The presence of Primordial Gravitational Waves in the Cosmic Microwave Background [PDF]
Wytler Cordeiro dos SantosThe General Relativity affirms that any field is a source of gravitational field, thus one should affirm that the energy of Cosmic Microwave Background (CMB) generated primordial gravitational waves. The present article shows that a gravitational wave with dimensionless amplitude $\sim 10^{-5}$ and large wave length $\sim 10$ megaparsecs shifts temperature of CMB radiation about of a part in $10^{5}$.View original: http://arxiv.org/abs/1202.1793
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