7–11 Jul 2025
Teaching and Learning Centre (TLC)
Europe/London timezone
Reminder - registration deadline for poster and talk presenters is 6th June (20th June for all other participants).

The C-Band All-Sky Northern Survey (C-BASS N)

9 Jul 2025, 16:25
15m
OCW017

OCW017

Ogden Centre West
Talk Galactic Foregrounds at Low Frequencies and CMB Cosmology: Current Challenges and Opportunities Galactic Foregrounds at Low Frequencies and CMB Cosmology: Current Challenges and Opportunities

Description

We present results from the C-BASS Northern survey. The survey covers the whole northern sky above declination -15.6 degrees with data taken in both total intensity and linear polarization at 4.76 GHz and with an angular resolution of 44 arcmin. The primary aims of C-BASS are to support CMB studies by improving our understanding of contaminating foreground emission, especially in polarization, and to study the radio emission of the Galaxy. Here we present the northern maps and derived data products. We will discuss the polarized spectral index distributions measured using C-BASS N data in combination with WMAP and Planck, and their implications for measurements of the CMB B-mode polarization. We will also highlight results from papers accompanying the up-coming data release which present analysis of the absolute intensity background, morphology of the polarized structures, spatial power spectra of the polarized synchrotron foregrounds and results on Faraday rotation in the interstellar medium.

Author

Angela Taylor (University of Oxford)

Presentation materials

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