3 papers
gr-qc2026
The Role of Gravitational Energy Flux in Cosmic Acceleration
S. C. Ulhoa, F. L. Carneiro, J. W. Maluf
The article deals with the role of gravitational radiation energy in the large-scale dynamics of the universe. Motivated by the observed accelerated expansion, we investigate wheth…
gr-qc2026
Blueshift of light rays induced by gravitational wave memory effect
F. L. Carneiro, S. C. Ulhoa, J. W. Maluf
The article deals with photon propagation in pp-wave spacetimes in the strong gravitational-wave regime and its consequences for redshift measurements. We show that null geodesics…
gr-qc2024
Energy of Gravitational Radiation and the Background Energy of the Space-Time
J. W. Maluf, F. Lessa Carneiro, S. C. Ulhoa +1
We address the issue of gravitational radiation in the context of the Bondi-Sachs space-time, and consider the expression for the gravitational energy of the radiation obtained in…