Baryon Acoustic Oscillation Measurements - Multi-Survey Compilation

1. SOURCE DATA ORIGINS

### 1.1 DESI Collaboration Data

#### Correlation Function FITS Files

**Files**:

- `cf_lya_x_lya_exp.fits` - Lyman-α × Lyman-α correlation functions

- `cf_lya_x_lyb_exp.fits` - Lyman-α × Lyman-β correlation functions

- `cf_qso_x_lya_exp.fits` - QSO × Lyman-α cross-correlations

- `cf_qso_x_lyb_exp.fits` - QSO × Lyman-β cross-correlations

**Principal Investigators**:

- DESI Collaboration (500+ members)

- Lead: Michael Levi (LBNL), David Schlegel (LBNL), et al.

- Lyα Working Group Leads: Andreu Font-Ribera, Julien Guy, et al.

**Source Repository**:

- https://data.desi.lbl.gov/

- Data Release 1 (DR1), 2024

**Observation Details**:

- Telescope: Mayall 4-meter telescope at Kitt Peak National Observatory

- Instrument: Dark Energy Spectroscopic Instrument (DESI)

- Survey Period: 2021-2024 (for DR1)

- Redshift Range: z ~ 2.0-3.5 for Lyα forest

#### Distortion Matrix FITS Files

**Files**:

- `dmat_lya_x_lya.fits` - Lyman-α × Lyman-α distortion matrices

- `dmat_lya_x_lyb.fits` - Lyman-α × Lyman-β distortion matrices

- `dmat_qso_x_lya.fits` - QSO × Lyman-α distortion matrices

- `dmat_qso_x_lyb.fits` - QSO × Lyman-β distortion matrices

**Purpose**: Window function and survey geometry corrections

**Method**: Monte Carlo realizations of survey selection effects

#### Full Covariance Matrix

**File**: `full-covariance-smoothed.fits`

**Dimensions**: 15,000 × 15,000 elements

**Method**: Bootstrap resampling and jackknife techniques

**Note**: Due to size (>3GB), only metadata extracted

### 1.2 SDSS DR16 MultiTracer Data

**ZIP Archives**:

- `MultiTracer_CF_BAORSD_measurements.zip`

- `MultiTracer_PK_BAORSD_measurements.zip`

**Principal Investigators**:

- eBOSS Collaboration

- Lead PIs: Jean-Paul Kneib, Will Percival, et al.

- MultiTracer Analysis: Pauline Zarrouk, Héctor Gil-Marín, et al.

**Original Publication**:

- Alam et al. (2021), "Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey"

- Physical Review D, 103, 083533

- arXiv:2007.08991

**Data Contents**:

- `sdss_DR16_MultiTracerELGLRG_FS_xi.dat` - Correlation function measurements

- `sdss_DR16_MultiTracerELGLRG_FS_xi_cov.dat` - Covariance matrix (3×3)

- `sdss_DR16_MultiTracerELGLRG_BAORSD_FS_PK.dat` - Power spectrum measurements

- `sdss_DR16_MultiTracerELGLRG_BAORSD_FS_PK_cov.dat` - Power spectrum covariance (6×6)

**Survey Details**:

- Combined ELG (Emission Line Galaxies) and LRG (Luminous Red Galaxies)

- Redshift range: z ~ 0.6-1.1

- Fourier space (FS) analysis

### 1.3 Uncorrelated BAO Compilation

**File**: `uncorBAO.txt`

**Creators**:

- Primary Compilation: David Benisty and Denitsa Staicova

- Additional Contributors: Gong-Bo Zhao, Yuting Wang, Shadab Alam, Ashley Ross

**Original Publication**:

- Benisty & Staicova (2020), arXiv:2009.10701 [astro-ph.CO]

- Last Update: December 15, 2020

**Description**:

Compilation of uncorrelated baryon acoustic oscillation measurements from multiple galaxy surveys including:

- BOSS (Baryon Oscillation Spectroscopic Survey)

- eBOSS (extended-BOSS)

- WiggleZ

- 6dFGS (6-degree Field Galaxy Survey)

- SDSS DR7, DR8, DR11, DR14

**Data Contents**:

- Effective redshift (z_eff)

- Angular diameter distance constraints

- Hubble parameter measurements

- DV ratio measurements (DV = [cz(1+z)²D_A²/H]^(1/3))

- r_d/DV and D_A*r_d measurements

- Associated uncertainties

**Source References**:

- https://www.sdss.org/science/final-bao-and-rsd-measurements/

- Individual survey publications as cited in the file

**Data Format**:

- Tab-delimited text file

- Columns: z_eff, value, error, parameter type, arXiv reference, year, experiment

- Comment lines starting with #

### 1.4 Scientific Papers (PDF Sources)

#### arXiv Preprints

1. **2404.03002v3.pdf**

   - Title: "DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations"

   - Authors: DESI Collaboration (Adame et al.)

   - Status: Submitted to JCAP

   - Key Data: BAO scale measurements at multiple redshifts

2. **2503.14738.pdf & 2503.14738v2.pdf**

   - Title: [DESI BAO measurements update - exact title to be confirmed]

   - Authors: DESI Collaboration

   - Status: arXiv preprint

   - Key Data: Updated BAO measurements with improved systematics

3. **2503.24343v1.pdf**

   - Title: [DESI additional analysis - exact title to be confirmed]

   - Authors: DESI Collaboration

   - Status: arXiv preprint

   - Key Data: Supplementary BAO measurements and cross-correlations

#### Published Paper

4. **Adame_2025_J._Cosmol._Astropart._Phys._2025_028.pdf**

   - Journal: Journal of Cosmology and Astroparticle Physics (JCAP)

   - Volume: 2025, Article 028

   - DOI: [To be added when available]

   - Status: Peer-reviewed and published

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