Abstract
Studying shapes of dark matter (DM) halos can give us some information about the nature of DM, such as the DM self-interaction. One of the methods of probing DM halos is by galaxy-galaxy lensing. However, previous results on probing DM halo shapes have been inconclusive, they are often associated with large uncertainties. In this talk, I will present a new method to probe shapes of DM halos using the 3-point correlation function. This method has been shown to improve the error estimates from previous works by an order of magnitude when tested on simulation data. At the end, I will conclude by talking about the possibility of applying my method to actual observations in future surveys.
Coffee and tea will be served 20 minutes prior to the seminar.