52 citations · 213 across the 31 of their papers we have counts for
3 papers · 1 filter
Is dark matter present in NGC4736? An iterative spectral method for finding mass distribution in spiral galaxies
Joanna Jalocha, Lukasz Bratek, Marek Kutschera
An iterative method for reconstructing mass distribution in spiral galaxies using a thin disk approximation is developed. As an example, the method is applied to galaxy NGC 4736; i…
A class of space-times of non-rigidly rotating dust
Lukasz Bratek, Joanna Jalocha, Marek Kutschera
We find a class of exact solutions of differentially rotating dust in the framework of General Relativity. There exist asymptotically flat space-times of the flow with positive mas…
van Stockum--Bonnor Spacetimes of Rigidly Rotating Dust
Lukasz Bratek, Joanna Jalocha, Marek Kutschera
Stationary, axisymmetric and asymptotically flat spacetimes of dust of which trajectories are integral curves of the time translation Killing vector are investigated. The flow has…