Built on

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Similar

J. R. Fergusson, M. Liguori and E. P. S. Shellard, General CMB and Primordial Bispectrum Estimation I: Mode Expansion, Map-Making and Measures of f NL f_{\rm NL} , Phys. Rev. D82
Original
2010
Cited alongside, same era.
L. Senatore, K. M. Smith and M. Zaldarriaga, Non-Gaussianities in Single Field Inflation and their Optimal Limits from the WMAP 5-year Data , JCAP 1001
Original
2010
Cited alongside, same era.
M. Shiraishi, D. Nitta and S. Yokoyama, Parity Violation of Gravitons in the CMB Bispectrum , Prog.Theor.Phys. 126
Original
2011
Cited alongside, same era.
M. Kamionkowski and T. Souradeep, The Odd-Parity CMB Bispectrum , Phys.Rev. D83
Original
2011
Cited alongside, same era.
M. Shiraishi, D. Nitta, S. Yokoyama, K. Ichiki and K. Takahashi, CMB Bispectrum from Primordial Scalar, Vector and Tensor non-Gaussianities , Prog.Theor.Phys. 125

Then

M. Shiraishi, A. Ricciardone and S. Saga, Parity violation in the CMB bispectrum by a rolling pseudoscalar , JCAP 1311
Original
2013
Later among the works it cites.
F. Elsner and B. D. Wandelt, Efficient Wiener filtering without preconditioning , Astron. Astrophys. 549
Original
2013
Later among the works it cites.
M. Shiraishi, M. Liguori and J. R. Fergusson, General parity-odd CMB bispectrum estimation , JCAP 1405
Original
2014
Later among the works it cites.
J. R. Fergusson, H. F. Gruetjen, E. P. S. Shellard and M. Liguori, Combining power spectrum and bispectrum measurements to detect oscillatory features , Phys. Rev. D91
Original
2015
Later among the works it cites.
J. R. Fergusson, H. F. Gruetjen, E. P. S. Shellard and B. Wallisch, Polyspectra searches for sharp oscillatory features in cosmic microwave sky data , Phys. Rev. D91

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2017

CMB bounds on tensor-scalar-scalar inflationary correlations

Shiraishi, Maresuke, Liguori, Michele, Fergusson, James R.

Understand

The nonlinear interaction between one graviton and two scalars is enhanced in specific inflationary models, potentially leading to distinguishable signatures in the bispectrum of the cosmic microwave background (CMB) anisotropies.

We develop the tools to examine such bispectrum signatures, and show a first application using WMAP temperature data.
We consider several $\ell$-ranges, estimating the $g_{tss}$ amplitude parameter, by means of the so-called separable modal methodology.
We do not find any evidence of a tensor-scalar-scalar signal at any scale.