Events Calendar
Shedding light on dark matter and astrophysical sources with gamma-ray anisotropy
Tuesday April 9, 2013
| 2:00 pm
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Presenter: | Jennifer Siegal-Gaskins (Caltech) |
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| Series: | Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars | |
| Abstract: |
Gamma rays probe the most energetic processes in the universe and are a promising tool to search for signatures of new physics. One current mystery in high-energy astrophysics is the origin of the diffuse gamma-ray background. The contribution of undetected sources is expected to induce small-scale anisotropies in this emission, and these may provide a means of identifying and constraining the properties of its contributors. I will review the results of the first anisotropy analysis of the diffuse gamma-ray background measured by the Fermi Large Area Telescope, and highlight the new constraints this measurement has placed on high-energy source populations, focusing on implications for blazar population models and for a signal from the annihilation or decay of dark matter particles. I will also present new multi-wavelength techniques for unraveling contributors to diffuse emission.
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| Host: | Rouzbeh Allahverdi | |
| Location: | PAIS-2540, PAIS | |
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