CHIPASS re-analysis

The low-frequency foreground sky comprise a complicated mixture of synchrotron, AME, and free-free emission that requires a long frequency lever arm to resolve robustly. Observing half of the sky at a frequency of 1.4 GHz and an angular resolution of 14 arcmin, the CHIPASS data set offers a unique window on synchrotron emission. These data have been made available to the Cosmoglobe project, and is currently in the process of being integrated.

Preliminary CHIPASS map produced from raw TOD using a stand-alone Python test code


  • Raw data has been sent from Prof. M. Calabretta Oslo, and converted to FITS format

  • Commander implementation has not yet started

  • Open to all interested parties; new collaborators are very welcome!

Project scope:

  • Develop Commander module for CHIPASS mapmaking
  • Integrate into Cosmoglobe Sky Model
  • Constrain synchrotron emission on small angular scale

Project team:

  • Mark Calabretta
  • Daniel Herman
  • Håvard Tveit Ihle (Coordinator)
  • Duncan Watts

How to get involved:

If you want to get involved, please send Håvard Tveit Ihle an email

Published May 2, 2022 2:42 PM - Last modified May 2, 2022 2:46 PM