Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-25T15:44:52.532Z Has data issue: false hasContentIssue false
  • English
  • Français

Semi-analytical study on the generic degeneracy for galaxy clustering measurements

Published online by Cambridge University Press:  01 July 2015

Alejandro Guarnizo ,
Luca Amendola ,
Martin Kunz  and
Adrian Vollmer
Alejandro Guarnizo
Affiliation:
Institut Für Theoretische Physik, Ruprecht-Karls-Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
Luca Amendola
Affiliation:
Institut Für Theoretische Physik, Ruprecht-Karls-Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
Martin Kunz
Affiliation:
Département de Physique Théorique and Center for Astroparticle Physics, Université de Genève, Quai E. Ansermet 24, CH-1211 Genève 4, Switzerland
Adrian Vollmer
Affiliation:
Institut Für Theoretische Physik, Ruprecht-Karls-Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

From the galaxy power spectrum in redshift space, we derive semi-analytical results on the generic degeneracy of galaxy clustering measurements. Defining the observables A = Gbσ8 and R = Gfσ8, (being G the growth function, b the bias, f the growth rate, and σ8 the amplitude of the power spectrum), we perform a Fisher matrix formalism to forecast the expected precision of these quantities for a Euclid-like survey. Among the results we found that galaxy surveys have generically a slightly negative correlation between A and R, and they can always measure R about 3.7 to 4.7 times better than A.

Keywords

cosmology: observationscosmology: theorymethods: statisticalsurveys
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S306: Statistical Challenges in 21st Century Cosmology , May 2014 , pp. 347 - 350
Copyright
Copyright © International Astronomical Union 2015 

References

Amendola, L., Kunz, M., Motta, M., Saltas, I. D., & Sawicki, I. 2013, Phys. Rev. D, 87, 023501Google Scholar
Amendola, L., Fogli, S., Guarnizo, A., Kunz, M., & Vollmer, A. 2014, Phys. Rev. D, 89, 063538CrossRefGoogle Scholar
Amendola, L., et al.(Euclid Theory Working Group) 2013, Living Rev. Relativity, 16, 6CrossRefGoogle Scholar
Percival, W. J. & White, M. 2009, MNRAS 393 297–308Google Scholar
Raccanelli, A., Bertacca, D., Pietrobon, D., Schmidt, F., Samushia, L., Bartolo, N., Dor, O., Matarrese, S., & Percival, W. J. 2013, MNRAS 436 89–100CrossRefGoogle Scholar
Song, Y.-S. & Kayo, I. 2009, MNRAS 407 1123–1127Google Scholar
Song, Y.-S. & Percival, W. J. 2009, J. Cosmol. Astropart. Phys., 0910, 004CrossRefGoogle Scholar