G-structures for black hole near-horizon geometries

The work of NM is supported by the Ramón y Cajal fellowship RYC2021-033794-I, and by grants from the Spanish government MCIU-22-PID2021-123021NB-I00 and principality of Asturias SV-PA-21-AYUD/2021/52177. The work of AP was funded, in whole, by ANR (Agence Nationale de la Recherche) of France under contract number ANR-22-ERCS-0009-01. AL acknowledges support from Provincia Autonoma di Trento and by Q@TN, the joint lab between University of Trento. This project has received funding from European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 804305)