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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…
Axions 05
Pierre Sikivie
The Strong CP Problem and its resolution through the existence of an axion are briefly reviewed. The combined constraints from accelerator searches, the evolution of red giants and…
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…
Results of a Search for Cold Flows of Dark Matter Axions
L. Duffy, P. Sikivie, D. B. Tanner +7
Theoretical arguments predict that the distribution of cold dark matter in spiral galaxies has peaks in velocity space associated with non-thermalized flows of dark matter particle…