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Cosmological Parameters from Eigenmode Analysis of Sloan Digital Sky Survey Galaxy Redshifts

Published online by Cambridge University Press:  23 September 2016

Alexander Szalay ,
Adrian Pope ,
Takahiko Matsubara ,
Michael R. Blanton ,
Daniel J. Eisenstein ,
Jim Gray ,
Bhuvnesh Jain  and
SDSS Collaboration
Alexander Szalay
Affiliation:
Dept. of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA
Adrian Pope
Affiliation:
Dept. of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA
Takahiko Matsubara
Affiliation:
Dept. of Physics and Astrophysics, Nagoya University, Chikusa, Nagoya 464-8602, Japan
Michael R. Blanton
Affiliation:
Center for Cosmology and Particle Physics, Dept. of Physics, New York University, New York, NY 10003, USA
Daniel J. Eisenstein
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
Jim Gray
Affiliation:
Microsoft Bay Area Research Center, San Francisco, CA 94105, USA
Bhuvnesh Jain
Affiliation:
Dept. of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA

Abstract

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We present estimates of cosmological parameters from the application of the Karhunen-Loève transform to the analysis of the 3D power spectrum of density fluctuations using Sloan Digital Sky Survey galaxy redshifts. We use Ωmh and fb = Ωb/Ωm to describe the shape of the power spectrum, σL8g for the (linearly extrapolated) normalization, and β to parametrize linear theory redshift space distortions. on scales k ≤ 0.16hMpc--1, our maximum likelihood values are Ωmh = 0.264 ± 0.043, fb = 0.286 ± 0.065, σL8g = 0.966 ± 0.048, and β = 0.45 ± 0.12. When we take a prior on Ωb from WMAP, we find Ωmh = 0.207 ± 0.030, which is in excellent agreement with WMAP and 2dF. This indicates that we have reasonably measured the gross shape of the power spectrum but we have difficulty breaking the degeneracy between and Ωmh and fb because the baryon oscillations are not resolved in the current spectroscopic survey window function.

Type
Session II: Formation of Large-Scale Structure 75
Information
Symposium - International Astronomical Union , Volume 216: Maps of the Cosmos , 2005 , pp. 129 - 139
Copyright
Copyright © Astronomical Society of the Pacific 2005 

References

Abazajian, K., et al. 2003, AJ, 126, 2081 CrossRefGoogle Scholar
Blanton, M. R., et al. 2003a, AJ, 125, 2276 Google Scholar
Blanton, M. R., et al. 2003b, AJ, 125, 2348 Google Scholar
Blanton, M. R., et al. 2003c, ApJ, 592, 819 Google Scholar
Bond, J. R., Jaffe, A. H., & Knox, L. 2000, ApJ, 533, 19 Google Scholar
Eisenstein, D. J., & Hu, W. 1998, ApJ, 496, 605 Google Scholar
Fixsen, D. J., et al. 1996, ApJ, 473, 576 Google Scholar
Freedman, W. L., et al. 2001, ApJ, 553, 47 Google Scholar
Fukugita, M., et al. 1996, AJ, 111, 1748 CrossRefGoogle Scholar
Gunn, J. E., et al. 1998, AJ, 116, 3040 Google Scholar
Hogg, D. W., Finkbeiner, D. P., Schlegel, D. J., & Gunn, J. E. 2001, AJ, 122, 2129 Google Scholar
Kaiser, N. 1987, MNRAS, 227, 1 Google Scholar
Kunszt, P. Z., Szalay, A. S., & Thakar, A. R. 2001, Mining the Sky, 631 Google Scholar
Matsubara, T., Szalay, A. S., & Pope, A. C. 2004, ApJ, 606, 1 Google Scholar
Norberg, P., et al. 2001, MNRAS, 328, 64 Google Scholar
Percival, W. J., et al. 2001, MNRAS, 327, 1297 Google Scholar
Petrosian, V. 1976, ApJ, 209, L1 CrossRefGoogle Scholar
Pier, J. R., et al. 2003, AJ, 125, 1559 Google Scholar
Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 525 Google Scholar
Smith, J. A., et al. 2002, AJ, 123, 2121 CrossRefGoogle Scholar
Spergel, D. N., et al. 2003, ApJS, 148, 175 Google Scholar
Stoughton, C., et al. 2002, AJ, 123, 485 Google Scholar
Strauss, M. A., et al. 2002, AJ, 124, 1810 Google Scholar
Szalay, A. S., Matsubara, T., & Landy, S. D. 1998, ApJ, 498, L1 Google Scholar
Szalay, A. S., et al. 2003, ApJ, 591, 1 CrossRefGoogle Scholar
Tegmark, M., Hamilton, A. J. S., Strauss, M. A., Vogeley, M. S., & Szalay, A. S. 1998, ApJ, 499, 555 Google Scholar
Tegmark, M., et al. 2004, AJ, 606, 702 Google Scholar
Therrien, C. W. 1992, Discrete Random Signals and Statistical Signal Processing (New Jersey: Prentice-Hall)Google Scholar
Uomoto, A., et al. 1999, BAAS, 31, 1501 Google Scholar
Vogeley, M. S., & Szalay, A. S. 1996, ApJ, 465, 34 Google Scholar
York, D. G., et al. 2000, AJ, 120, 1579 Google Scholar
Zehavi, I., et al. 2002, ApJ, 571, 172 Google Scholar