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Dwarf galaxies are ideal laboratories to study the relationship between theenvironment and AGN activity. However, the type of environments in which dwarfgalaxies hosting AGN reside is still unclear and limited to low-redshiftstudies (z < 0.5). We use the VIMOS Public Extragalactic Redshift Survey(VIPERS) to investigate, for the first time, their environments at 0.5 < z <0.9. We select a sample of 12,942 low-mass($\rm{log}(M_\mathrm{*}/M_{\odot})\leq10$) galaxies and use the emission-linediagnostic diagram to identify AGN. We characterise their local environments asthe galaxy density contrast, $\delta$, derived from the fifth nearest neighbourmethod. Our work demonstrates that AGN and non-AGN dwarf galaxies reside insimilar environments at intermediate redshift suggesting that the environmentis not an important factor in triggering AGN activity already since z = 0.9.Dwarf galaxies show a strong preference for low-density environments,independently of whether they host an AGN or not. Their properties do notchange when moving to denser environments, suggesting that dwarf galaxies arenot gas-enriched due to environmental effects. Moreover, AGN presence does notalter host properties supporting the scenario that AGN feedback does not impactthe star formation of the host. Lastly, AGN are found to host over-massiveblack holes. This is the first study of dwarf galaxies hosting AGN at z > 0.5.The next generation of deep surveys will reveal whether or not such lack ofenvironmental trends is common also for faint higher-redshift dwarf galaxypopulations.

The environment of AGN dwarf galaxies at z$\sim$0.7 from the VIPERS survey