Jul 22 – 27, 2018
MacMillian
US/Eastern timezone

Aspects of Dark Matter Axion Clumps

Jul 26, 2018, 12:40 PM
25m
117 (MacMillian)

117

MacMillian

Brown University Providence, Rhode Island, USA
Talk Theory 4.2 Plenary

Speaker

Prof. Mark Hertzberg (Tufts University)

Description

In this talk I begin by reviewing how dark matter axions can undergo Bose-Einstein condensation and why this is captured by classical field theory. I explain that such condensates are spatially localized clumps, as they are organized by gravitation and self-interactions, and they may populate the galaxy. I discuss both the ground state and finite angular momentum states. Also, I comment on using ultra-light axions to resolve the cusp-core problem at the center of galaxies. I then discuss the possibility of parametric resonance of these axion clumps into electromagnetic waves, which may leave an astrophysical signature.

Primary author

Prof. Mark Hertzberg (Tufts University)

Presentation materials