The Baryon Content of the Local Intergalactic Medium

John T. Stocke, J. Michael Shull, Steven V. Penton

We describe our surveys of low column density Lyman-alpha absorbers [N(HI) = 10^(12.5-16.0) cm^-2], which show that the warm photoionized IGM contains 30% of all baryons at z < 0.1…