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Spatial Separation of Molecular Conformers and Clusters
10:37

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Published on: January 9, 2014

Redshift-space distortions.

Will J Percival1, Lado Samushia, Ashley J Ross

  • 1Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UK. will.percival@port.ac.uk

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|November 16, 2011
PubMed
Summary
This summary is machine-generated.

Redshift-space distortions (RSDs) measurements from upcoming galaxy surveys will precisely test general relativity on large scales. Analyzing RSDs requires correcting for systematic effects to maximize cosmological insights.

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Area of Science:

  • Cosmology
  • Astrophysics
  • General Relativity

Background:

  • Redshift-space distortions (RSDs) are a known effect in galaxy surveys.
  • Linear theory of RSDs has been established for 25 years.
  • RSDs have been observed in numerous galaxy surveys.

Purpose of the Study:

  • To review RSD theory and its ubiquity.
  • To analyze potential systematic effects in future high-precision RSD measurements.
  • To prepare for next-generation galaxy surveys.

Main Methods:

  • Review of established RSD theory.
  • Analysis of systematic deviations from basic RSD models.
  • Highlighting recent research on RSDs.

Main Results:

  • RSDs are ubiquitous in galaxy distribution.
  • High-precision RSD measurements from future surveys will require careful correction of systematic effects.
  • Future surveys will yield unprecedented data for cosmological tests.

Conclusions:

  • RSD measurements offer powerful tests of general relativity on large scales.
  • Understanding and correcting systematic effects is crucial for future RSD studies.
  • Next-generation galaxy surveys will significantly advance our understanding of cosmology.