Precision cosmology with the Dark Energy Survey

• Grant number: 14/21098-1
• Support type: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): June 01, 2015
• Effective date (End): October 07, 2018
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal researcher: Marcos Vinicius Borges Teixeira Lima
• Grantee: Vinicius Consolini Busti
• Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated scholarship(s): 16/17271-5 - Galaxy clusters as cosmological probes: calibration of the mass-richness relation, BE.EP.PD

Abstract

Whole-sky surveys are revolutionizing the way research is conducted in cosmology. In order to extract the maximum scientific output, standard methods used in the analyses need to be refined so systematic errors are not included. The Dark Energy Survey will map the sky in the optical bandwidth and will detect 200 million galaxies and 100 thousand galaxy clusters, aiming at providing a better comprehension of dark matter and dark energy. In this project we intend to use three groups of observables, namely, galaxy clusters, large scale structure and cosmic voids, to improve our knowledge of these mysterious components. A thorough characterization of the tests will be performed searching for systematic errors through realistic simulations performed by the survey. Followed by that we will apply the tests to data thereby providing constraints to the cosmic concordance LCDM model as well as alternative dark energy models and modified gravity theories. (AU)

Scientific publications

(13)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VELTEN, HERMANO; GOMES, SYRIOS; BUSTI, VINICIUS C. Gauging the cosmic acceleration with recent type Ia supernovae data sets. Physical Review D, v. 97, n. 8 APR 23 2018. Web of Science Citations: 4.

HOLANDA, R. F. L.; SILVA, KAMILLA V. R. A.; BUSTI, V. C. X-ray surface brightness observations of galaxy clusters, cosmic opacity and the limits on the matter density parameter. Journal of Cosmology and Astroparticle Physics, n. 3 MAR 2018. Web of Science Citations: 1.

HOLANDA, R. F. L.; BUSTI, V. C.; GONZALEZ, J. E.; ANDRADE-SANTOS, F.; ALCANIZ, J. S. Cosmological constraints on the gas depletion factor in galaxy clusters. Journal of Cosmology and Astroparticle Physics, n. 11 DEC 2017. Web of Science Citations: 1.

HOLANDA, R. F. L.; PEREIRA, S. H.; BUSTI, V. C.; BESSA, C. H. G. Improved constraints on violations of the Einstein equivalence principle in the electromagnetic sector with complementary cosmic probes. Classical and Quantum Gravity, v. 34, n. 19 OCT 5 2017. Web of Science Citations: 2.

HOLANDA, R. F. L.; BUSTI, V. C.; LIMA, F. S.; ALCANIZ, J. S. Probing the distance-duality relation with high-z data. Journal of Cosmology and Astroparticle Physics, n. 9 SEP 2017. Web of Science Citations: 5.

SASDELLI, M.; ISHIDA, E. E. O.; VILALTA, R.; AGUENA, M.; BUSTI, V. C.; CAMACHO, H.; TRINDADE, A. M. M.; GIESEKE, F.; DE SOUZA, R. S.; FANTAYE, Y. T.; MAZZALI, P. A.; COLLABORATION, COIN. Exploring the spectroscopic diversity of Type Ia supernovae with DRACULA: a machine learning approach. Monthly Notices of the Royal Astronomical Society, v. 461, n. 2, p. 2044-2059, SEP 11 2016. Web of Science Citations: 6.

HOLANDA, R. F. L.; BUSTI, V. C.; COLACO, L. R.; ALCANIZ, J. S.; LANDAU, S. J. Galaxy clusters, type la supernovae and the fine structure constant. Journal of Cosmology and Astroparticle Physics, n. 8 AUG 2016. Web of Science Citations: 6.

BUSTI, VINICIUS C.; CLARKSON, CHRIS. Dodging the dark matter degeneracy while determining the dynamics of dark energy. Journal of Cosmology and Astroparticle Physics, n. 5 MAY 2016. Web of Science Citations: 4.

HOLANDA, R. F. L.; LANDAU, S. J.; ALCANIZ, J. S.; SANCHEZ G., I. E.; BUSTI, V. C. Constraints on a possible variation of the fine structure constant from galaxy cluster data. Journal of Cosmology and Astroparticle Physics, n. 5 MAY 2016. Web of Science Citations: 0.

HOLANDA, R. F. L.; BUSTI, V. C.; ALCANIZ, J. S. Probing the cosmic distance duality with strong gravitational lensing and supernovae la data. Journal of Cosmology and Astroparticle Physics, n. 2 FEB 2016. Web of Science Citations: 20.

BUSTI, VINICIUS C.; DE LA CRUZ-DOMBRIZ, ALVARO; DUNSBY, PETER K. S.; SAEZ-GOMEZ, DIEGO. Is cosmography a useful tool for testing cosmology?. Physical Review D, v. 92, n. 12 DEC 11 2015. Web of Science Citations: 20.

ISHIDA, E. E. O.; VITENTI, S. D. P.; PENNA-LIMA, M.; CISEWSKI, J.; DE SOUZA, R. S.; TRINDADE, A. M. M.; CAMERON, E.; BUSTI, V. C.; COLLABORATION, COIN. COSMOABC: Likelihood-free inference via Population Monte Carlo Approximate Bayesian Computation. ASTRONOMY AND COMPUTING, v. 13, p. 1-11, NOV 2015. Web of Science Citations: 27.

SANTOS-DA-COSTA, SIMONY; BUSTI, VINICIUS C.; HOLANDA, RODRIGO F. L. Two new tests to the distance duality relation with galaxy clusters. Journal of Cosmology and Astroparticle Physics, n. 10 OCT 2015. Web of Science Citations: 23.