New planet with strong aurora discovered 20 light years from Earth

Space								Image Source Caltech  Chuck Carter NRAO  AUI  NSF

Space Image Source Caltech Chuck Carter NRAO AUI NSF

Still unclear about their formation, scientists claim that their study showing the auroral radio emissions can further be used to discover more such planets beyond our solar system. It is simply floating through space without any tethers to a star. Wandering some 20 light years away from the sun, the 200-million-year-old planet has been dubbed "rogue planet" as it is traveling through space without orbiting any parent star.

The object, which is now around 20 light years from Earth, is more than 12 times the size of Jupiter.

According to experts, it is common for similar observations to be made on brown dwarfs, aborted stars with high mass to be considered as planets, but without enough to trigger nuclear fusion reactions and become stars.

Astronomers originally came to the conclusion that the object was a brown dwarf because of its mass and because it does not revolve around a star like a planet typically does.

The rogue plant also features a surface temperature of 1,500 degrees Fahrenheit, compared to negative 234 degrees Fahrenheit on Jupiter and 10,000 degrees Fahrenheit on the sun. When these particles near Earth, they're pulled toward the poles of our planet by our global magnetic field.

"Given its size, this object is just at the edge between a planet and a brown dwarf".

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Originally discovered in 2016, it was only recently that it was identified as a planetary-mass object, having originally been classified as a brown dwarf.

Artist's conception of SIMP01365, an object with 12.7 times the mass of Jupiter, but a magnetic field 200 times more powerful than Jupiter's.

This finding could help to better understand the magnetic processes of stars and planets, Kao believes.

She continued: "We think these mechanisms can work not only in brown dwarfs, but also in both gas giant and terrestrial planets".

Another team looking at the brown dwarf data, discovered an object called SIMP J01365663+0933473, to be far younger than the others. The auroras on Earth are caused by our planet's magnetic field interacting with the solar wind.

"Such a strong magnetic field presents huge challenges to our understanding of the dynamo mechanism that produces the magnetic fields in brown dwarfs and exoplanets and helps drive the auroras we see", said Caltech astronomer Gregg Hallinan.

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