Floating Exoplanet Has Extremely Strong Magnetic Field | Astronomy

Astronomers discovered a planet just beyond our solar system with many mysterious characteristics.

Originally, it was thought that brown dwarfs do not have magnetic fields, but over the past few decades, astronomers have noticed signs of magnetic activity as well as powerful auroras on these stars. Instead, the 200-million-year-old planet rotates around the galactic center of the Milky Way in interstellar space.

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

Brown dwarfs, objects that are two massive be considered planets but not massive enough to sustain nuclear fusion in their cores, were first predicted in the 1960s and detected for the first time in 1995.

The planet is considered to be a rogue one because it does not have an orbit around a parent star, unlike the planets of the solar system. Researchers believe that SIMP, which has magnetic field 200 times more powerful than Jupiter's, may also have a moon or other planet as its particle source.

However, the supermassive exoplanet or brown dwarf possesses a significant magnetic field by 200 times more potent than Jupiter and has a surface temperature of approximately 825 degrees Celsius. Astronomers found it using the National Science Foundation's Karl G. Jansky Very Large Array radio astronomy observatory in New Mexico.

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.

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

Initially the object was registered in 2016 as one of the brown dwarfs, the study of which is engaged in the VLA.

Last year, an independent team of scientists discovered that SIMP J01365663+0933473 was part of a very young group of stars. The discovery marks the first time radio observations and magnetic field measurements have been made of such a body and opens the door for future insights into exploring exoplanetary magnetic fields.

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.

(Copyright © 2015. All Rights Reserved.)
 
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