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Inflation that runs naturally: Gravitational waves and suppression of power at large and small scales
Quinn E. Minor, Manoj Kaplinghat
We point out three correlated predictions of the axion monodromy inflation model: large amplitude of gravitational waves, suppression of power on horizon scales and on scales relev…
Discovery of a New Galactic Center Excess Consistent with Upscattered Starlight
Kevork N. Abazajian, Nicolas Canac, Shunsaku Horiuchi +2
We present a new extended gamma ray excess detected with the Fermi Satellite Large Area Telescope toward the Galactic Center that traces the morphology of infrared starlight emissi…
SIMPle Dark Matter: Self-Interactions and keV Lines
Kimberly K. Boddy, Jonathan L. Feng, Manoj Kaplinghat +2
We consider a simple supersymmetric hidden sector: pure SU(N) gauge theory. Dark matter is made up of hidden glueballinos with mass and hidden glueballs with mass near the co…
Running with BICEP2: Implications for Small-Scale Problems in CDM
Shea Garrison-Kimmel, Shunsaku Horiuchi, Kevork N. Abazajian +2
The BICEP2 results, when interpreted as a gravitational wave signal and combined with other CMB data, suggest a roll-off in power towards small scales in the primordial matter powe…
Astrophysical and Dark Matter Interpretations of Extended Gamma-Ray Emission from the Galactic Center
Kevork N. Abazajian, Nicolas Canac, Shunsaku Horiuchi +1
We construct empirical models of the diffuse gamma-ray background toward the Galactic Center. Including all known point sources and a template of emission associated with interacti…
Self-Interacting Dark Matter from a Non-Abelian Hidden Sector
Kimberly K. Boddy, Jonathan L. Feng, Manoj Kaplinghat +1
There is strong evidence in favor of the idea that dark matter is self interacting, with the cross section-to-mass ratio . W…