Schellenberger, G.G.SchellenbergerDavid, L.L.DavidO'Sullivan, E.E.O'SullivanVrtilek, J. M.J. M.VrtilekHaines, C. P.C. P.Haines2025-12-302025-12-3020191538-4357https://hdl.handle.net/20.500.12740/23847The system A1758 is made up of two galaxy clusters, a more massive, northern cluster and a southern cluster. Both parts are undergoing major merger events at different stages. Although the mass of the merger constituents provides enough energy to produce visible shock fronts in the X-ray, none have been found to date. We present detailed temperature and abundance maps based on Chandra ACIS data and identify several candidates for shocks and cold fronts from a smoothed gradient map of the surface brightness. One candidate can be confirmed as the missing shock front in the northern cluster through X-ray spectroscopy. Nonthermal radio emission observed with the GMRT confirms the presence of radio halos in the northern and southern clusters and shows evidence for a relic in the periphery of the southern cluster. We do not find evidence for shocked gas between A1758 N and A1758 S.Acceso Abiertogalaxies: clusters: individual (A1758)galaxies: clusters: intracluster mediumgalaxies: interactionsradio continuum: generalX-rays: galaxies: clustersForming One of the Most Massive Objects in the Universe: The Quadruple Merger in Abell 1758http://dx.doi.org/10.3847/1538-4357/ab35e4