4 papers
High-resolution weak lensing mass mapping from DES-Y3 data using diffusion-based prior
Supranta S. Boruah, Michael Jacob, Bhuvnesh Jain +2
High-resolution mapping of cosmic mass distribution is essential for a variety of astrophysical applications including understanding cosmic structure formation, and galaxy formatio…
Inference of Hubble constant using standard sirens and reconstructed matter density field
Supranta S. Boruah, Ghazal Geshnizjani, Guilhem Lavaux
We summarise a new approach for measuring the Hubble constant using standard sirens and the reconstructed matter density field obtained from observed galaxy surveys. Specifically,…
Diffusion-based mass map reconstruction from weak lensing data
Supranta S. Boruah, Michael Jacob, Bhuvnesh Jain
Diffusion models have been used in cosmological applications as a generative model for fast simulations and to reconstruct underlying cosmological fields or astrophysical images fr…
Fast Generation of Weak Lensing Maps with Analytical Point Transformation Functions
Kunhao Zhong, Gary Bernstein, Supranta S. Boruah +2
Nonlinear cosmological fields like galaxy density and lensing convergence can be approximately related to Gaussian fields via analytic point transforms. The lognormal transform (LN…