High Energy Physics Seminar
Speaker: Jamie Holder, University of Delaware
Title: Astronomy at the Highest Energies: Exploring the Extreme Universe with VERITAS
Refreshments available at 1:30 pm.
Date: Tue, 28 Feb 2017, 1:45 pm - 2:45 pm
Location: 1400 BPS Bldg.
The gamma-ray band of the electromagnetic spectrum probes some of the most extreme environments in the Universe. Photons of these very-high energies can only be produced by the interactions of subatomic particles that have been accelerated to almost the speed of light. This acceleration occurs in a surprisingly wide variety of astrophysical sources: close to black holes and neutron stars, in the blast waves of supernova explosions, and in the relativistic jets of active galaxies. Gamma-ray emission can also be used to search for evidence of dark matter annihilation, and to probe cosmological photon fields. I will describe the detection methods for gamma-ray astronomy and highlight some of the most exciting results from the VERITAS observatory, which has been studying astrophysical sources from a mountain in Arizona since 2007. I will also describe the status and prospects for the Cherenkov Telescope Array, a next-generation gamma-ray observatory on a much larger scale.