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Compact objects in general relativity: From Buchdahl stars to quasiblack holes
José P. S. Lemos, Oleg B. Zaslavskii
A Buchdahl star is a highly compact star for which the boundary radius obeys , where is the gravitational radius of the star itself. A quasiblack hole is a…
Maximal extension of the Schwarzschild metric: From Painlevé-Gullstrand to Kruskal-Szekeres
José P. S. Lemos, Diogo L. F. G. Silva
We find a specific coordinate system that goes from the Painlevé-Gullstrand partial extension to the Kruskal-Szekeres maximal extension and thus exhibit the maximal extension of th…
Gravitational field of a pit and maximal mass defects
José P. S. Lemos, Oleg B. Zaslavskii
A general relativistic solution, composed of a Zel'dovich-Letelier interior made of radial strings matched through a spherical thin shell at radius to an exterior Schwarzschi…
Stability of Kerr black holes in generalized hybrid metric-Palatini gravity
João Luís Rosa, José P. S. Lemos, Francisco S. N. Lobo
It is shown that the Kerr solution exists in the generalized hybrid metric-Palatini gravity theory and that for certain choices of the function that characterizes…
Prospects for Fundamental Physics with LISA
Enrico Barausse, Emanuele Berti, Thomas Hertog +318
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental…