Astronomy Colloquium: Gary Ferland
Gary Ferland from the University of Kentucky will be the featured speaker at an upcoming Department of Physics and Astronomy colloquium. His talk is titled, "Quasar Emission Lines – a Six Decade-Old Grand Computational/Spectroscopic Challenge."
Quasars are the most luminous objects in the universe, so bright that we can get good spectra out to high redshift, 90% across the universe. They have strong emission lines that are formed in high-density clouds exposed to ionizing radiation. The challenge is to figure out how to use them as signposts for conditions in the early universe. Ferland will outline the spectroscopic and computational challenges posed by their spectra, the big unanswered questions, and what we can do about them.
Admission is free and open to all.
Department of Physics and Astronomy