In my story, I plan to make a double-planet between a gas dwarf and an Earth-like planet, so is it plausible in a red dwarf or Ultra-cool red dwarf system? and if so, could the gas dwarf protect the Earth-like Planet from solar flares/winds in such a System?
And if it wasn't plausible for a red dwarf system, could it work in a normal one(Like K/G type Star)?
Will the radiation of the gas-dwarf affect the Earth-like planet?
Assuming both planets have enough day-length(Tidally locked) to be able to generate magnetic-filed and being in the habitable zone