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Djuna Croon, Durham University, [HET Theory Seminar], Probing dark matter substructure using gravitational microlensing
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US/Eastern
Small Seminar Room (https://bnl.zoomgov.com/j/1605506805?pwd=AA9rwL4hM5AwG2b0zEwDdXjzhvJjSz.1)
Small Seminar Room
https://bnl.zoomgov.com/j/1605506805?pwd=AA9rwL4hM5AwG2b0zEwDdXjzhvJjSz.1
Description
Many dark matter models predict small-scale substructure, including subhaloes, boson stars, miniclusters, and primordial black holes. In this talk, I will discuss how gravitational microlensing can serve as a powerful probe of these scenarios. I will describe the characteristic signals observed in experiments and highlight how certain mass distributions—such as those associated with boson stars—produce distinctive light curve features due to optical effects like caustics. Finally, I will explore opportunities for detecting these microlensing signatures using machine learning techniques, including real-time anomaly detection on time-series data from future surveys.
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