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The accelerating universe: nature and tests of dark energy and dark matter

Grant number: 17/05859-0
Support Opportunities:Regular Research Grants
Start date: July 01, 2017
End date: June 30, 2019
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
Principal Investigator:José Fernando de Jesus
Grantee:José Fernando de Jesus
Host Institution: Universidade Estadual Paulista (UNESP). Campus Experimental de Itapeva. Itapeva , SP, Brazil

Abstract

In current Cosmology, the flat LCDM model has obtained a considerable success in reconciling observations of different natures, like cosmic expansion acceleration (as suggested from Supernova Ia observations), the Cosmic Microwave Background Power Spectrum, Structure Formation, Matter Power Spectrum, Baryon Acoustic Oscillations, and Total Age of Universe. However, such model suffers from some observational problems, like ages of old objects at high redshifts, predicted quantity of satellite galaxies and, mainly, two big theoretical problems, namely, the Cosmological Constant Problem and the Cosmic Coincidence Problem. Such problems have stimulated cosmologists and astronomers to propose alternative scenarios to the cosmic concordance model (LCDM).In this project we will perform a comparative study (of statistical character) among LCDM and the various alternative cosmologies existing in literature. We intend to compare the alternative cosmologies (XCDM, Scalar fields, Spinorial fields, Matter creation models etc.) not only by the light of the so called background observational tests, but also with tests involving higher orders of density perturbations. (AU)

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Scientific publications (19)
(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)
VALENTIM, R.; JESUS, J. F.. Entropy and creation cold dark matter models. ASTRONOMISCHE NACHRICHTEN, v. 340, n. 1-3, SI, p. 105-107, . (16/09831-0, 17/05859-0)
PEREIRA, S. H.; LIMA, R. DE C.; ALVES, M. E. S.; GUIMARAES, T. M.; JESUS, J. F.; SOUZA, A. P. S.. Cosmology with mass dimension one fields: recent developments. European Physical Journal-Special Topics, v. 229, n. 11, SI, p. 2079-2116, . (13/26258-4, 17/05859-0)
ESCOBAL, A. A.; JESUS, J. F.; PEREIRA, S. H.. Cosmological constraints on scalar field dark matter. INTERNATIONAL JOURNAL OF MODERN PHYSICS D, v. 30, n. 15, . (17/05859-0)
JESUS, J. F.; HOLANDA, R. F. L.; DANTAS, M. A.. Testing the cosmic conservation of photon number with type Ia supernovae and ages of old objects. GENERAL RELATIVITY AND GRAVITATION, v. 49, n. 12, . (13/26258-4, 17/05859-0)
LAPOLA, M. M.; MORAES, P. H. R. S.; DE PAULA, W.; JESUS, J. F.; VALENTIM, R.; MALHEIRO, M.. Induced equation of state for the universe epochs constrained by the hubble parameter. CHINESE JOURNAL OF PHYSICS, v. 72, p. 159-175, . (16/09831-0, 15/08476-0, 18/20689-7, 17/05859-0)
JESUS, J. F.; GREGORIO, T. M.; ANDRADE-OLIVEIRA, F.; VALENTIM, R.; MATOS, C. A. O.. Bayesian correction of H(z) data uncertainties. Monthly Notices of the Royal Astronomical Society, v. 477, n. 3, p. 2867-2873, . (13/26258-4, 16/09831-0, 17/05859-0)
BARANOV, IURI P. R.; JESUS, JOSE F.; LIMA, JOSE A. S.. Testing creation cold dark matter cosmology with the radiation temperature-redshift relation. GENERAL RELATIVITY AND GRAVITATION, v. 51, n. 2, . (17/05859-0)
VALENTIM, R.; JESUS, J. F.. Thermodynamic constraints on matter creation models. EUROPEAN PHYSICAL JOURNAL C, v. 80, n. 11, . (17/05859-0, 16/09831-0, 13/26258-4)
JESUS, J. F.; VALENTIM, R.; MORAES, P. H. R. S.; MALHEIRO, M.. Kinematic constraints on spatial curvature from supernovae Ia and cosmic chronometers. Monthly Notices of the Royal Astronomical Society, v. 500, n. 2, p. 2227-2235, . (17/05859-0, 16/09831-0)
JESUS, J. F.; HOLANDA, R. F. L.; PEREIRA, S. H.. Model independent constraints on transition redshift. Journal of Cosmology and Astroparticle Physics, v. N/A, n. 5, p. 21-pg., . (17/05859-0)
VALENTIM, R.; JESUS, J. F.. Entropy and creation cold dark matter models. ASTRONOMISCHE NACHRICHTEN, v. 340, n. 1-3, p. 3-pg., . (16/09831-0, 17/05859-0)
JESUS, J. F.; VALENTIM, R.; ESCOBAL, A. A.; PEREIRA, S. H.. Gaussian process estimation of transition redshift. Journal of Cosmology and Astroparticle Physics, v. N/A, n. 4, p. 16-pg., . (16/09831-0, 17/05859-0)
JESUS, J. F.; HOLANDA, R. F. L.; PEREIRA, S. H.. Model independent constraints on transition redshift. Journal of Cosmology and Astroparticle Physics, n. 5, . (17/05859-0)
JESUS, J. F.; VALENTIM, R.; ANDRADE-OLIVERA, F.. Bayesian analysis of CCDM models. Journal of Cosmology and Astroparticle Physics, n. 9, . (13/26258-4, 16/09831-0, 17/05859-0)
JESUS, J. F.; VALENTIM, R.; ESCOBAL, A. A.; PEREIRA, S. H.. Gaussian process estimation of transition redshift. Journal of Cosmology and Astroparticle Physics, n. 4, . (16/09831-0, 17/05859-0)
JESUS, J. F.. EXACT SOLUTION FOR FLAT SCALE-INVARIANT COSMOLOGY. REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, v. 55, n. 1, p. 17-19, . (17/05859-0)
PEREIRA, S. H.; LIMA, R. DE C.; JESUS, J. F.; HOLANDA, R. F. L.. Acceleration in Friedmann cosmology with torsion. EUROPEAN PHYSICAL JOURNAL C, v. 79, n. 11, . (17/05859-0)
PEREIRA, S. H.; LIMA, R. DE C.; ALVES, M. E. S.; GUIMARAES, T. M.; JESUS, J. F.; SOUZA, A. P. S.. Cosmology with mass dimension one fields: recent developments. European Physical Journal-Special Topics, v. 229, n. 11, p. 38-pg., . (13/26258-4, 17/05859-0)
JESUS, J. F.; VALENTIM, R.; ANDRADE-OLIVERA, F.. Bayesian analysis of CCDM models. Journal of Cosmology and Astroparticle Physics, v. N/A, n. 9, p. 16-pg., . (16/09831-0, 17/05859-0, 13/26258-4)