The Python Sky Model 3 software

Understand

The Python Sky Model (PySM) is a Python package used by Cosmic Microwave Background (CMB) experiments to simulate maps, in HEALPix pixelization, of the various diffuse astrophysical components of Galactic emission relevant at CMB frequencies (i.e.

• dust, synchrotron, free-free and Anomalous Microwave Emission), as well as the CMB itself.
• These maps may be integrated over a given instrument bandpass and smoothed with a given instrument beam.
• PySM 2, released in 2016, has become the de-facto standard for simulating Galactic emission, for example it is used by CMB-S4, Simons Observatory, LiteBird, PICO, CLASS, POLARBEAR and other CMB experiments, as shown by the 80+ citations of the PySM 2 publication.