Black hole shadow to probe modified gravity
نویسندگان
چکیده
We study the black hole's shadow for Schwarzschild - de Sitter and Kerr metrics with contribution of cosmological constant \Lambda. Based on reported parameters M87* hole we obtain constraints $\Lambda$ show agreement data. It is shown that, coupling \Lambda-term spin parameter reveals peculiarities photon spheres hence shadows. Within parametrized post-Newtonian formalism constraint corresponding \Lambda-determined obtained.
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ژورنال
عنوان ژورنال: European Physical Journal Plus
سال: 2021
ISSN: ['2190-5444']
DOI: https://doi.org/10.1140/epjp/s13360-021-01119-2