Masia-Roig, Hector Smiga, Joseph A. Budker, Dmitry Dumont, Vincent Gruji, Zoran Kim, Dongok Kimball, Derek F. Jackson Lebedev, Victor Monroy, Madeline Pustelny, Szymon Scholtes, Theo Segura, Perrin C. Semertzidi, Yannis K. Shin, Yun Chang Stalnaker, Jason E. Sulai, Ibrahim Weis, Antoine Wickenbrock, Arne 2020-05-01 The Global Network of Optical Magnetometers for Exotic physics searches (GNOME) is a network of time-synchronized, geographically separated, optically pumped atomic magnetometers that is being used to search for correlated transient signals heralding exotic physics. GNOME is sensitive to exotic couplings of atomic spins to certain classes of dark matter candidates, such as axions. This work presents a data analysis procedure to search for axion dark matter in the form of topological defects: specifically, walls separating domains of discrete degenerate vacua in the axion field. An axion domain wall crossing the Earth creates a distinctive signal pattern in the network that can be distinguished from random noise. The reliability of the analysis procedure and the sensitivity of the GNOME to domain-wall crossings are studied using simulated data. application/pdf https://folia.unifr.ch/global/documents/308778 https://folia.unifr.ch/documents/308778/files/wei_amd.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dark.2020.100494 info:eu-repo/semantics/openAccess License undefined Physics of the Dark Universe. - 2020, vol. 28, p. 100494 info:eu-repo/classification/udc/53 Analysis method for detecting topological defect dark matter with a global magnetometer network http://purl.org/coar/resource_type/c_6501