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The Enhancement of BAO in the SDSS MGS
- Source :
- Proceedings of the International Astronomical Union. 11:145-145
- Publication Year :
- 2015
- Publisher :
- Cambridge University Press (CUP), 2015.
-
Abstract
- We show that redshift-space distortions of galaxy correlations have a strong effect on correlation functions with the signature of the Baryon Acoustic Oscillations (BAO). Near the line of sight, the features become sharper as a result of redshift-space distortions. We analyze the SDSS DR7 main-galaxy sample (MGS), splitting the sample into slices 2.5 deg on the sky in various rotations. Measuring 2D correlation functions in each slice, we do see a sharp bump along the line of sight. Using Mexican-hat wavelets, we localize it to (110 ± 10) h − 1 Mpc and estimate its significance at about 4σ.
- Subjects :
- Physics
Line-of-sight
media_common.quotation_subject
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Sample (graphics)
Galaxy
Wavelet
Space and Planetary Science
Sky
Baryon acoustic oscillations
Signature (topology)
Astrophysics::Galaxy Astrophysics
media_common
Subjects
Details
- ISSN :
- 17439221 and 17439213
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Proceedings of the International Astronomical Union
- Accession number :
- edsair.doi...........9c2d492ff2eeff4cd7aa89500bd763de