Ubiquitous giant Ly $\alpha$ nebulae around the brightest quasars at $z\sim 3.5$ revealed with MUSE

Elena Borisova, Sebastiano Cantalupo, Simon J. Lilly +17

Direct Ly $\alpha$ imaging of intergalactic gas at $z\sim 2$ has recently revealed giant cosmological structures around quasars, e.g. the Slug Nebula (Cantalupo et al. 2014). Despite the…