Laura Herold

A study of the Fermi bubbles near the Galactic plane

The Fermi bubbles are two large lobes of gamma-ray emission extending 55 degrees above and below the Galactic center. Since their discovery by the Fermi Large Area Telescope in 2010, their origin and the nature of the gamma-ray emission are still unsolved problems. The behaviour of the bubbles near the Galactic plane may have a clue to solve these questions. With 8 years of Fermi data we analyze the diffuse emission around the Galactic center. We use different methods to separate foreground and possible emission from the Fermi bubbles and derive properties of the spectrum and morphology of the bubbbles at low latitudes.