Non-detection of a statistically anisotropic power spectrum in large-scale structure

@article{Pullen2010NondetectionOA,
  title={Non-detection of a statistically anisotropic power spectrum in large-scale structure},
  author={Anthony R. Pullen and Christopher M. Hirata},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2010},
  volume={2010},
  pages={027-027}
}
  • A. Pullen, C. Hirata
  • Published 2 March 2010
  • Physics
  • Journal of Cosmology and Astroparticle Physics
We search a sample of photometric luminous red galaxies (LRGs) measured by the Sloan Digital Sky Survey (SDSS) for a quadrupolar anisotropy in the primordial power spectrum, in which P(k) is an isotropic power spectrum P[overbar](k) multiplied by a quadrupolar modulation pattern. We first place limits on the 5 coefficients of a general quadrupole anisotropy. We also consider axisymmetric quadrupoles of the form P(k) = P[overbar](k){1+g_*[k[circuflex] ∙ n[circumflex]^2 − (1/3)]} where n… 
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