Richard Lieu, Dept. of Physics, University of Alabama in Huntsville

SSL Addition Conference Room at 3pm Tuesday December 18th

Since the mid 1990’s it has been increasingly apparent that material in and around clusters of  galaxies is multi-phased, consisting of dark matter and hot, virialized X-ray emitting gas, and also cooler gases and possibly non-thermal particles. The early evidence for the latter two components was from  EUV and soft X-ray observations from which it was inferred that a warm gas component lies predominantly at the outskirts of the cluster while relativistic particles may exist in the inner parts. Continue reading →

Christian Reichardt  (UC Berkeley, Physics department) is the speaker of the SSL colloquium of Friday December 7th 2012 entitled “By Dawn’s Early Light – what we are learning from new measurements of the cosmic microwave background”. More info