Title: Baryon Acoustic Oscillations SUPPLEMENTARY SLIDES FOR arXiv'0910'5224
1Baryon Acoustic OscillationsSUPPLEMENTARY SLIDES
FORarXiv.0910.5224
- Bruce Bassett
- SAAO UCT
- Renée Hlozek
- University of Oxford
The use of these slides is welcomed, with credit,
in any non-profit talks or presentations
2The Beauty of Standard Volumes
Us
3Comparing BAO and Alcock-Paczynski (AP)
constraints
4Rings of Power Superposed
A single ring of galaxies at the characteristic
BAO radius, on a plane transverse to the line of
sight.
5Rings of Power Superposed
We now superpose random rings of galaxies, all
with the same BAO radius
6Rings of Power Superposed
7Rings of Power Superposed
8Rings of Power Superposed
9Rings of Power Superposed
10Rings of Power Superposed
Detecting the characteristic radius is now a
statistical problem
11Statistical Standard Rulers
12Power Spectrum Errors
13Illustrating Shot NoiseIdentifying the
underlying pattern
14Shot Noise
15Shot Noise
16Shot Noise
17Illustrating Cosmic Variance Identifying all the
modes
18Cosmic Variance
19Cosmic Variance
20Cosmic Variance
21BAO Nonlinearity
BAO ring is shifted inwards and broadened
22Broadening peak smoothes oscillations
23(No Transcript)
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25Nonlinear broadening makes the characteristic
BAO scale harder to detect