The planet is called rogue due to its lack of a parent star, having the distinction of being something between a planet and a brown dwarf, which is an object that has too great of a mass to be called a planet.
The VLA observations provided both the first radio detection and the first measurement of the magnetic field of a possible planetary mass object beyond our solar system. They say the new world is 200 million years old and 20 light-years from Earth. If you were to stand on it (not a good idea) you'd be subjected to temperatures in excess of 1,500 degrees Fahrenheit.
"This particular object is exciting because studying its magnetic dynamo mechanisms can give us new insights on how the same type of mechanisms can operate in extrasolar planets", Dr. Kao said. Scientists aren't exactly sure how the auroras form in brown dwarfs, but they do have some theories.
The recently discovered planetary mass was originally found in 2016 but was mistaken for a brown dwarf planet.
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The massive planet is the first object of its kind to be discovered using a radio telescope.
A further study carried out a year ago revealed that SIMP was part of a young group of stars.
Kao and her team are surprised that the object isn't orbiting a star, a typical behavior of planets.
Kao heard those results when she was looking at the newest data from the radio astronomy observatory, which helped the researchers determine the strong magnetic field. They also have strong auroras, similar to the northern lights that can be seen on Earth. "We think these mechanisms can work not only in brown dwarfs, but also in both gas giant and terrestrial planets".
On Earth, auroras are generated by interactions between its magnetic field and solar winds. However, brown dwarfs are typically solitary and don't have a nearby star - therefore they don't have any solar wind to interact with.
The observed 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 Gregg Hallinan, of Caltech.