Dr. Robert Preece (Univ. of Alabama) visit our group and give colloquium speech

Oct 9, 2009

“GRB Observations with the Fermi Gamma-Ray Space Telescope”

After the first 14 months of operations, the Fermi Gamma-Ray Space Telescope has observed over 320 GRBs, including more than 10 by the ground-breaking Large Area Telescope. As with each new capability, the new observations are re-writing the book about what we thought we knew about GRBs as well as raising new questions.

In particular, the joint spectroscopy from the two instruments, covering roughly 6 decades in energy, has revealed some remarkable surprises. In particular, there are some interesting limits that can be placed on the level of violation of Lorentz Invariance by high-energy photons.