Quasar Physics from Unusual SDSS Quasars

Patrick Hall

The Sloan Digital Sky Survey (SDSS) is obtaining high-quality, moderate-resolution spectra for about 100,000 quasars. At least 1 in 1000 of those quasars is interesting in some unusual way, and detailed studies of such objects complement statistical studies of large samples of normal objects. I will discuss several of the more unusual SDSS quasars found to date (including a Ly-alpha-only object and a quasar without broad Ly-alpha) and what they tell us about the range of physical conditions around quasars.