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Low-Latitude Solar Wind During the Fall 1998 SOHO-Ulysses QuadratureSolar and Heliospheric Observatory (SOH0)-Ulysses quadratures occur when the SOHO-Sun-Ulysses-included angle is 90 deg. These offer the opportunity to directly compare properties of plasma parcels, observed by SOHO [Dorningo et al.] in the low corona, with properties of the same parcels measured, in due time, in situ, by Ulysses [ Wenzel et al]. We refer the reader to Suess et al. for an extended discussion of SOHO-Ulysses quadrature geometry. Here it suffices to recall that there are two quadratures per year, as SOHO makes its one-year revolution around the Sun. This, because SOHO is at the L1 Lagrangian point, in essentially the same place as the Earth, while Ulysses is in a near-polar -5-year solar orbit with a perihelion of 1.34 AU and aphelion of 5.4 AU.
Document ID
Document Type
Reprint (Version printed in journal)
External Source(s)
Poletto, G.
(Osservatorio di Firenze Firenze, Italy)
Suess, S. T.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Biesecker, D. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Esser, R.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Gloeckler, G.
(Maryland Univ. College Park, MD, United States)
Ko, Y.-K.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Zurbuchen, T. H.
(Michigan Univ. Ann Arbor, MI, United States)
Date Acquired
August 21, 2013
Publication Date
October 16, 2002
Publication Information
Publication: Journal of Geophysical Research
Volume: 107
Issue: A10
ISSN: 0148-0227
Subject Category
Solar Physics
Report/Patent Number
Distribution Limits
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