Journal
PHYSICS LETTERS B
Volume 699, Issue 4, Pages 246-250Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2011.04.022
Keywords
Kinematical approach; Deceleration parameter; Jerk parameter
Funding
- National Natural Science Foundation [10875056]
- NSF [10703001]
- NSF of PR China [11005088]
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Kinematical models are constrained by the latest observational data from geometry-distance measurements, which include 557 type la supernovae (SNIa) Union2 data and 15 observational Hubble data. Considering two parameterized deceleration parameter, the values of current deceleration parameter go, jerk parameter J(0) and transition redshift z(T), are obtained. Furthermore, we show the departures for two parameterized kinematical models from ACDM model according to the evolutions of jerk parameter j(z). Also, it is shown that the constraint on jerk parameter j(z) is weak by the current geometrical observed data. (C) 2011 Elsevier B.V. All rights reserved.
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