Conjugate observation of optical aurora with polar satellite and ground-based cameras

Details Conjugate observation of optical aurora with polar satellite and ground-based cameras Conjugate observation of optical aurora with polar satellite and ground-based cameras

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..23.1647f&link_type=abstract

Advances in Space Research, Volume 23, Issue 10, p. 1647-1652.

Physics

4

Scientific paper

Ultraviolet images from the Polar spacecraft enable observation of the optical aurora in the sun illuminated northern summer hemisphere. All sky cameras operated in Antarctica observe large portions of the southern polar hemisphere simultaneously during the dark southern winter. This opportunity permits real conjugate auroral observations for long periods and in all sectors of local time. Optical aurora conjugacy depends on the location on closed or open field lines and on the distortion of the geomagnetic field. Several case studies show a good conjugacy close to magnetic noon but sometimes non-conjugacy close to magnetic midnight. There seems to be better conjugacy during small and northward IMF, but no systematic dependence on the solar wind dynamic pressure could be found.

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