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Title: «Cosmoglobe Data Release 2 and advanced dust modelling»
Abstract:
The Cosmoglobe collaboration has recently completed the second data release, the reanalysis of the COBE-DIRBE data, producing new starlight emission models, zodiacal light models, cosmic infrared background (CIB) detections and new Milky Way dust models.
I will give an overview of our results from this second data release, with a focus on the new dust models. This new dust model simplifies previously used dust models, and improves the interpretation, by breaking the old single component dust model into four physically motivated dust components. This is further motivated by the fantastic fit the dust has to both the DIRBE and Planck HFI data.
Dust represents a significant systematic noise contribution to cosmic microwave background observations, so this new dust model will be crucial for future detection of signals important for understanding the earliest moments of our Universe, cosmic inflation.
Image New four component dust model. Credits: Cosmoglobe Collaboration
Venue: Peisestua (room 304), Svein Rosselands hus (https://www.uio.no/om/finn-fram/omrader/blindern/bl26/)
**All are welcome to join!**
More upcoming seminars:
https://www.mn.uio.no/astro/forskning/aktuelt/arrangementer/gjesteforelesninger-seminarer/fredagskollokvium/2026/
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Institute of Theoretical Astrophysics, University of Oslo, Sognsveien 77B, 0855 Oslo, Norge, Oslo, Norway
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