is it possible to see Aurora borealis from southern chili or Argentina? if so when?

Answer 1

Impossible.

Aurora borealis is only visible in the northern hemisphere. You're looking for it's southern counterpart: aurora australis.

Answer 2

The aurora (plural aurorae/auroras) is a bright glow observed in the night sky, usually in the polar zone. For this reason some scientists call it a "polar aurora" (or "aurora polaris"). In northern latitudes, it is known as the aurora borealis (IPA /ɔˈɹɔɹə bɔɹiˈælɪs/), which is named after the Roman goddess of the dawn, Aurora, and the Greek name for north wind, Boreas. Especially in Europe, it often appears as a reddish glow on the northern horizon, as if the sun were rising from an unusual direction. The aurora borealis is also called the northern lights since it is only visible in the North sky from the Northern Hemisphere. The aurora borealis most often occurs from September to October and from March to April. Its southern counterpart, aurora australis, has similar properties. Australis is the Latin word for "of the South".

Answer 3

It depends on the time of the year and the solar activity. It's difficult to predict. Since we're close to a solar minimum they will be tough to see.