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Cosmokinetics

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arxiv astro-ph/0408279 v1 pith:4ASQKZZF submitted 2004-08-16 astro-ph

R. D. Blandford , M. Amin , E. A. Baltz , K. Mandel & P. J. Marshall This is my paper · ORCID
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keywords approachjerkparameteraccelerationastronomicalconsidercontemporarycosmokinetics
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abstract

Our fundamental lack of understanding of the acceleration of the Universe suggests that we consider a kinematic description. The simplest formalism involves the third derivative of the scale factor through a jerk parameter. A new approach is presented for describing the results of astronomical observations in terms of the contemporary jerk parameter and this is related to the equation of state approach. Simple perturbative expansions about $\Lambda$CDM are given.

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Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Revisiting cosmic acceleration with DESI BAO

    astro-ph.CO 2025-07 conditional novelty 5.0 of 10

    Constraints from DESI BAO, Planck CMB, and three SN catalogs yield a negative jerk parameter at z=0 in the CPL model, suggesting cosmic acceleration is slowing.

  2. An Alternative Approach to the Exact Solution of FRW-Type Spacetime with a Generalized Chaplygin Gas

    gr-qc 2025-02 reject novelty 3.0 of 10

    The claimed exact solution for a generalized Chaplygin gas universe is invalid because it only satisfies the starting equation when the matter constant equals the dark-energy constant, a condition the paper's own fits...

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