Revealing the Invisible: Strong Lensing Views and Clues of the Nature of Dark Matter Particle(s)

Details Revealing the Invisible: Strong Lensing Views and Clues of the Nature of Dark Matter Particle(s) Revealing the Invisible: Strong Lensing Views and Clues of the Nature of Dark Matter Particle(s)

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21740307m&link_type=abstract

American Astronomical Society, AAS Meeting #217, #403.07; Bulletin of the American Astronomical Society, Vol. 43, 2011

Statistics

Scientific paper

The amount of dark matter and its distribution in the universe has been mapped extremely well. So far, the nature of the fundamental particle or particles that make up dark matter has remained elusive. An emerging frontier with surprisingly discriminating power lies within galaxies: different dark matter particles can lead to vastly different properties in the predicted cohesiveness and statistics of dark matter sub-structure within galaxies. These structures need not host stars or gas, which would render them visible through established searching techniques. Their gravitational presence, however, cannot be hidden. Many galaxies act as strong gravitational lenses, producing multiple images of distant active galactic nuclei. With a tailored experiment, observing time-dependent and multi-wavelength variations in such strong lenses can reveal the statistics of otherwise-invisible sub-structures. These measurements can be connected to predictions of structure formation and evolution from different dark matter particle candidates, and some ruled out or their properties mapped, in a way that is completely independent and complementary to other methods of probing (or producing) dark matter. The OMEGA Explorer is developed to perform this experiment.

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