Moffat’s modified gravity tested on X-COP galaxy clusters

Autor: Sreekanth Harikumar, Marek Biesiada
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: European Physical Journal C: Particles and Fields, Vol 82, Iss 3, Pp 1-6 (2022)
Druh dokumentu: article
ISSN: 1434-6044
1434-6052
DOI: 10.1140/epjc/s10052-022-10204-4
Popis: Abstract Scalar tensor vector gravity (STVG) is a fully covariant Lorentz invariant alternative theory of gravity also known as MOdified Gravity (MOG) which modifies General Relativity by inclusion of dynamical massive vector field and scalar fields. In STVG the mass $$\mu $$ μ of the vector field $$\phi _{\mu }$$ ϕ μ and the gravitational constant G acquire the status of dynamical fields. We use the reconstructed total cluster mass of the X-COP sample obtained from X-ray observations by XMM-Newton telescope in combination with Sunyaev–Zel’dovich (SZ) effect observed within Planck all-sky survey to estimate the $$ \alpha $$ α and $$\mu $$ μ parameters of MOG theory. The obtained values are consistent with previous fits by other authors. Hence the MOG is passing another test and proves its consistency strengthening thereby its stance of being a promising alternative to General Relativity.
Databáze: Directory of Open Access Journals
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