Solar orbiter neutral solar-wind detector

M. Hilchenbach, S. Orsini, K. C. Hseih, E. Antonucci, S. Barabash, K. Bamert, R. Bruno, M. R. Collier, A. Czechowski, R. D'Amicis, E. De Angelis, I. Dandouras, A. M. Di Lellis, R. Esser, J. Giacalone, M. Gruntman, S. R. Habbal, J. R. Jokipii, E. Kallio, J. KotaH. Kucharek, R. Leonl, S. Livi, I. Mann, E. Marsch, S. Massetti, A. Milillo, E. Möbius, A. Mura, R. B. Sheldon, W. Schmidt, S. Selci, K. Szego, J. Woch, P. Wurz, V. Zanza, T. H. Zurbuchen

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Neutral hydrogen atoms, which give rise to the prominent solar Ly-α corona, are closely coupled to the emerging solar-wind plasma. The density ratio of neutral hydrogen to protons is minute, ∼10-6; therefore, the neutral atoms are tracers in the solar wind. In-situ observations of the neutral atoms, their flight paths (imaging), density, and velocity distributions are a new tool to the understanding of the Ly-α corona, i.e. setting limits on the plasma velocity distribution along the solar magnetic field lines. The other goal of the neutral solar-wind instrumentation is the in-situ observation of the interactions between solar wind plasma and dust grains near the Sun. We will discuss the science objectives and the potential "zero charge" solar-wind instrument envelope onboard Solar Orbiter.

Original languageEnglish (US)
Title of host publicationProceedings of the Second Solar Orbiter Workshop
StatePublished - Oct 2006
Event2nd Solar Orbiter Workshop - Athens, Greece
Duration: Oct 16 2006Oct 20 2006

Publication series

NameEuropean Space Agency, (Special Publication) ESA SP
ISSN (Print)0379-6566


Other2nd Solar Orbiter Workshop

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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