Brian Siana

I am primarily interested in understanding galaxy formation in the early universe and its effects on the intergalactic medium.  I use the Hubble and Spitzer Space Telescopes and the ground-based W. M. Keck Observatory to understand star formation processes in the early universe, determine a more accurate census of star formation, and estimate its effects on the intergalactic medium.  In particular, my latest research is focused on understanding how faint, dwarf galaxies ionized the hydrogen in the intergalactic medium in the first billion years (the so-called "reionization" of the universe).


Assistant Professor

Department of Physics and Astronomy
University of California, Riverside
900 University Ave
Riverside, CA 92521