by nick c » Sun Aug 11, 2024 8:06 pm
Hi Maol,
I meant to answer your post but apparently never did. Better late than never!
What explanation does EU provide for this? Does this dwarf have an internal dynamo, or is it receiving energy from a plasma filament conducting from elsewhere? ... or ... Watts up with this?
Auroras on planets within this solar system are caused by the planet's magnetic field interacting with charged particles from the Sun, that is, the solar wind, solar flares, or CME's (coronal mass ejections).
Put another way, auroras on planets in our solar system are caused by an external electric current (in the solar system, from the Sun). The gas giants and to a lesser degree the terrestrial planets can have aurora displays.
So, the auroras on these brown dwarfs are externally powered. They are receiving charged particles while traveling through interstellar space, galactic currents are the cause of their auroras.
Hi Maol,
I meant to answer your post but apparently never did. Better late than never!
[quote]What explanation does EU provide for this? Does this dwarf have an internal dynamo, or is it receiving energy from a plasma filament conducting from elsewhere? ... or ... Watts up with this?
[/quote]Auroras on planets within this solar system are caused by the planet's magnetic field interacting with charged particles from the Sun, that is, the solar wind, solar flares, or CME's (coronal mass ejections).
Put another way, auroras on planets in our solar system are caused by an external electric current (in the solar system, from the Sun). The gas giants and to a lesser degree the terrestrial planets can have aurora displays.
So, the auroras on these brown dwarfs are externally powered. They are receiving charged particles while traveling through interstellar space, galactic currents are the cause of their auroras.