Astronomy Colloquium: Gary Ferland

When

Mar. 13, 2020, 3:45pm to 4:45pm

Campus Location

Office/Remote Location

Room 217

Description

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 Information

Admission is free and open to all.

Contact Information

External Sponsor

Department of Physics and Astronomy