Superposition of blackbodies and the dipole anisotropy: A possibility to calibrate CMB experiments

@article{Chluba2004SuperpositionOB,
  title={Superposition of blackbodies and the dipole anisotropy: A possibility to calibrate CMB experiments},
  author={J. Chluba and R. Sunyaev},
  journal={Astronomy and Astrophysics},
  year={2004},
  volume={424},
  pages={389-408}
}
The CMB angular temperature fluctuations observed by C and W enable us to place a lower limit on the spectral distortions of the CMB at any angular scale. These distortions are connected with the simple fact that the superposi- tion of blackbodies with different temperatures in general is not a blackbody. We show that in the limit of small temperature fluctuations the superposition of blackbodies leads to a y-type spectral distortion. It is known that the CMB dipole induces a y-type… Expand
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