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The Case Against Warm or Self-Interacting Dark Matter as Explanations for Cores in Low Surface Brightness Galaxies
Rachel Kuzio de Naray, Gregory D. Martinez, James S. Bullock +1
Warm dark matter (WDM) and self-interacting dark matter (SIDM) are often motivated by the inferred cores in the dark matter halos of low surface brightness (LSB) galaxies. We test…
Stealth Galaxies in the Halo of the Milky Way
James S. Bullock, Kyle R. Stewart, Manoj Kaplinghat +2
We predict that there is a population of low-luminosity dwarf galaxies orbiting within the halo of the Milky Way that have surface brightnesses low enough to have escaped detection…
Halo Shape and Relic Density Exclusions of Sommerfeld-Enhanced Dark Matter Explanations of Cosmic Ray Excesses
Jonathan L. Feng, Manoj Kaplinghat, Hai-Bo Yu
Dark matter with Sommerfeld-enhanced annihilation has been proposed to explain observed cosmic ray positron excesses in the 10 GeV to TeV energy range. We show that the required en…
Accurate masses for dispersion-supported galaxies
Joe Wolf, Gregory D. Martinez, James S. Bullock +5
We derive an accurate mass estimator for dispersion-supported stellar systems and demonstrate its validity by analyzing resolved line-of-sight velocity data for globular clusters,…
The Dark Disk of the Milky Way
Chris W. Purcell, James S. Bullock, Manoj Kaplinghat
Massive satellite accretions onto early galactic disks can lead to the deposition of dark matter in disk-like configurations that co-rotate with the galaxy. This phenomenon has pot…
Hidden Charged Dark Matter
Jonathan L. Feng, Manoj Kaplinghat, Huitzu Tu +1
Can dark matter be stabilized by charge conservation, just as the electron is in the standard model? We examine the possibility that dark matter is hidden, that is, neutral under a…