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8 papers · 2 filters
The baryon acoustic oscillation peak: a flexible standard ruler
Boudewijn F. Roukema
For about a decade, the baryon acoustic oscillation (BAO) peak at about 105 Mpc/h has provided a standard ruler test of the LCDM cosmological model, a member of the Friedmann--Lema…
Observational Challenges for the Standard FLRW Model
Thomas Buchert, Alan A. Coley, Hagen Kleinert +2
We summarise some of the main observational challenges for the standard Friedmann-Lemaitre-Robertson-Walker cosmological model and describe how results recently presented in the pa…
Improving Cosmological Distance Measurements Using Twin Type Ia Supernovae
H. K. Fakhouri, K. Boone, G. Aldering +41
We introduce a method for identifying "twin" Type Ia supernovae, and using them to improve distance measurements. This novel approach to Type Ia supernova standardization is made p…
Modeling Lyman-α Forest Cross-Correlations with LyMAS
Cassandra Lochhaas, David H. Weinberg, Sébastien Peirani +6
We use the Ly- Mass Association Scheme (LyMAS; Peirani et al. 2014) to predict cross-correlations at between dark matter halos and transmitted flux in the Ly- forest,…
The Low Redshift survey at Calar Alto (LoRCA)
J. Comparat, C. -H. Chuang, S. Rodriguez-Torres +13
The Baryon Acoustic Oscillation (BAO) feature in the power spectrum of galaxies provides a standard ruler to measure the accelerated expansion of the Universe. To extract all avail…
Is the baryon acoustic oscillation peak a cosmological standard ruler?
Boudewijn F. Roukema, Thomas Buchert, Hirokazu Fujii +1
In the standard model of cosmology, the Universe is static in comoving coordinates; expansion occurs homogeneously and is represented by a global scale factor. The baryon acoustic…