Looking at a NASA fact sheet about the SLS SRBs and I noticed it has at the bottom around the nozzle, separation motors.
Watching shuttle launches It looks to me like the SRBs continue to fire normally but there's a short change in the exhaust around separation. Did the shuttle's SRBs have something similar? If they did, I would like to know more detail on how they work. Like what's their fuel, how long did they burn?
Thanks in advance!