Parameterization of temperature and spectral distortions in future CMB experiments

2014/02/28 by Cyril Pitrou, Albert Stebbins · 2 citations
Physics and Astronomy · #Anisotropy #Astrophysics #Compton scattering #Computational physics #Cosmic microwave background #Cosmology and Gravitation Theories #Electron #Ionosphere and magnetosphere dynamics #Physics #Quantum mechanics #Scattering #Solar and Space Plasma Dynamics #Spectrum (functional analysis) #Statistical physics #Theoretical physics #Truncation (statistics) #astro-ph.CO #gr-qc

paper · pdf · doi:10.1007/s10714-014-1806-z

published as Gen. Rel. Grav. 46 (2014) 11, 1806 · 5 pages; discussion on chemical potential added

openalex publication_date 2014/10/14 · arxiv created 2015/01/05 · arxiv updated 2015/01/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

CMB spectral distortions are induced by Compton collisions with electrons. We review the various schemes to characterize the anisotropic CMB with a non-Planckian spectrum. We advocate using logarithmically averaged temperature moments as the preferred language to describe these spectral distortions, both for theoretical modeling and observations. Numerical modeling is simpler, the moments are frame-independent, and in terms of scattering the mode truncation is exact.

Citations

• The intrinsic B-mode polarisation of the Cosmic Microwave Background
• Superposition of blackbodies and the dipole anisotropy: A possibility to calibrate CMB experiments
• Geocentrism reexamined

Cited by

• Radiative transport of relativistic species in cosmology
• Impact of polarization on the intrinsic cosmic microwave background bispectrum