CosmoVAE: Variational Autoencoder for CMB Image Inpainting

Understand

Cosmic microwave background radiation (CMB) is critical to the understanding of the early universe and precise estimation of cosmological constants.

• Due to the contamination of thermal dust noise in the galaxy, the CMB map that is an image on the two-dimensional sphere has missing observations, mainly concentrated on the equatorial region.
• The noise of the CMB map has a significant impact on the estimation precision for cosmological parameters.
• Inpainting the CMB map can effectively reduce the uncertainty of parametric estimation.