aurora aus·tra·lis 
(ô-strālĭs)
(ô-strālĭs)n. pl. aurora aus·tra·lis·es (-lĭ-sĭz) or aurorae australis
An aurora that occurs in southern regions of the earth. Also called southern lights.
[New Latin aurōra austrālis : Latin aurōra, dawn + Latin austrālis, southern.]
aurora australis