SPIDER (Submillimeter Probe of the Inflationary Dynamics of the Early Universe) is a balloon-borne experiment designed to map the polarized Cosmic Microwave Background (CMB) on large angular scales. It first launched in early 2015 from McMurdo station in Antarctica and successfully performed a 16-day circumpolar flight while mapping roughly 10% of the southern galactic sky. Its 2400 bolometers, measuring at 90 and 150 GHz, collected a large amount of data, whose processing, both in terms of data volume and systematic effects, poses a challenge.
The raw time-ordered SPIDER data were integrated in the novel global Bayesian framework Cosmoglobe, which is an effort aimed at jointly analyzing a variety of different CMB data sets in order to combine their sensitivities and frequency coverages.
In this talk, I will summarize SPIDER’s raw data preprocessing, the further joint analysis in the Cosmoglobe framework, and show preliminary results.
Right: Harald Thommesen, Postdoc in Cosmology and Extragalactic Astronomy research section, Institute of Theoretical Astrophysics. Photo:UiO.
This Friday colloquium will be hybrid. Attendees can therefore participate either in-person or via Zoom. Please join via Zoom at
https://uio.zoom.us/j/69001043754?pwd=cEJpbVE5ci9PdWNtRld2TDNNcGtKdz09
Meeting ID:690 0104 3754
Passcode: PeiseStua3
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 via chat).