Progress in detector, space and computer technology has triggered an avalanche of high-quality cosmological data, removing cosmology from the realm of philosophy and tranforming it into a quantitative empirical science. Although cosmology has accumulated enough physical evidence to construct a reasonable model of the formation process of the universe (the simple &Lambda-CDM model arguably fits all current data), there are yet many exciting questions that remain unanswered: What is dark matter? What is dark energy? How did it all begin? How will it end? More generally, how can we transform future cosmological measurements into a deeper understanding of the underlying physics?
Fortunately, the data avalanche looks set to continue for decades, with greatly improved measurements of the Cosmic Microwave Background (CMB) and its polarization, galaxy clustering, cluster abundance, gravitational lensing, type Ia supernovae and Ly-alpha forest from funded and planned experiments even over the next few years. Looking further ahead, 21cm tomography emerges as a cosmological probe with enormous potential.
My current research is focused on the CMB and on the 21-cm tomography, where by combining theoretical work with new measurements I do data mining and constrain cosmological models. I am also interested in the structure and composition of the interstellar medium (ISM), both as a problem in its own right and because of its effects as a foreground contaminant to CMB and to the future 21-cm measurements.Research Links: