Physics @ Berkeley
Events in Physics
Title: Cosmology At Low Radio Frequencies: The 21 Cm Transition    (Colloquia)
Start Date: 01/22/2007
Time: 4:30 pm
Location: 1 LeConte Hall
Speaker: Steven Furlanetto
Affiliation: Assistant Professor of Physics, Yale University
Contact Person: Stuart Freedman   (510) 642-3034

Some of the greatest mysteries remaining in cosmology concern the growth of structure during the cosmic “dark ages” between the last scattering of the cosmic microwave background and the galaxy-dominated era we live in.  Soon a new set of low-frequency radio telescopes will begin probing this era by studying the redshifted hyperfine transition of neutral hydrogen in the intergalactic medium.  I will describe what we hope to learn about the dark ages, the first galaxies, and cosmic “reionization” from these observations, as well as the unique challenges posed by the measurements.