Oct 2026· Progress in High Energy Physics PHEP· 0 citations· 4 references
Abstract
We investigate the gravitational energy-momentum distribution in the space-time of two black holes in circular orbit, in thecontext of the teleparallel equivalent of general relativity (TEGR). We address an approximate solution of Einstein’s field equationsthat describes two non-spinning black holes that circle each other in the xy plane, obtain the total energy of the space-time, andverify that the gravitational binding energy is negative. For a fixed orbital separation the average value of the flux of gravitationalradiation over a period vanishes, and we show that effective gravitational radiation is emitted as long as the separation betweenthe holes decreases in time. We then illustrate the formalism with a concrete application to the gravitational-wave eventGW151226: from the strain data of the L1 detector we reconstruct the time-dependent orbital parameters of the binary andevaluate numerically the total gravitational energy of the space-time, finding agreement with the analytical predictions.
In this paper, we investigate the periodic orbits around a black hole (BH) in Einstein-Maxwell-scalar (EMS) theory and the corresponding gravitational waveforms. First, we study the test particle dynamics around the BH by using the Lagrangian formalism. Using the corresponding conditions, we explore the effect of the s...
Mirzabek Alloqulov, Xojibonu Abdurashidova, S. Shaymatov et al.· 1 citation
We investigate, for the first time, the non-radial $f$-mode oscillations of neutron stars (NSs) with a dark energy (DE) core utilising a fully general relativistic treatment. We construct the stellar profile by considering a relativistic mean field model for nuclear matter and a modified Chaplygin fluid like prescripti...
O. P. Jyothilakshmi, L. Naik, V. Sreekanth· 0 citations
Numerical relativity has a profound impact on gravitational theory and gravitational wave astronomy. In this work, we present a systematic study of the head-on collisions of multipule black hole systems within the framework of numerical relativity using the Baumgarte-Shapiro-Shibata-Nakamura (BSSN) formulation. The num...
We investigate gravitational wave (GW) signatures from extreme-mass-ratio inspirals (EMRIs) around a Bardeen black hole, modeling the small object as a test particle, and provide a framework for probing strong-field spacetime geometry. We first present the equations of motion for test particles around a Bardeen black h...
We study the observational features of thin-disk accretion and emission spectra for static, spherically symmetric dyonic black holes in non-linear electrodynamics (NLED). In contrast to classical Maxwell theory, where electromagnetic duality assumes equal charges, the coupling parameters in NLED introduce a new gravita...
Sobhan Kazempour, Si-Chun Sun, Zhi-Qing He et al.· 1 citation
We compute the gravitational energy density of a linearized gravitational wave in the teleparallel equivalent of general relativity. For a plane wave in the transverse–traceless gauge we obtain the closed and exact expression [Formula: see text], and evaluate it on model polarizations [Formula: see text] and [Formula:...
S. Ulhoa, F. Carneiro, B. Carneiro et al.· Modern Physics Letters A· 0 citations
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