Cosmic microwave background anisotropies: Has a gravitational wave background been observed?

1993 ◽  
Vol 47 (6) ◽  
pp. 2619-2621 ◽  
Author(s):  
Alexandre Dolgov ◽  
Joseph Silk
Keyword(s):  
Cosmic Microwave Background ◽  
Gravitational Wave ◽  
Microwave Background ◽  
Gravitational Wave Background ◽  
Microwave Background Anisotropies

THE POLARIZATION OF THE COSMIC MICROWAVE BACKGROUND DUE TO PRIMORDIAL GRAVITATIONAL WAVES

2006 ◽  
Vol 21 (12) ◽  
pp. 2459-2479 ◽  
Author(s):  
BRIAN G. KEATING ◽  
ALEXANDER G. POLNAREV ◽  
NATHAN J. MILLER ◽  
DEEPAK BASKARAN
Keyword(s):  
Cosmic Microwave Background ◽  
Gravitational Wave ◽  
Gravitational Waves ◽  
Microwave Background ◽  
Primordial Gravitational Waves ◽  
Cmb Polarization ◽  
Cosmological Inflation ◽  
Gravitational Wave Background ◽  
Review Current ◽  
Rule Out

We review current observational constraints on the polarization of the Cosmic Microwave Background (CMB), with a particular emphasis on detecting the signature of primordial gravitational waves. We present an analytic solution to the Polanarev approximation for CMB polarization produced by primordial gravitational waves. This simplifies the calculation of the curl, or B-mode power spectrum associated with gravitational waves during the epoch of cosmological inflation. We compare our analytic method to existing numerical methods and also make predictions for the sensitivity of upcoming CMB polarization observations to the inflationary gravitational wave background. We show that upcoming experiments should be able either detect the relic gravitational wave background or completely rule out whole classes of inflationary models.

scholarly journals A CMB B-mode Search with Three Years of BICEP Observations

2012 ◽  
Vol 8 (S288) ◽  
pp. 61-67
Author(s):  
Colin Bischoff ◽  
Keyword(s):  
Cosmic Microwave Background ◽  
Gravitational Wave ◽  
Gravitational Waves ◽  
Final Analysis ◽  
Integration Time ◽  
South Pole ◽  
Microwave Background ◽  
Promising Technique ◽  
Primordial Gravitational Waves ◽  
Gravitational Wave Background

AbstractThe search for B-mode, or curl-type, polarization in the Cosmic Microwave Background is the most promising technique to constrain or detect primordial gravitational waves predicted by the theory of inflation. The Bicep telescope, which observed from the South Pole for three years from 2006 through 2008, is the first experiment specifically designed to target this signal. We review the observational motivations for inflation, the advantages of B-mode observations as a technique for detecting the gravitational wave background, and the design features of Bicep that optimize it for this search. The final analysis of all three seasons of Bicep data is in progress, representing a 50% increase in integration time compared to the result from Chiang et al. (2010). A preview of the three year result includes E-mode and B-mode maps, as well as the projected constraint on r, the tensor-to-scalar ratio.

scholarly journals Multimessenger cosmology: Correlating cosmic microwave background and stochastic gravitational wave background measurements

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
Peter Adshead ◽  
Niayesh Afshordi ◽  
Emanuela Dimastrogiovanni ◽  
Matteo Fasiello ◽  
Eugene A. Lim ◽  
...  
Keyword(s):  
Cosmic Microwave Background ◽  
Gravitational Wave ◽  
Microwave Background ◽  
Gravitational Wave Background

The Gravitational Wave Contribution to the Cosmic Microwave Background Anisotropies

1999 ◽  
Vol 518 (2) ◽  
pp. 562-569 ◽  
Author(s):  
Alessandro Melchiorri ◽  
Mikhail Vasil'evich Sazhin ◽  
Vladimir V. Shulga ◽  
Nicola Vittorio
Keyword(s):  
Cosmic Microwave Background ◽  
Gravitational Wave ◽  
Microwave Background ◽  
Microwave Background Anisotropies

scholarly journals What's behind acoustic peaks in the cosmic microwave background anisotropies

2002 ◽  
Vol 110 ◽  
pp. 173-178
Author(s):  
C. Baccigalupi ◽  
A. Balbi ◽  
S. Matarrese ◽  
F. Perrotta ◽  
N. Vittorio
Keyword(s):  
Cosmic Microwave Background ◽  
Microwave Background ◽  
Microwave Background Anisotropies
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