There are multiple artists with this name: 1) Autonomy is a one man brutal death metal band from Rhode Island, USA. They have released an EP called "Dimensions of Mephitic Decay" in Feburary 2011 via Sevared Records.
2) Autonomy is a nu-metal band from Daventry, United Kingdom. Members:
Richard Bradley - drums
Paul Harrison - bass
Jay Spencer - vocals
Soup Carpenter - vocals
Matt Cosentino - guitar 3) Autonomy is a post-punk band from Carbondale, IL.
Vocals - Andre Sax
Guitars - Ralph Martinez