Colloquium

Resolving Galactic Mysteries in Gamma Rays

Studies of data from the Fermi Gamma-Ray Space Telescope have revealed surprising excesses of apparently diffuse gamma-ray emission toward the heart of the Milky Way, including the giant structures known as the Fermi Bubbles and the central glow often called the Galactic Center Excess. I will discuss these signals, their properties, and their possible interpretations and implications: the Bubbles could provide clues to the history of the supermassive black hole at the center of our galaxy, while evidence suggests that the Galactic Center Excess may be the first indication of a new and unexpected population of pulsars within the Galactic bulge. I will outline recent developments and next steps in disentangling the Galactic Center Excess from the Fermi Bubbles, and testing the pulsar hypothesis for its origin.

Followed by wine and cheese in Pupin 1332.

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