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Revisiting the parametrization of equation of state of dark energy via SNIa data
dc.contributor.authorLiu, Dao-Junen_US
dc.contributor.authorLi, Xin-Zhouen_US
dc.contributor.authorHao, Jiangangen_US
dc.contributor.authorJin, Xing-Huaen_US
dc.date.accessioned2010-06-01T22:10:25Z
dc.date.available2010-06-01T22:10:25Z
dc.date.issued2008-07-21en_US
dc.identifier.citationLiu, Dao-Jun; Li, Xin-Zhou; Hao, Jiangang; Jin, Xing-Hua (2008). "Revisiting the parametrization of equation of state of dark energy via SNIa data." Monthly Notices of the Royal Astronomical Society 388(1 ): 275-281. <http://hdl.handle.net/2027.42/75193>en_US
dc.identifier.issn0035-8711en_US
dc.identifier.issn1365-2966en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/75193
dc.description.abstractIn this paper, we revisit the parametrizations of the equation of state of dark energy and point out that comparing merely the Χ 2 of different fittings may not be optimal for choosing the ‘best’ parametrization. Another figure of merit for evaluating different parametrizations based on the area of the w ( z ) − z band is proposed. In light of the analysis of some two-parameter parametrizations and models based on available SNIa data, the area of w ( z ) − z band seems to be a good figure of merit, especially in the situation that the value of Χ 2 min for different parametrizations are very close. Therefore, we argue that both the area of the w ( z ) − z band and Χ 2 min should be synthetically considered for choosing a better parametrization of dark energy in the future experiments.en_US
dc.format.extent248524 bytes
dc.format.extent3109 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.publisherBlackwell Publishing Ltden_US
dc.rightsJournal compilation © 2008 RASen_US
dc.subject.otherCosmological Parametersen_US
dc.titleRevisiting the parametrization of equation of state of dark energy via SNIa dataen_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelAstronomyen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of physics, University of Michigan, 500 East University Avenue, Ann Arbor, MI 48109, USAen_US
dc.contributor.affiliationotherCentre for Astrophysics, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, Chinaen_US
dc.contributor.affiliationotherCambridge International Centre of Shanghai Normal University, 120 Guilin Road, Shanghai 200234, Chinaen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/75193/1/j.1365-2966.2008.13380.x.pdf
dc.identifier.doi10.1111/j.1365-2966.2008.13380.xen_US
dc.identifier.sourceMonthly Notices of the Royal Astronomical Societyen_US
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