A null test of the metric nature of the cosmic acceleration

Buzzi, A; Marinoni, C; Colafrancesco, S

doi:10.1088/1475-7516/2008/11/001

Title: A null test of the metric nature of the cosmic acceleration

Full Record
Other Related Research

Abstract

We discuss the testable predictions of a phenomenological model in which the accelerated expansion of the universe is the result of the action of a non-gravitational force field, rather than the effect of a negative-pressure dark energy fluid or a modification of general relativity. We show, through the equivalence principle, that in such a scenario the cosmic acceleration felt by distant standard candles like SNIa (type Ia supernovae (SNe)) depends on the mass of the host system, being larger in isolated galaxies than in rich clusters. As a consequence, the scatter in the observed SNIa Hubble diagram has mostly a physical origin in this scenario: in fact, the SNIa distance modulus is increasing, at fixed redshift, for SNe that are hosted in isolated galaxies with respect to the case of SNe hosted in rich galaxy clusters. Due to its strong dependence on the astrophysical environments of standard candles, we conclude that alternative non-gravitational mechanisms for the observed accelerated expansion of the universe can be interestingly contrasted against the standard metric interpretation of the cosmological acceleration by means of an environmental analysis of the cosmic structures in which SNIa are found. The possible absence of such environmental effects would definitely excludemore »« less

Authors:

Buzzi, A; Marinoni, C ^[1]; Colafrancesco, S ^[2]

Centre de Physique Theorique, UMR 6207 CNRS-Luminy and Universite de Provence, Case 907, F-13288 Marseille Cedex 9 (France)
ASI-ASDC, c/o ESRIN, Via G Galilei, I-00040 Frascati (Italy)

Publication Date:: Sat Nov 15 00:00:00 EST 2008

OSTI Identifier:: 22156806

Resource Type:: Journal Article

Journal Name:: Journal of Cosmology and Astroparticle Physics

Additional Journal Information:: Journal Volume: 2008; Journal Issue: 11; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCELERATION; ASTROPHYSICS; ENVIRONMENTAL EFFECTS; EQUIVALENCE PRINCIPLE; GALAXIES; GALAXY CLUSTERS; GENERAL RELATIVITY THEORY; MASS; METRICS; NONLUMINOUS MATTER; ORIGIN; RED SHIFT; SUPERNOVAE; UNIVERSE

Citation Formats


                    Buzzi, A, Marinoni, C, and Colafrancesco, S. A null test of the metric nature of the cosmic acceleration.  United States: N. p., 2008. 
        Web.  doi:10.1088/1475-7516/2008/11/001.

Copy to clipboard


                    Buzzi, A, Marinoni, C, & Colafrancesco, S. A null test of the metric nature of the cosmic acceleration.  United States.  https://doi.org/10.1088/1475-7516/2008/11/001

Copy to clipboard


                    Buzzi, A, Marinoni, C, and Colafrancesco, S. 2008.  
        "A null test of the metric nature of the cosmic acceleration".  United States.  https://doi.org/10.1088/1475-7516/2008/11/001.

Copy to clipboard


                    
@article{osti_22156806,

  title        = {A null test of the metric nature of the cosmic acceleration},

  author       = {Buzzi, A and Marinoni, C and Colafrancesco, S},

  abstractNote = {We discuss the testable predictions of a phenomenological model in which the accelerated expansion of the universe is the result of the action of a non-gravitational force field, rather than the effect of a negative-pressure dark energy fluid or a modification of general relativity. We show, through the equivalence principle, that in such a scenario the cosmic acceleration felt by distant standard candles like SNIa (type Ia supernovae (SNe)) depends on the mass of the host system, being larger in isolated galaxies than in rich clusters. As a consequence, the scatter in the observed SNIa Hubble diagram has mostly a physical origin in this scenario: in fact, the SNIa distance modulus is increasing, at fixed redshift, for SNe that are hosted in isolated galaxies with respect to the case of SNe hosted in rich galaxy clusters. Due to its strong dependence on the astrophysical environments of standard candles, we conclude that alternative non-gravitational mechanisms for the observed accelerated expansion of the universe can be interestingly contrasted against the standard metric interpretation of the cosmological acceleration by means of an environmental analysis of the cosmic structures in which SNIa are found. The possible absence of such environmental effects would definitely exclude the possibility of non-gravitational mechanisms being responsible for the accelerated cosmological expansion and will therefore reinforce a metric interpretation.},

  doi          = {10.1088/1475-7516/2008/11/001},

  url          = {https://www.osti.gov/biblio/22156806},
  journal      = {Journal of Cosmology and Astroparticle Physics},

  issn         = {1475-7516},

  number       = 11,

  volume       = 2008,

  place        = {United States},

  year         = {Sat Nov 15 00:00:00 EST 2008},

  month        = {Sat Nov 15 00:00:00 EST 2008}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1088/1475-7516/2008/11/001

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Unveiling the Universe with emerging cosmological probes

Journal Article Moresco, Michele; Amati, Lorenzo; Amendola, Luca; ... - Living Reviews in Relativity

The detection of the accelerated expansion of the Universe has been one of the major breakthroughs in modern cosmology. Several cosmological probes (Cosmic Microwave Background, Supernovae Type Ia, Baryon Acoustic Oscillations) have been studied in depth to better understand the nature of the mechanism driving this acceleration, and they are being currently pushed to their limits, obtaining remarkable constraints that allowed us to shape the standard cosmological model. In parallel to that, however, the percent precision achieved has recently revealed apparent tensions between measurements obtained from different methods. These are either indicating some unaccounted systematic effects, or are pointing towardmore »« less
https://doi.org/10.1007/s41114-022-00040-z

Full Text Available
Magnified Weak Lensing Cross Correlation Tomography

Technical Report

This project carried out a weak lensing tomography (WLT) measurement around rich clusters of galaxies. This project used ground based photometric redshift data combined with HST archived cluster images that provide the WLT and cluster mass modeling. The technique has already produced interesting results (Guennou et al, 2010,Astronomy & Astrophysics Vol 523, page 21, and Clowe et al, 2011 to be submitted). Guennou et al have validated that the necessary accuracy can be achieved with photometric redshifts for our purposes. Clowe et al titled "The DAFT/FADA survey. II. Tomographic weak lensing signal from 10 high redshift clusters," have shown thatmore »« less
https://doi.org/10.2172/993506

Full Text Available
Evidence for Cosmic Acceleration Is Robust to Observed Correlations between Type Ia Supernova Luminosity and Stellar Age

Journal Article Rose, B.; Rubin, D.; Cikota, A.; ... - The Astrophysical Journal. Letters (Online)

Type Ia supernovae (SNe Ia) are powerful standardizable candles for constraining cosmological models and provided the first evidence of the accelerated expansion of the universe. Their precision derives from empirical correlations, now measured from >1000 SNe Ia, between their luminosities, light-curve shapes, colors, and most recently with the stellar mass of their host galaxy. As mass correlates with other galaxy properties, alternative parameters have been investigated to improve SN Ia standardization though none have been shown to significantly alter the determination of cosmological parameters. We re-examine a recent claim, based on 34 SN Ia in nearby passive host galaxies, ofmore »« less
Cited by 23
https://doi.org/10.3847/2041-8213/ab94ad

Full Text Available
Constraints on cosmological models and reconstructing the acceleration history of the Universe with gamma-ray burst distance indicators

Journal Article Nan, Liang; Puxun, Wu; Shuangnan, Zhang - Physical Review. D, Particles Fields

Gamma-ray bursts (GRBs) have been regarded as standard candles at very high redshift for cosmology research. We have proposed a new method to calibrate GRB distance indicators with Type Ia supernova (SNe Ia) data in a completely cosmology-independent way to avoid the circularity problem that had limited the direct use of GRBs to probe cosmology [N. Liang, W. K. Xiao, Y. Liu, and S. N. Zhang, Astrophys. J. 685, 354 (2008).]. In this paper, a simple method is provided to combine GRB data into the joint observational data analysis to constrain cosmological models; in this method those SNe Ia datamore »« less
https://doi.org/10.1103/PHYSREVD.81.083518
The effects of varying colour–luminosity relations on Type Ia supernova science

Journal Article González-Gaitán, S.; de Jaeger, T.; Galbany, L.; ... - Monthly Notices of the Royal Astronomical Society

ABSTRACT The success of Type Ia supernova (SN Ia) distance standardization for cosmology relies on a single global linear relationship between their peak luminosity and colour, the β parameter. However, there are several pieces of evidence and physical reasons to believe that this relation is not universal and may change within different subgroups, or even among individual objects. In this work, we allow β to vary among subpopulations with different observed properties in the cosmological fits. Although the inferred cosmological parameters are consistent with previous studies that assume a single colour–luminosity relation, we find that the SN data favour non-universal distributionsmore »« less
https://doi.org/10.1093/mnras/stab2802

Similar Records