Just like me fr

Being that size can be really fucking intimidating to others.

I hate that I laughed at that

Planets Gone Wild

I mean, it has a magnetic field 6 or 7 orders of magnitude higher than ours. Id guess that extra strength allows it to pull particles from much further away and possibly from sources much more reticent to give up their particles than solar wind

Im guessing it only occurs when it is in a cloud or trail of charged particles. or perhaps there is a local (climatic?) cycle that sends charged particles to the poles.

The Wikipedia linked in these comments says it is likely from electron precipitation. Basically the magnetic field traps free elections and thus "wiggles" as they interact with the field. This can make a (pulsed) radio jet shooting from the pole, which is how this planet was observed. These electrons can fine from atmospheric phenomena such as lightning or large storms.

Earth has the same but much weaker phenomenon, the Van Allen belt, which was a difficult challenge to handle in the early days of space exploration.

This planet isn't in our solar system. We've found 6,053 exoplanets already, so it's a safe bet that there's lots more of them than you're aware of

https://en.wikipedia.org/wiki/Exoplanet

We have discovered over 6000 exoplanets in total, and over 100 in this year. I'd be surprised if you knew of all of them

Galaxy, not Solar System. There are a lot of planets in our galaxy that you’ve probably never heard of

Even with this mass this planet would have to pass one of the outer planets extremely close and quite slowly to have a chance of dragging a planet out of the solar system.

This is the same sort of idea as when galaxies merge. There is little chance of our solar system being effected in that scenario. There is just too much space to space.

That's one of my very favorite books. It's fantastic at setting the mood. The further books are ok but not as much to my taste.

You mean OnlyPlanets

Because the planet produces its own radiation. That much mass means this is less a "planet" and more of a proto star. It's actually large enough to fuse deuterium if the right conditions arise. Pour enough hydrogen in there to raise the mass three of four times what it has now and it'd be comparable to our sun.

Looks like a brown dwarf, especially from the Wiki page

No it is indeed an artists impression of the planet - it's on the wiki page.

I'm assuming that aurora only needs solar wind to happen on earth - or that solar wind outside the heliosphere is strong enough you don't need a star for it to happen.

In 2018 astronomers said "Detecting SIMP J01365663+0933473 with the VLA through its auroral radio emission, also means that we may have a new way of detecting exoplanets, including the elusive rogue ones not orbiting a parent star ...

The picture is definitely just some artist's conception, but it's not claimed to be a photo or meant to be anything other than what it is, an artist's conception. You're right that for the most part, a star is needed for aurora, at least for the kind of aurora we have on Earth since it depends on the solar wind interacting with the planet's magnetic field. But if there is anything that can be said about what we've discovered astronomically in the last century or so it's that there are always exceptions to every supposed rule.

The authors attribute the auroras to SIMP-0136’s magnetic field being vastly more powerful than Jupiter’s (750 times stronger according to a previous study). Electrons (presumably stripped from atoms by internal processes) would flow with the field and hit atmospheric molecules fast enough to make them glow, they conclude.

• How Does Rogue Planet SIMP-0136 Have Auroras When It Has No Stellar Wind?

Aside from the aurora part though, none of this is exceptional or rare (and maybe even the aurora part isn't rare either). Rogue planets are probably extremely common, possibly even more common than planets that are gravitationally bound in a star system. And objects of this size, which is really around where we'd start calling it a brown dwarf, are also very common, with more of them than there are main sequence stars.