Gaur, G. et al.G. et al.Gaur2025-08-302025-08-302016-07-0110.3847/0067-0049/225/1/82-s2.0-84982684987https://repository.iitgn.ac.in/handle/IITG2025/21876This 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.truegravitational waves | methods: observationalArticlehttps://iopscience.iop.org/article/10.3847/0067-0049/225/1/8/pdf1 July 201650844WOS:000382309000008