Bulletin of the American Physical Society
APS April Meeting 2017
Volume 62, Number 1
Saturday–Tuesday, January 28–31, 2017; Washington, DC
Session C10: Indirect Detection of Dark MatterInvited Undergraduate
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Sponsoring Units: DAP DPF Chair: Julie McEnery, NASA Goddard Space Flight Center Room: Roosevelt 2 |
Saturday, January 28, 2017 1:30PM - 2:06PM |
C10.00001: Dark Matter Searches in Milky Way Dwarf Spheroidal Galaxies Invited Speaker: Mei-Yu Wang Gamma-ray observations of Milky Way satellite provide one of the most sensitive and robust ways to probe WIMP dark matter. Satellite galaxies are compelling targets for dark matter searches due to their proximity, high dark matter content, and low astrophysical backgrounds. Detailed studies of the stellar kinematics of satellite galaxies precisely determine their dark matter content. In this talk, I will discuss the systematic uncertainties in determining the dark matter content of satellite galaxies from stellar kinematics, and the impacts on WIMP dark matter annihilation/decay cross section limits. I will discuss the modeling of new satellites recently discovered by the Dark Energy Survey (DES), and their impact on indirect dark matter searches. Finally I will discuss how current and future optical imaging surveys will improve our understanding of satellites dark matter distributions. [Preview Abstract] |
Saturday, January 28, 2017 2:06PM - 2:42PM |
C10.00002: The Status of Sterile Neutrino Dark Matter Invited Speaker: Shunsaku Horiuchi The sterile neutrino is a particle dark matter candidate with a host of observable signatures that is close to being fully tested. I will first review the implications for structure formation, comparing predictions of sterile neutrino cosmologies against observations. I will then review analyses of X-rays from dark matter concentrations in search of mono-energetic photons predicted from sterile neutrino dark matter decays. Structure formation and X-rays offer important complementary probes, and I will highlight the recent rapid progress in testing the sterile neutrino parameter space. I will also discuss implications of analyses leading to the detection of X-ray lines from clusters of galaxies and Andromeda. [Preview Abstract] |
Saturday, January 28, 2017 2:42PM - 3:18PM |
C10.00003: Indirect Searches for Dark Matter at the TeV Scale and Above Invited Speaker: Segev BenZvi The existence of dark matter, or matter which does not readily emit or absorb electromagnetic radiation, is supported by a wealth of astrophysical evidence. However, despite many years of observations the particle nature of dark matter remains unknown. In the past decade the high-energy physics community has undertaken major efforts to solve the mystery of dark matter by directly observing it in the laboratory. In parallel, a complementary effort of ``indirect'' detection is underway at astrophysical particle observatories. Using measurements of astrophysical gamma rays, neutrinos, and cosmic rays it is possible to study dark matter candidates which decay or annihilate into Standard Model particles. These measurements allow us to probe dark matter at the TeV scale, above the reach of laboratory experiments, and at the sub-eV scale. In this talk I will highlight indirect measurements of dark matter annihilation above 1 TeV using data from facilities such as the High Altitude Water Cherenkov (HAWC) Gamma-ray Observatory and the IceCube Neutrino Observatory. I will discuss the prospects for detecting dark matter using TeV cosmic rays, gamma rays, and neutrinos, the model dependence and systematic uncertainties of the observations, and connections to measurements in the laboratory. [Preview Abstract] |
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