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A Stringent Upper Limit on Dark Matter Self-Interaction Cross Section from Cluster Strong Lensing
Kevin E. Andrade, Jackson Fuson, Sophia Gad-Nasr +4
We analyze strongly lensed images in 8 galaxy clusters to measure their dark matter density profiles in the radial region between 10 kpc and 150 kpc, and use this to constrain the…
Inferring the concentration of dark matter subhalos perturbing strongly lensed images
Quinn E. Minor, Manoj Kaplinghat, Tony H. Chan +1
We demonstrate that the perturbations of strongly lensed images by low-mass dark matter subhalos are significantly impacted by the concentration of the perturbing subhalo. For subh…
An unexpected high concentration for the dark substructure in the gravitational lens SDSSJ0946+1006
Quinn E. Minor, Sophia Gad-Nasr, Manoj Kaplinghat +1
The presence of an invisible substructure has previously been detected in the gravitational lens galaxy SDSSJ0946+1006 through its perturbation of the lensed images. Using flexible…
Strong constraints on thermal relic dark matter from Fermi-LAT observations of the Galactic Center
Kevork N. Abazajian, Shunsaku Horiuchi, Manoj Kaplinghat +2
The extended excess toward the Galactic Center (GC) in gamma rays inferred from Fermi-LAT observations has been interpreted as being due to dark matter (DM) annihilation. Here, we…
Multiple Chemodynamic Stellar Populations of the Ursa Minor Dwarf Spheroidal Galaxy
Andrew B. Pace, Manoj Kaplinghat, Evan Kirby +6
We present a Bayesian method to identify multiple (chemodynamic) stellar populations in dwarf spheroidal galaxies (dSphs) using velocity, metallicity, and positional stellar data w…