[Ed] Did an Alien Light Sail Visit The Solar System?

Interesting. I'm a bit confused how an object can accelerate like this one is described to.
https://spaceweatherarchive.com/2018...-solar-system/
Here's the paper. It must be bogus because there are all these numbers, letters, and sqiggles but no link to youtube videos.
https://arxiv.org/pdf/1810.11490.pdf