The new discovery can make boffins believe that they may have a novel way of detecting and finding exoplanets, including rogue ones that are hard to identify since they are not orbiting a parent star like the planets do in our solar system.
A new planet with a large aurora has been discovered drifting alone through space. A light year is equal to about 6 trillion miles.
Dr Melodie Kao, an astronomer at Arizona State University said as per a report by Independent, "This object is right at the boundary between a planet and a brown dwarf, or "failed star", and is giving us some surprises that can potentially help us understand magnetic processes on both stars and planets". Brown dwarfs are failed stars-objects much larger than most planets but too small to sustain fusion reactions.
The odd object in the latest study, called SIMP J01365663+0933473, has a magnetic field more than 200 times stronger than Jupiter's.
It was first detected using a radio telescope, the National Science Foundation's Karl G. Jansky Very Large Array.
This planet was first found in 2016, but scientists classified it as being a brown dwarf. They are originally formed inside a star system but somehow escaped.
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A few decades ago, scientists believed that brown dwarf stars don't have magnetic fields.
A massive glowing "rogue" planetary-mass object has been discovered, surprising scientists with not only its size, but also the fact it's not orbiting a star.
"When it was announced that SIMP0136 had a mass near the deuterium-burning limit, I had just finished analyzing its newest VLA data", Dr. Kao said. The auroras seen on Earth are caused by our planet's magnetic field interacting with the solar wind. It also has a surface temperature of 1,500 degrees Fahrenheit, compared to minus 234 degrees Fahrenheit for Jupiter and 10,000 degrees Fahrenheit for the Sun.
Studies that followed it demonstrated that certain brown dwarfs display strong auroras, similar to the ones seen in the Solar System's giant planets.
The team is particularly excited by the new research because it relies in part on radio observations of the object's auroras - which means that radio telescopes may be able to identify new planets by their auroras.
On the team with Kao and Hallinan were J. Sebastian Pineda, now at the University of Colorado Boulder, David Stevenson of Caltech, and Adam Burgasser of the University of California San Diego.