publication . Article . Preprint . 2019

Dark Energy Survey Year 1 Results: Measurement of the Galaxy Angular Power Spectrum

Camacho, H; Kokron, N; Andrade-Oliveira, F; Rosenfeld, R; Lima, M; Lacasa, F; Sobreira, F; da Costa, L N; Avila, S; Chan, K C; ...
Open Access English
  • Published: 01 Aug 2019
  • Publisher: HAL CCSD
Abstract
We use data from the first-year (Y1) observations of the DES collaboration to measure the galaxy angular power spectrum (APS), and search for its BAO feature using a template-fitting method. We test our methodology in a sample of 1800 DES Y1-like mock catalogs. The APS is measured with the pseudo-$C_\ell$ method, using pixelized maps constructed from the mock catalogs and the DES mask. The covariance matrix of the $C_\ell$'s in these tests are also obtained from the mock catalogs. We use templates to model the measured spectra and estimate template parameters firstly from the $C_\ell$'s of the mocks using two different methods, a maximum likelihood estimator and...
Subjects
free text keywords: cosmology: observations, large-scale structure of Universe, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], astro-ph.CO, RCUK, STFC, observations [cosmology], large-scale structure of Universe, Space and Planetary Science, Astronomy and Astrophysics, QB, Astrophysics - Cosmology and Nongalactic Astrophysics, Statistical physics, Dark energy, Spectral density, Spectral line, Physics, Galaxy, Robustness (computer science), Markov chain Monte Carlo, symbols.namesake, symbols, Covariance matrix, Goodness of fit
Funded by
EC| TESTDE
Project
TESTDE
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
,
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
,
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
121 references, page 1 of 9

Abbott T. M. C., et al., 2017b, preprint, (arXiv:1708.01530)

Abbott T. M. C., et al., 2017a, Submitted to: Mon. Not. Roy.

Alam S., et al., 2017, Mon. Not. Roy. Astron. Soc., 470, 2617

Anderson L., et al., 2014a, Mon. Not. Roy. Astron. Soc., 439, 83

Anderson L., et al., 2014b, MNRAS, 441, 24

Ata M., et al., 2018, Mon. Not. Roy. Astron. Soc., 473, 4773

Garcia-Bellido J., 2015, Mon. Not. Roy. Astron. Soc., 450,

Avila S., et al., 2017, Submitted to: Mon. Not. Roy. Astron. Soc.

Blake C., Collister A., Bridle S., Lahav O., 2007, Mon. Not. Roy.

Astron. Soc., 374, 1527

Blake C., et al., 2011, Mon. Not. Roy. Astron. Soc., 418, 1707

Brown M. L., Castro P. G., Taylor A. N., 2005, Mon. Not. Roy.

Astron. Soc., 360, 1262

2012, Mon. Not. Roy. Astron. Soc., 419, 1689

Cawthon R., et al., 2017, Submitted to: Mon. Not. Roy. Astron.

121 references, page 1 of 9
Abstract
We use data from the first-year (Y1) observations of the DES collaboration to measure the galaxy angular power spectrum (APS), and search for its BAO feature using a template-fitting method. We test our methodology in a sample of 1800 DES Y1-like mock catalogs. The APS is measured with the pseudo-$C_\ell$ method, using pixelized maps constructed from the mock catalogs and the DES mask. The covariance matrix of the $C_\ell$'s in these tests are also obtained from the mock catalogs. We use templates to model the measured spectra and estimate template parameters firstly from the $C_\ell$'s of the mocks using two different methods, a maximum likelihood estimator and...
Subjects
free text keywords: cosmology: observations, large-scale structure of Universe, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], astro-ph.CO, RCUK, STFC, observations [cosmology], large-scale structure of Universe, Space and Planetary Science, Astronomy and Astrophysics, QB, Astrophysics - Cosmology and Nongalactic Astrophysics, Statistical physics, Dark energy, Spectral density, Spectral line, Physics, Galaxy, Robustness (computer science), Markov chain Monte Carlo, symbols.namesake, symbols, Covariance matrix, Goodness of fit
Funded by
EC| TESTDE
Project
TESTDE
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
,
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
,
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
121 references, page 1 of 9

Abbott T. M. C., et al., 2017b, preprint, (arXiv:1708.01530)

Abbott T. M. C., et al., 2017a, Submitted to: Mon. Not. Roy.

Alam S., et al., 2017, Mon. Not. Roy. Astron. Soc., 470, 2617

Anderson L., et al., 2014a, Mon. Not. Roy. Astron. Soc., 439, 83

Anderson L., et al., 2014b, MNRAS, 441, 24

Ata M., et al., 2018, Mon. Not. Roy. Astron. Soc., 473, 4773

Garcia-Bellido J., 2015, Mon. Not. Roy. Astron. Soc., 450,

Avila S., et al., 2017, Submitted to: Mon. Not. Roy. Astron. Soc.

Blake C., Collister A., Bridle S., Lahav O., 2007, Mon. Not. Roy.

Astron. Soc., 374, 1527

Blake C., et al., 2011, Mon. Not. Roy. Astron. Soc., 418, 1707

Brown M. L., Castro P. G., Taylor A. N., 2005, Mon. Not. Roy.

Astron. Soc., 360, 1262

2012, Mon. Not. Roy. Astron. Soc., 419, 1689

Cawthon R., et al., 2017, Submitted to: Mon. Not. Roy. Astron.

121 references, page 1 of 9
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