96 citations · 418 across the 26 of their papers we have counts for
26 papers
Wave-fronts of gravitational waves partially trapped in ultra-compact stars
Marek Abramowicz, Jiří Horák, Kateřina Klimovičová
We dedicate this work to Dr Omer Blaes, professor of physics at UCSB, on the occasion of his sixtieth birthday. We have been collaborating now and then with Dr. Blaes on problems i…
Reflection-asymmetric wormholes and their double shadows
Maciek Wielgus, Jiri Horak, Frederic Vincent +1
We discuss construction and observational properties of wormholes obtained by connecting two Reissner-Nordstrom spacetimes with distinct mass and charge parameters. These objects a…
Curvature dependence of relativistic epicyclic frequencies in static, axially symmetric spacetimes
Ronaldo S. S. Vieira, Włodek Kluźniak, Marek Abramowicz
The sum of squared epicyclic frequencies of nearly circular motion () in axially symmetric configurations of Newtonian gravity is known to depend both on the matter de…
Velocity, acceleration and gravity in Einstein's relativity
Marek A. Abramowicz
Einstein's relativity theory demands that all meaningful physical objects should be defined covariantly, i.e. in a coordinate independent way. Concepts of relative velocity, accele…
No repulsive force in General Relativity
M. A. Abramowicz, J. -P. Lasota
We show that a recent assertion [arXiv:1608.01541] that gravitational wave emission can lead to a repulsive force explaining the accelerated expansion of the Universe is totally un…
The electromagnetic afterglows of gravitational waves as a test for Quantum Gravity
M. A. Abramowicz, T. Bulik, G. F. R. Ellis +2
We argue that if particularly powerful electromagnetic afterglows of the gravitational waves bursts will be observed in the future, this could be used as a strong observational sup…