Amateur astronomers have been capturing stunning images of double auroras, or “aurora borealis”, for years. But until now, nobody has been able to unlock their secrets.
What is a double aurora?
Double auroras are a rare phenomenon that happens when the Earth’s magnetic field interacts with energetic particles from the sun. They typically appear as two separate arcs in the sky, sometimes even appearing to intersect.
Double auroras can be incredibly beautiful to see, and amateur astronomers have been capturing them on film for years. But scientists aren’t sure exactly how they work, and their secrets may be locked inside these dazzling displays.
Scientists from the University of Leeds in England have been using amateur images to try and unlock some of the secrets of double auroras. By analyzing these pictures, they’ve been able to learn more about the way these displays form and evolve.
For example, they’ve been able to identify which parts of the Earth’s magnetic field are responsible for causing these arcs. And they’ve also been able to study how these arches change over time. This information could help scientists better understand how to double auroras work and why they’re so beautiful to watch.
If you want to see some incredible photos of double auroras taken by amateur astronomers, be sure to check out the University of Leeds’ website. They’ve got a great selection of photos that will show you just what these displays
How to capture an image of a double aurora
If you’re lucky enough to witness a double aurora, your photos could unlock its secrets. Double auroras occur when the Earth’s magnetic field connects two streams of charged particles from the sun. This happens most frequently during solar storms when huge clouds of charged particles break off from the sun and hurtle towards Earth.
To see a double aurora, you need to be in an area with clear skies and good visibility. Find an area free of light pollution and settle in for an epic viewing session. When the right conditions are met, look for a bright spot in the sky that appears to be split in two by a faint band of light. Shoot photos as quickly as possible while the aurora is still visible; it will usually dissipate within a few minutes.
The colors of a double aurora can vary dramatically depending on how strong the solar storm is. In some cases, the aurora may be predominantly green or red, while in others it may be more colorful, including shades of blue and violet. The patterns formed by the aurora vary too; some doubles have intricate geometric designs, while others are simple circles or lines.
Capturing a double aurora isn’t easy, but it’s well
What amateur astronomers can learn from their images of the double aurora
With the double aurora captured by amateur astronomers, we can learn many secrets about this rare event and how it is increasing our understanding of Earth’s magnetic field, solar wind interaction, auroras and other things. When these particles interact with the Earth’s magnetic field, they create an aurora. Double auroras are often more colorful than single auroras and can be seen from farther away because they are composed of two separate arcs. Amateur astronomers can learn a lot about double auroras by studying their images, and by trying to predict where they will be in the sky during different times of the year.