# Event horizons of merging black holes with 6 to 1 mass ratio

Event horizons of a 6 to 1 mass ratio binary black hole merger, slowed down when the event horizons merge. There are spins of 0.9 and 0.3 on the large and small black holes respectively, giving significant orbital precession. The vorticity tensor dotted twice with the normal vector is displayed on the event horizon surface.

- Kind: Short
- Year: 2016
- Runtime: 1 min
- By: SXS Collaboration
- Archive: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Event_horizons_of_merging_black_holes_with_6_to_1_mass_ratio.webm)
- Licence or status: [CC BY 3.0](https://creativecommons.org/licenses/by/3.0) (as the archive states it)
- Credit: SXS Collaboration
- Who can watch: Teens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/commons/137243003?play=1)