other day. From these sky maps, the latitude distribution of the solar wind mass flux from equator to pole can be measured, as well as the variation of this distribution. Solar wind mass flux at high latitude is a key boundary condition to the dynamics of the expansion of the solar wind, particularly in the coronal holes, and correlatives studies conducted with other SOHO (solar and heliospheric observatory) coronal instruments. Secondary objectives include the monitoring of known comets, the possible discovery of new comets, and coronal observations.
Original languageEnglish
Title of host publicationThe SOHO Mission
Subtitle of host publicationScientific and Technical Aspects of the Instruments
PublisherEuropean Space Agency (ESA)
Publication statusPublished - Nov 1988
MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

Publication series

SeriesESA Special Publication


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