Built on

E. Pierpaoli, “Point sources in the MAP sky maps,” Astrophys. J. 589
2003
Earlier work this paper cites.
J. Dunkley, M. Bucher, P. G. Ferreira, K. Moodley and C. Skordis, “Fast and reliable MCMC for cosmological parameter estimation,” Mon. Not. Roy. Astron. Soc. 356
2005
Earlier work this paper cites.
M. Doran, “CMBEASY:: an Object Oriented Code for the Cosmic Microwave Background,” JCAP 0510
2005
Earlier work this paper cites.
K. M. Gorski, E. Hivon, A. J. Banday, B. D. Wandelt, F. K. Hansen, M. Reinecke and M. Bartelman, “HEALPix – a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere,” Astrophys. J. 622
2005
Earlier work this paper cites.
C. Armendariz-Picon, “Footprints of Statistical Anisotropies,” JCAP 0603
2006
Earlier work this paper cites.

Similar

T. Souradeep, A. Hajian and S. Basak, “Measuring Statistical Isotropy of CMB Anisotropy,” New Astron. Rev. 50
2006
Cited alongside, same era.
A. R. Pullen and M. Kamionkowski, “Cosmic Microwave Background Statistics for a Direction-Dependent Primordial Power Spectrum,” Phys. Rev. D 76
Original
2007
Cited alongside, same era.
L. Ackerman, S. M. Carroll and M. B. Wise, “Imprints of a Primordial Preferred Direction on the Microwave Background,” Phys. Rev. D 75
2007
Cited alongside, same era.
C. Armendariz-Picon, “Creating Statistically Anisotropic and Inhomogeneous Perturbations,” JCAP 0709
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2007
Cited alongside, same era.
A. E. Gumrukcuoglu, C. R. Contaldi and M. Peloso, “Inflationary perturbations in anisotropic backgrounds and their imprint on the CMB,” JCAP 0711
Original

Then

A. R. Liddle, “Information criteria for astrophysical model selection,” Mon. Not. Roy. Astron. Soc. Lett. 377
2007
Later among the works it cites.
S. Ando and M. Kamionkowski, “Nonlinear Evolution of Anisotropic Cosmological Power,” Phys. Rev. Lett. 100
Original
2008
Closest in time.
T. S. Pereira, C. Pitrou and J. P. Uzan, “Theory of cosmological perturbations in an anisotropic universe,” JCAP 0709
Original
2008
Closest in time.
E. Akofor, A. P. Balachandran, S. G. Jo, A. Joseph and B. A. Qureshi, “Direction-Dependent CMB Power Spectrum and Statistical Anisotropy from Noncommutative Geometry,” JHEP 0805
Original
2008
Closest in time.

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2008

Bayesian Limits on Primordial Isotropy Breaking

Armendariz-Picon, C., Pekowsky, Larne

Understand

It is often assumed that primordial perturbations are statistically isotropic, which implies, among other properties, that their power spectrum is invariant under rotations.

In this article, we test this assumption by placing model-independent bounds on deviations from rotational invariance of the primordial spectrum.
Using five-year WMAP cosmic microwave anisotropy maps, we set limits on the overall norm and the amplitude of individual components of the primordial spectrum quadrupole.
We find that there is no significant evidence for primordial isotropy breaking, and that an eventually non-vanishing quadrupole has to be subdominant.

Built on

E. Pierpaoli, “Point sources in the MAP sky maps,” Astrophys. J. 589
2003
Earlier work this paper cites.
J. Dunkley, M. Bucher, P. G. Ferreira, K. Moodley and C. Skordis, “Fast and reliable MCMC for cosmological parameter estimation,” Mon. Not. Roy. Astron. Soc. 356
2005
Earlier work this paper cites.
M. Doran, “CMBEASY:: an Object Oriented Code for the Cosmic Microwave Background,” JCAP 0510
2005
Earlier work this paper cites.
K. M. Gorski, E. Hivon, A. J. Banday, B. D. Wandelt, F. K. Hansen, M. Reinecke and M. Bartelman, “HEALPix – a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere,” Astrophys. J. 622
2005
Earlier work this paper cites.
C. Armendariz-Picon, “Footprints of Statistical Anisotropies,” JCAP 0603
2006
Earlier work this paper cites.