报告题目：Excess of Diffuse Gamma-ray Emission from the Inner Galaxy: Bubbles, Jets, and Dark Matter

报 告 人：Su Meng，MIT

报告时间：2014年6月11日13:30

报告地点：物理系三楼报告厅

报告摘要：I will first talk about the discovery of a pair of gigantic bubbles in our Galaxy using data from Fermi Gamma-ray Space Telescope, and the multi-wavelength observations on this so called "Fermi bubble" structure. The bubble structure could be evidence for past accretion events of the central supermassive black hole. I will then summarize the current state of dark matter search with Fermi data, with the focus on gamma-ray line search and diffuse gamma-ray excess at ~GeV. I will end up with a discussion of future gamma-ray space missions, especially our recent proposal of a dedicated gamma-ray satellite mapping the sky from ~10 MeV to ~1 GeV.