Corpus ID: 119114042

Hint of relic gravitational waves in the Planck and WMAP data

@article{Zhao2014HintOR,
  title={Hint of relic gravitational waves in the Planck and WMAP data},
  author={W. Zhao and C. Cheng and Q. Huang},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  year={2014}
}
Relic gravitational waves (RGWs) leave well-understood imprints on the anisotropies in the temperature and polarization of cosmic microwave background (CMB) radiation. In the TT and TE information channels, which have been well observed by WMAP and Planck missions, RGWs compete with density perturbations mainly at low multipoles. It is dangerous to include high-multipole CMB data in the search for gravitational waves, as the spectral indices may not be constants. In this paper, we repeat our… Expand
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