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A further look at particle annihilation in dark matter caustics
Aravind Natarajan, Pierre Sikivie
Dark matter caustics are small scale, high density structures believed to exist in galaxies like ours. If the dark matter consists of Weakly Interacting Massive Particles, these ca…
Does the Second Caustic Ring of Dark Matter Cause the Monoceros Ring of Stars ?
Aravind Natarajan, Pierre Sikivie
Caustic rings of dark matter were predicted to exist in the plane of the Galaxy at radii for . The recently discovered Monoceros Ring of s…
WIMP annihilation in caustics
Aravind Natarajan
The continuous infall of dark matter with low velocity dispersion from all directions in a galactic halo leads to the formation of caustics which are very small scale (parsec…
The Inner Caustics of Cold Dark Matter Halos
Aravind Natarajan, Pierre Sikivie
We prove that a flow of cold collisionless particles from all directions in and out of a region necessarily forms a caustic. A corollary is that, in cold dark matter cosmology, gal…
Robustness of Discrete Flows and Caustics in Cold Dark Matter Cosmology
Aravind Natarajan, Pierre Sikivie
Although a simple argument implies that the distribution of dark matter in galactic halos is characterized by discrete flows and caustics, their presence is often ignored in discus…