Velkomin / Welcome 👋
Síðan er á ensku en hægt er að lesa aðeins um Skuggsjá hér / We work on experiments probing the early universe, the nature of dark matter, and the birth of the first stars. From here you can take a quick tour of our efforts, read about our projects, or get in touch.

A key aspect of our research at the University of Iceland and Stockholm University focuses on optics design, characterization, and technology development for telescopes operating at millimetre wavelengths and the development of novel metamaterial resonators.
Our efforts are supported by the Science Institute at the University of Iceland, The Stockholm University Physics Department and the Oskar Klein Centre for Cosmoparticle Physics. Our group efforts are funded by the European Research Council, the Icelandic Reseach Fund, the Swedish National Space Agency, the Swedish Research Council, the Swedish Foundation for International Cooperation in Research and Higher Education, the European Space Agency, and the Knut and Allice Wallenberg Foundation. We are truly thankful to these funding agencies!


Six lab members attended SPIE Astronomical Telescope and Instrumentation that took place in Copnenhagen in early July. Our group members presented six posters at the conference.

Members of the research group have been working on a paper the describes the development of microwave absorbers. The paper, led by Dr. Gaganpreet Singh, combines aspects of material design, measurement, and state-of-the art simulations run on High Performance Computing resources availabe to the group through Stockholm University. The paper was published in Applied Optics as Editor’s pick and is available on the arXiv as well.

We had the privilege of welcoming Professor Jeffrey Mcmahon to our lab last week. Jeff is a pioneer in microwave optics who has made major contributions to some of the most advanced telescopes on the planet. During his visit, Jeff gave a talk for the public with the title: From Curiosity to the Cosmos: A Tale of Humanity’s Progress. Just before the talk was about to start, strong northern lights turned on above Reykjavik.

Members of the CMBeam team went on a site visit to Hedinn hf to track progress on the construction of our new cryostat. This cylindrical structure, approximately 1.5 m in diameter and 1.0 m in length, consists of three thermal stages: a 300-K vacuum vessel, a 40-K radiation shield, and a 4-K cold stage. The two cryogenic stages are cooled by a Bluefors PT420 pulse-tube cryocooler and are mechanically supported by six thermally isolating G10 flexures positioned near the mid-plane of the system. The cryostat provides sufficient volume to perform holographic measurements of the full three-lens refractor optical systems designed for the Taurus experiment as well as other refracting telescopes and optical tubes for the cosmic microwave background. This system represents the first cryostat ever built in Iceland.