Published online by Cambridge University Press: 22 July 2013
The number of detections as well as significantly deep non-detections of optical/NIRafterglows of Type I (compact-object-merger population) Gamma-Ray Bursts (GRBs) has becomelarge enough that statistically meaningful samples can now be constructed. I presentwithin some recent results on the luminosity distribution of Type I GRB afterglows incomparison to those of Type II GRBs (collapsar population), the issue of the existence ofjet breaks in Type I GRB afterglows, and the discovery of dark Type IGRBs.