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Cosmology & eXtragalactics

Welcome on the pages of the COSMology & eXtragalactics (COSM!X) team.

 

Our research goes from the primordial fluctuations in the Universe to its structuration at the largest scales in the recent era. We study how the cosmic web elements are forming and evolving both through modelling and observations.

 

 

Latest news

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1 month 3 weeks ago

In 2013, the Planck results showed, for the first time, a discrepancy in the cosmological parameters determined from the cosmic microwave background (CMB) and the number counts of galaxy clusters. This inconsistency was also confirmed by the 2015 Planck results and by independent weak lensing and X-ray observation analyses. Researchers at IAS performed a re-analysis, using the 2016 Planck results, and have shown that the CMB and galaxy cluster data now actually converge to the standard model of cosmology, with cold dark matter and a cosmological constant.

3 months 1 week ago

The Gruber Foundation announcement has just been posted on May 10 at 8 am local time (Yale time) : https://gruber.yale.edu/cosmology

The Gruber Foundation is pleased to present the 2018 Cosmology Prize to the Planck Team, and to Jean-Loup Puget and Nazzareno Mandolesi, the leaders of the HFI and LFI instrument consortia, for mapping the temperature and polarization of the cosmic microwave background radiation with the ESA Planck spacecraft.

4 months 3 weeks ago

IAS has a new and exciting arrival: a new mobile dilution cryostat has been built and delivered by BlueFors Cryogenics, allowing us to measure detectors and detection chain elements at sub-Kelvin temperatures. Irradiation of highly sensitive detectors by cosmic rays is a daunting problem for many space missions, and the IAS is among the laboratories that have been investigating this problem since the launch of Planck-HFI.

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