This Supplement provides supporting material for Abbott et al. (2016a). We briefly summarize past electromagnetic (EM) follow-up efforts as well as the organization and policy of the current EM follow-up program. We compare the four probability sky maps produced for the gravitational-wave transient GW150914, and provide additional details of the EM follow-up observations that were performed in the different bands.
B. P. Abbott, et. al., (2016) SUPPLEMENT: "LOCALIZATION and BROADBAND FOLLOW-UP of the GRAVITATIONAL-WAVE TRANSIENT GW150914" (2016 ApJL 826 L13).Astrophysical Journal, Supplement Series225:1. DOI: http://doi.org/10.3847/0067-0049/225/1/8
Astrophysical Journal, Supplement Series