An unaccompanied brown dwarf like SIMP JO1365663+0933473, the object detected by the VLA, does not have a companion star and thus is not flying through a solar wind.
They're dubbing it "rogue" because it's mysteriously "drifting" through space without any kind of orbit around a parent star.
According to the study, the huge planet possesses a powerful magnetic field over 200 times stronger than that of Jupiter and can generate dazzling auroras outshining Earth's polar lights.
At just 20 light years from home, this marks the first planetary-mass object that has ever been detected using radio telescopy.
The planet produces a magnetic field around 200 times greater than that of the largest planet in our Solar System.
"This object is right at the boundary between a planet and a brown dwarf and is giving us some surprises that can potentially help us understand magnetic processes on both stars and planets", said Dr. Melodie Kao, a postdoctoral researcher at Arizona State University. Once more data was obtained, the idea that SIMP J01365663+0933473 was a brown dwarf was scrapped. Scientists theorise that one possibility is having a planet or moon interact with the dwarf's magnetic field. However, a nearby moon or another orbiting planet may be the answer. The temperature on that planet is about 825 degrees Celsius, which makes it a lot cooler than out Sun.
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Scientists using a radio-telescope array have spotted a big roaming cosmic body with an abnormally strong magnetic field.
The telescope spotted five objects, which scientists believed were all brown dwarves.
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.
Researchers are working to explain the presence of a mysterious large object floating outside the solar system that may be a rogue planet, RT reported. "We think these mechanisms can work not only in brown dwarfs, but also in both gas giant and terrestrial planets", Kao said.
The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc. Astronomers agree that the difference can be drawn as the line below which deuterium fusion is no more possible, known as the "deuterium-burning limit", it stands at around 13 Jupiter masses.
The Caltech team that originally detected its radio emission in 2016 had observed it again in a new study at even higher radio frequencies and confirmed that its magnetic field was even stronger than what they had measured the first time.