Evidence for anisotropic quenching in massive galaxy clusters at <i>z</i> ≈ 0.5

A recent observational result finds that the quenching of satellites in groups at $z=0.08$ has an angular dependence relative to semi-major axis central galaxy. This observation is described as `anisotropic quenching' or `angular conformity'. In this paper I study variation colour a mass limited sample satellite galaxies their angle from major Brightest Cluster Galaxy CLASH clusters up $z\sim0.5$, 4 Gyr further lookback time. The same found: close are more quenched than those along minor axis. also find star-forming tend avoid region +/-45 degrees signal thought be driven by AGN outflows axis, reducing density intergalactic medium and thus strength ram pressure. Here will discuss potential alternative mechanisms. Finally, note advent Legacy Survey Space Time (LSST) Euclid surveys allow for detailed phenomenon its evolution.