57 citations · 409 across the 18 of their papers we have counts for
5 papers · 1 filter
Towards testing interacting cosmology by distant type Ia supernovae
Marek Szydlowski, Tomasz Stachowiak, Radoslaw Wojtak
We investigate the possibility of testing cosmological models with interaction between matter and energy sector. We assume the standard FRW model while the so called energy conserv…
Can brane dark energy model be probed observationally by distant supernovae?
Marek Szydlowski, Wlodzimierz Godlowski
The recent astronomical measurements of distant supernovae as well as other observations indicate that our universe is presently accelerating. There are different proposals for the…
Non-integrability of density perturbations in the FRW universe
Tomasz Stachowiak, Marek Szydlowski, Andrzej J. Maciejewski
We investigate the evolution equation of linear density perturbations in the Friedmann-Robertson-Walker universe with matter, radiation and the cosmological constant. The concept o…
Different faces of chaos in FRW models with scalar fields -- geometrical point of view
Orest Hrycyna, Marek Szydlowski
FRW cosmologies with conformally coupled scalar fields are investigated in a geometrical way by the means of geodesics of the Jacobi metric. In this model of dynamics, trajectories…
Dynamical dark energy models -- dynamical system approach
Marek Szydlowski, Orest Hrycyna
We study the Friedmann-Robertson-Walker model with dynamical dark energy modelled in terms of the equation of state in which the coefficient is pa…