Diffuse emissions are ubiquitous within our Galaxy. They probe star-forming regions, the chemical composition of the Galaxy and the Galactic magnetic field. Conversely, they also obscure cosmological measurements such as the cosmic microwave background and the epoch of reionisation signal. Detailed characterisation of these emissions is of interest to both cosmologists and astrophysicists. In early 2019 CosmoStat released our contribution to the investigation of thermal dust emission in the form of modified black-body temperature, spectral index and optical depth maps (to be found here). These intensity maps are presented at Nside 2048, FWHM 5 arcmin and were made from Planck (data release 2) HFI and IRAS data.

Reference 1: M. Irfan, J. Bobin, M-A. Miville-Deschenes and I. Grenier, "Determining thermal dust emission from Planck HFI data using a sparse parametric technique ", A&A, 623, 03/2019.