Rapid Optical/NIR GRB follow-up with RATIR: the Reionization And Transient InfraRed cameras

Author: Owen Littlejohns

Abstract: RATIR, a six band simultaneous optical/NIR imaging camera (r, i, z, Y, J, H) that is 100% time dedicated to GRB follow-up, has been operating autonomously, slewing automatically to GRBs with pipeline software identifying and characterising sources within Swift error circles since December of last year. With rapid slewing and autonomous interrupt capabilities, imaging can begin within minutes of receiving a Swift position, detecting optically faint afterglows in the NIR and quickly alerting the community to potential GRBs at high (6 < z < 10) redshift. We discuss the instrument and telescope here and summarise the GRB data taken to date.