Energetic Neutral Atom (ENA) images of the disturbed ring current recorded by
the NUADU instrument on TC-2 and complementary data obtained by HENA/IMAGE
during favorable relative positions of the orbits of the two spacecraft

S. McKenna-Lawlor, L. Li, S. Barabash, K. Kudela, J. Balaz, I. Strharsky, K.
Brinkfeldt, H. Gunnel, C. Shem, J. Shi, J-B. Cao, S. Fu, E.C. Roelof, P.C.
Brandt and I. Dandouras.

China's Explorer-2 spacecraft (TC-2) was launched into an elliptical orbit (700
x 39,000 km) around the Earth at an inclination of 90 degrees on 25 July, 2004.
Included in the payload is an Energetic NeUtral Atom (ENA) imager NUADU, which
can provide a full 4pi image on the completion of each spacecraft spin in the
energy range 45 - > 158 keV. In late 2004 early 2005 the IMAGE spacecraft, which
carries a high-energy neutral atom imager (HENA) featuring data channels that,
to some extent, overlap with those of NUADU, approached 90 degree magnetic
latitude. During this favourable relative position of the spacecraft orbits,
data obtained by NUADU and HENA during disturbed geomagnetic conditions are
presented and discussed.

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Presentation, 2nd Annual Asia Oceanic Geosciences Society Meeting, Singapore 
20-24 June 2005