The 2009 Fermi Symposium

Fermi LAT Discovery of Gamma-rays from the Giant Radio Lobes of Centaurus A

Teddy Cheung, NRL

Abstract:

We report the Fermi LAT discovery of gamma-ray emission emanating from the giant radio lobes (∼10 deg total angular extent) of Centaurus A. The gamma-rays are interpreted as inverse Compton scattered relic radiation from the cosmic microwave background, with additional contribution at higher energies from the infrared-to-optical extragalactic background light. Constraints on the magnetic field and particle energy content in the lobes will be discussed.