Saturday, August 1, 2015
Aurora Outside Solar System for the First Time
This is the first time we confirm that we see auroras in brown dwarfs, "said Stuart Littlefair, astronomers from the University of Sheffield, UK.
Aurora is detected in an object called LSR J1835 was more red and a million times brighter than auroras on Earth.
Astronomers do not know exactly how the aurora is formed. What is clear, the occurrence of aurora that could not be the same as on Earth.
Littlefair said, there's no Sun-like stars around LSR J1835 that the aurora is not possible due to shipment energy particles that interact with the atmosphere.
The charged particles then interact with hydrogen in the atmosphere of brown dwarfs to produce a red color.
Alternatively, there is a planet or moon around LSR J1835 that have not been detected. Planet or moon that sends material to a brown dwarf, triggering the formation of the aurora.
In Jupiter, a number of aurora is formed in that way. Charged particles sent from the active volcano on Io, one of Jupiter's moons.
Brown dwarfs are objects that are too small to be a star, but also too big to be planets.
Astronomers already knew that the brown dwarf has clouds and atmosphere. This aurora findings reveal another secret of brown dwarfs.