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Article: Constraints on dark energy models including gamma ray bursts

TitleConstraints on dark energy models including gamma ray bursts
Authors
Issue Date2008
Citation
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2008, v. 658, n. 4, p. 95-100 How to Cite?
AbstractIn this Letter we analyze the constraints on the property of dark energy from cosmological observations. Together with SNe Ia Gold sample, WMAP, SDSS and 2dFGRS data, we include 69 long Gamma-Ray Bursts (GRBs) data in our study and perform global fitting using Markov Chain Monte Carlo (MCMC) technique. Dark energy perturbations are explicitly considered. We pay particular attention to the time evolution of the equation of state of dark energy parameterized as wDE = w0 + wa (1 - a) with a the scale factor of the universe, emphasizing the complementarity of high redshift GRBs to other cosmological probes. It is found that the constraints on dark energy become stringent by taking into account high redshift GRBs, especially for wa, which delineates the evolution of dark energy. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/226682
ISSN
2015 Impact Factor: 4.787
2015 SCImago Journal Rankings: 3.186

 

DC FieldValueLanguage
dc.contributor.authorLi, Hong-
dc.contributor.authorSu, Meng-
dc.contributor.authorFan, Zuhui-
dc.contributor.authorDai, Zigao-
dc.contributor.authorZhang, Xinmin-
dc.date.accessioned2016-06-29T01:58:17Z-
dc.date.available2016-06-29T01:58:17Z-
dc.date.issued2008-
dc.identifier.citationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2008, v. 658, n. 4, p. 95-100-
dc.identifier.issn0370-2693-
dc.identifier.urihttp://hdl.handle.net/10722/226682-
dc.description.abstractIn this Letter we analyze the constraints on the property of dark energy from cosmological observations. Together with SNe Ia Gold sample, WMAP, SDSS and 2dFGRS data, we include 69 long Gamma-Ray Bursts (GRBs) data in our study and perform global fitting using Markov Chain Monte Carlo (MCMC) technique. Dark energy perturbations are explicitly considered. We pay particular attention to the time evolution of the equation of state of dark energy parameterized as wDE = w0 + wa (1 - a) with a the scale factor of the universe, emphasizing the complementarity of high redshift GRBs to other cosmological probes. It is found that the constraints on dark energy become stringent by taking into account high redshift GRBs, especially for wa, which delineates the evolution of dark energy. © 2007 Elsevier B.V. All rights reserved.-
dc.languageeng-
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics-
dc.titleConstraints on dark energy models including gamma ray bursts-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.physletb.2007.10.053-
dc.identifier.scopuseid_2-s2.0-36849045223-
dc.identifier.volume658-
dc.identifier.issue4-
dc.identifier.spage95-
dc.identifier.epage100-

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