Tuesday, November 05, 2024
03:30 AM - 05:00 PM
ASD Colloquium (Hybrid)
Cosmoglobe DR2: Global analysis of the microwave and infrared sky
Ingunn Kathrine Wehus and Hans Kristian Kamfjord Eriksen (University of Oslo)
Two lessons learned from Planck was the importance of global analysis of instrumental, astrophysical and cosmological parameters as well as the usefulness of joint analysis of multiple datasets. These lessons has been further developed into a coherent pipeline for global analysis of multiple datasets by BeyondPlanck and Cosmoglobe, which has been successfully applied to joint end-to-end analysis of raw data from WMAP and Planck LFI. The recent Cosmoglobe Data Release 2 generalizes this to the infrared spectrum, performing a reanalysis of the COBE-DIRBE raw data, supported by Planck HFI, WISE, Gaia and COBE-FIRAS. Expanding the upper frequency range of the Cosmoglobe Sky Model from 1 to 240 THz requires a drastically altered thermal dust model, as well as adding models for starlight, CII line emission and dynamical Zodical light emission. This global analysis leads to the strongest constraints on the cosmic infrared background (CIB) spectrum from DIRBE published to date. We will give an introduction to global analysis before presenting our latest results.
Read more about this event Ingunn Kathrine Wehus and Hans Kristian Kamfjord Eriksen (University of Oslo)
Two lessons learned from Planck was the importance of global analysis of instrumental, astrophysical and cosmological parameters as well as the usefulness of joint analysis of multiple datasets. These lessons has been further developed into a coherent pipeline for global analysis of multiple datasets by BeyondPlanck and Cosmoglobe, which has been successfully applied to joint end-to-end analysis of raw data from WMAP and Planck LFI. The recent Cosmoglobe Data Release 2 generalizes this to the infrared spectrum, performing a reanalysis of the COBE-DIRBE raw data, supported by Planck HFI, WISE, Gaia and COBE-FIRAS. Expanding the upper frequency range of the Cosmoglobe Sky Model from 1 to 240 THz requires a drastically altered thermal dust model, as well as adding models for starlight, CII line emission and dynamical Zodical light emission. This global analysis leads to the strongest constraints on the cosmic infrared background (CIB) spectrum from DIRBE published to date. We will give an introduction to global analysis before presenting our latest results.
Wednesday, November 06, 2024
01:00 PM - 02:00 PM
Virtual Chat with the Code 600 Director
Everyone is Welcome!
ACTUAL TIME: 1:10 - 1:55
Read more about this event ACTUAL TIME: 1:10 - 1:55
Thursday, November 14, 2024
12:00 PM - 01:00 PM
SED Director’s Seminar
Please join us for the SED Director’s Seminar hosted by the Gravitational Astrophysics Laboratory, Code 663!
More information to come!
Read more about this event More information to come!
Tuesday, November 19, 2024
03:30 AM - 05:00 PM
ASD Colloquium (Hybrid)
Jacqueline McCleary (Northeastern)
Read more about this event Congratulations to the ASD Winners of 2024 Robert H. Goddard Awards 665/Jonathan Gardner, 662/Michale Loewenstein (Univ of...
Thursday, August 01, 2024Jane Rigby, an astronomer who grew up in Delaware, is the chief scientist of the world’s most powerful telescope. A prolific ...
Friday, May 03, 2024