How do axisymmetric black holes grow monopole and dipole hair?

A. H. and N. Y. acknowledge support from the Simons Foundation through Grant No. 896696. E. R. M. acknowledges support as John A. Wheeler Fellow at the Princeton Center for Theoretical Science, as well as Princeton Gravity Initiative postdoctoral fellowships, and the Institute for Advanced Study. J. N. is partially supported by the U.S. Department of Energy, Office of Science, Office for Nuclear Physics under Award No. DE-SC0021301. H. W. acknowledges support provided by NSF Grants No. OAC-2004879 and No. PHY-2110416 and Royal Society (UK) Research Grant No. RGF\R1\180073. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), through the allocation TG-PHY210114, which was supported by NSF Grants No. ACI-1548562 and No. PHY-210074. This research used resources provided by the Delta research computing project, which is supported by the NSF Grant No. OCI 2005572 and the State of Illinois. Delta is a joint effort of the University of Illinois at Urbana-Champaign and its National Center for Supercomputing Applications. The authors acknowledge the Texas Advanced Computing Center (TACC) at the University of Texas at Austin for providing HPC resources that have contributed to the research results reported within this paper, under LRAC Grant No. AST21006. Part of the simulations presented in this article were performed on computational resources managed and supported by Princeton Research Computing, a consortium of groups including the Princeton Institute for Computational Science and Engineering (PICSciE) and the Office of Information Technology’s High Performance Computing Center and Visualization Laboratory at Princeton University. We acknowledge the Texas Advanced Computing Center (TACC) at the University of Texas at Austin for providing HPC resources on Frontera via allocations PHY22018 and PHY22041.