Abstract
We show that the redshift-space quadrupole will be a powerful tool for constraining dark energy even if the baryon oscillations are missing from the monopole power spectrum and bias is scale and time dependent. We calculate the accuracy with which next-generation galaxy surveys such as KAOS will measure the quadrupole power spectrum, which gives the leading anisotropies in the power spectrum in redshift space due to linear velocity, and the so-called "Finger of God" and Alcock-Paczynski effects. Combining the monopole and quadrupole power spectra, in the complete absence of baryon oscillations (Ωb = 0), leads to a roughly 500% improvement in constraints on dark energy compared with those from the monopole spectrum alone.
| Original language | English |
|---|---|
| Article number | 051301 |
| Journal | Physical Review Letters |
| Volume | 94 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Feb 11 2005 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
Dark energy reflections in the redshift-space quadrupole. / Yamamoto, Kazuhiro; Bassett, Bruce A.; Nishioka, Hiroaki.
In: Physical Review Letters, Vol. 94, No. 5, 051301, 11.02.2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dark energy reflections in the redshift-space quadrupole
AU - Yamamoto, Kazuhiro
AU - Bassett, Bruce A.
AU - Nishioka, Hiroaki
PY - 2005/2/11
Y1 - 2005/2/11
N2 - We show that the redshift-space quadrupole will be a powerful tool for constraining dark energy even if the baryon oscillations are missing from the monopole power spectrum and bias is scale and time dependent. We calculate the accuracy with which next-generation galaxy surveys such as KAOS will measure the quadrupole power spectrum, which gives the leading anisotropies in the power spectrum in redshift space due to linear velocity, and the so-called "Finger of God" and Alcock-Paczynski effects. Combining the monopole and quadrupole power spectra, in the complete absence of baryon oscillations (Ωb = 0), leads to a roughly 500% improvement in constraints on dark energy compared with those from the monopole spectrum alone.
AB - We show that the redshift-space quadrupole will be a powerful tool for constraining dark energy even if the baryon oscillations are missing from the monopole power spectrum and bias is scale and time dependent. We calculate the accuracy with which next-generation galaxy surveys such as KAOS will measure the quadrupole power spectrum, which gives the leading anisotropies in the power spectrum in redshift space due to linear velocity, and the so-called "Finger of God" and Alcock-Paczynski effects. Combining the monopole and quadrupole power spectra, in the complete absence of baryon oscillations (Ωb = 0), leads to a roughly 500% improvement in constraints on dark energy compared with those from the monopole spectrum alone.
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U2 - 10.1103/PhysRevLett.94.051301
DO - 10.1103/PhysRevLett.94.051301
M3 - Article
AN - SCOPUS:18144367310
VL - 94
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 5
M1 - 051301
ER -