Dark matter

My dissertation introduces a new account of how empirical methods and lines of evidence can come to bear on cosmological model-building. Through a careful study of the recent history of cosmology and dark matter research, I explicate a new type of justification for experiments, …

There is extensive evidence that 85% of the matter density in the Universe consists of “dark matter”. This evidence comes entirely from dark matter’s gravitational interactions with ordinary matter. Among the most important topics in particle physics today is to determine the pa…

Through their observable properties, the first and smallest dark matter halos represent a rare probe of subkiloparsec-scale variations in the density of the early Universe. These density variations could hold clues to the nature of inflation, the postinflationary cosmic history,…