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Searching for GeV Gamma-Ray Polarization and Axion-Like Particles with AMS-02
Xiuyuan Zhang, Yi Jia, Tracy R. Slatyer
We study the detectability of GeV-band gamma-ray polarization with the AMS-02 experiment and its proposed successor AMS-100, from Galactic and extragalactic sources. Characterizing…
Constraints on dark matter with future MeV gamma-ray telescopes
Kayla E. O'Donnell, Tracy R. Slatyer
A number of new balloon or space-based -ray observatories have been proposed to close a "MeV gap" in sensitivity to rays in the MeV-GeV energy band. One aspect of the scienc…
Inferring the Morphology of the Galactic Center Excess with Gaussian Processes
Edward D. Ramirez, Yitian Sun, Matthew R. Buckley +2
Descriptions of the Galactic Center using Fermi gamma-ray data have so far modeled the Galactic Center Excess (GCE) as a template with fixed spatial morphology or as a linear combi…
Regulating Sommerfeld resonances for multi-state systems and higher partial waves
Aditya Parikh, Ryosuke Sato, Tracy R. Slatyer
Long-range attractive interactions between dark matter particles can significantly enhance their annihilation, particularly at low velocities. This ``Sommerfeld enhancement'' is ty…
CMB limits on decaying dark matter beyond the ionization threshold
Clara Xu, Wenzer Qin, Tracy R. Slatyer
The temperature and polarization anisotropies of the cosmic microwave background (CMB) have been used to set constraints on decaying dark matter models down to keV masses. In this…
On the cosmology and terrestrial signals of sexaquark dark matter
Marianne Moore, Tracy R. Slatyer
We investigate the hypothesis that sexaquarks, hypothetical stable six-quark states, could be a significant component of the dark matter. We expand on previous studies of sexaquark…