How to measure CMB spectral distortions with an imaging telescope

23 Feb 2020 Mukherjee Suvodip Silk Joseph Wandelt Benjamin D.

We propose the implementation of an imaging telescope in combination with an inter-frequency calibrator to measure the spectral shape of the microwave sky by exploiting the differences in the sky intensity between multiple pairs of frequency channels. By jointly sampling the cosmological and foreground parameters in a Bayesian framework for $600$ instrument configurations, we determine the minimum calibration accuracy required in order to obtain measurements of spectral distortions and simultaneously measure spectral and spatial fluctuations of the CMB... (read more)

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  • COSMOLOGY AND NONGALACTIC ASTROPHYSICS
  • INSTRUMENTATION AND METHODS FOR ASTROPHYSICS