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Black hole shadows constrain extended gravityстатья Исследовательская статья
- Авторы: Prokopov V.A., Alexeyev S.O., Zenin O.I.
- Журнал: Journal of Experimental and Theoretical Physics
- Том: 135
- Номер: 1
- Год издания: 2022
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 91
- Последняя страница: 99
- DOI: 10.1134/S1063776122070093
- Аннотация: —The first images of black hole shadows open new possibilities to constrain modern extended gravitytheories. We present the method of shadow background calculation for black hole solutions in the form of Taylor series where g11 = – . The method is extended to general nonrotating case g11 ≠ – . The results of the analysis are compared with the predictions of General relativity taking into account the Event Horizon Telescope data. The results for the Horndesky model with the Gauss–Bonnet invariant, loop quantum gravity, Bumblebee model and Gauss–Bonnet gravity are in full agreement with the observations of M87*. In conformal gravity, large values of m2 and Qs must be excluded. In STEGR f(Q) gravity the observational limits on the parameter α are: –0.025 < α < 0.04. For an alternative generalization of the Bumblebee model with the Schwarzschild approximation: –0.3 < l < 0.45. These results demonstrate the maximum one can achieve without taking into account of the rotation of a black hole.
- Добавил в систему: Алексеев Станислав Олегович