Speaker
Dr
Matthew Pieri
(ICG, Portsmouth)
Description
We present results from stacking Lyα forest absorbers in the BOSS sample to achieve a variety of goals. Chief among them is the measurement of metals in the intergalactic medium (IGM) associated with the forest using various transitions, including several elements and species only seen using this technique. Metals in the IGM provide a valuable tracer of mechanical feedback - a crucial component of our understanding of galaxy formation and evolution. Surveys of galaxies with low transverse separation from quasar lines of sight and simulations allows us to make inferences on the nature of these absorbers.
