The newly-discovered object resides 20 light-years from Earth and is some 12 times more massive than Jupiter, the largest planet in our solar system. "This. object is exciting because studying its magnetic dynamo mechanisms can give us new insights on how the same type of mechanisms can operate in planets beyond our solar system", Kao said.
The planet is thought to be 200 million years old and is 20 light-years from Earth. By comparison, the Sun's surface temperature is about 9,900 degrees Fahrenheit.
The odd object, called SIMP J01365663+0933473, has a magnetic field which is more than 200 times stronger than the magnetic field field of Jupiter, according to the study published in The Astrophysical Journal Supplement Series.
Brown dwarfs are generally "too massive to be considered planets, yet not massive enough to sustain nuclear fusion of hydrogen in their cores - the process that powers stars", the researchers note. The planet was previously mistakenly labeled in 2016 as a brown dwarf planet.
SIMP is not small; and is about 12 times larger than Jupiter and has a strong magnetic field, say the astronomers. The first ever sighting of a Brown Dwarf happened as late as 1995.
The difference between a gas giant and a brown dwarf has been the subject of debate among astronomers.
"They [the surprises] can potentially help us understand magnetic processes on both stars and planets".
Astronomers have discovered a rogue planet that's nearly too big to be considered a planet - and to top it off, the rogue object is a magnetic powerhouse. The mysterious auroras of the planet, or rather their radio signature, is what allowed the scientists to identify the planet, but for now it is still not known how these auroras are formed.
Simultaneously, Dr. Kao's team observed SIMP0136 in a new study at even higher radio frequencies and confirmed that its magnetic field was even stronger than first measured - more than 200 times stronger than Jupiter's.
On Earth, auroras are generated by interactions between its magnetic field and solar winds.
Astronomers have discovered a massive planet with a unusual glow just outside the solar system, where it is just drifting without any kind of orbit.
Brown dwarfs can produce strong auroras as well, but the cause behind them is unclear because they don't have solar wind from nearby stars.