Noticia 8: A strip of purple light in the sky seeks scientific explanation

A new type of aurora borealis, located farther south than usual, has intrigued researchers

Recently, it has begun to know the observation of what some consider a new type of aurora. For years, fans of the observation of aurora borealis photograph a type of lights that are not exactly like the usual auroras. It is, as shown in a gallery where they recover images of the phenomenon, a kind of purple slope more or less sloping that appears in latitudes slightly further south than usual.

Eric Donovan, a professor of astronomy at the University of Calgary, collated the images with data from Swarm satellites of the European Space Agency, a constellation dedicated to analyzing the Earth's magnetic field. That allowed the Canadian researcher to know that at 300 kilometers altitude, the temperature was increasing to 3,000 degrees and there was a 25-kilometer-wide gas strip floating westward.

Miguel Herraiz says; "The auroras occur in the interaction between the solar wind and the upper atmosphere. The differences in this case may be due to a change in solar activity, but I think the explanation is more in the second part, in The interaction between the solar wind, the earth's magnetic field and the atmosphere, "he continues.

My opinion: This type of aurora borealis is such an interesting theme to study because it seems to me a good vision of the sky that we don't see everyday, so I had chosen this theme for this reason. 

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