Fredagskollokvium: Optical systematics in next-generation CMB experiments

Jón Gudmundsson, Senior Research Scientist at Stockholm University Physics Department and the Oskar Klein Centre for Cosmoparticle Physics

Jón Gudmundsson,
Stockholm University Physics Department and Oskar Klein Centre for Cosmoparticle Physics.

Next-generation experiments studying the cosmic microwave background (CMB) are planning to deploy tens of thousands of detector elements. This effort has the potential to dramatically improve map sensitivities and therefore advance our understanding of numerous astrophysical observables accessible at millimetre wavelengths, including a hypothesized signal from primordial gravitational waves.

This technological advancement, however, is at risk of being curtailed by subtle instrument errors that induce systematics. A predominant group of potential systematic effects are related to the optical systems (the telescopes).

In this talk, I will introduce the key upcoming CMB experiments of the next decade, discuss various optical modeling techniques that inform the design of these experiments, and discuss how those techniques will influence future data analysis efforts.

lines, lenses, red, orange
Example output of a computationally intensive full-wave electromagnetic simulation for a typical optical receiver used on next-generation experiments operating at mm wavelengths.

Please join via Zoom at

Meeting ID: 655 6137 3889
Passcode: 623205
Attendees will be muted during the colloquium, but will have the opportunity to ask questions at the end by clicking on the "raise hand” button (or send a request to me via chat).

Emneord: fredagskollokvium, Cosmic Microwave Background (CMB), observations
Publisert 4. feb. 2020 08:37 - Sist endret 18. sep. 2020 09:53