Simulating instrumental systematics of Cosmic Microwave Background experiments with s4cmb

Understand

The observation of cosmic microwave background (CMB) anisotropies is one of the key probes of physical cosmology.

• The weak nature of this signal has driven the construction of increasingly complex and sensitive experiments observing the sky at multiple frequencies with thousands of polarization sensitive detectors.
• Given the high sensitivity of such experiments, instrumental systematic effects can become the limiting factor towards the full scientific exploitation of their data.
• In this paper we present s4cmb (Systematics for CMB), a Python package designed to simulate raw data streams in time domain of modern CMB experiments based on bolometric technology, and to inject in these realistic instrumental systematics effects.