21 cm intensity mapping: a 900 - 1300 MHz full-sky simulation

This HDF5 file stores the simulation used and described in Recovery of 21 cm intensity maps with sparse component separation (arXiv:2006.05996). It is a collection of intensity maps in units of mK, full-sky, in HEALPIX format with nside=256. There are 5 components: 1. 21cm cosmological signal, 2. galactic free-free diffuse emission, 3. galactic synchrotron diffuse emission, 4. extragalactic point sources and background and 5. instrumental polarization leakage. For each component, there are 400 maps, corresponding to 400 channels of 1 MHz from 900 to 1300 MHz. In the main paper the simulation is used to test the algorithm GMCA as a foreground removal method for 21cm intensity mapping. A practical example of how to use these data and apply GMCA on them is shown at this GitHub repository. If you are using this dataset or the tools developed to work with it, please do not forget to cite the dataset itself as well as the relevant publication.