At redshifts 2 to 7, black holes in massive elliptical hosts show no sign of the cosmological growth needed to make black holes the dark energy, with k=0.13 +/- 0.27 instead of k=3.
Disforming scalar-tensor cosmology
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
Disformal transformations of Friedmann-Lema\^itre-Robertson-Walker and Bianchi geometries are analyzed in the context of scalar-tensor gravity. Novel aspects discussed explicitly are the $3+1$ splitting, the effective fluid equivalent of the gravitational scalar, Bianchi models, stealth solutions, and de Sitter solutions with non-constant scalar field (which are signatures of scalar-tensor gravity). Both pure disformal transformations and more general ones are discussed, including those containing higher derivatives of the scalar field recently introduced in the literature.
citation-role summary
background 1
citation-polarity summary
fields
astro-ph.CO 1years
2025 1verdicts
CONDITIONAL 1roles
background 1polarities
unclear 1representative citing papers
citing papers explorer
-
Black Holes in the Red-sequence Elliptical Galaxies at Redshifts $\sim 0.7-2.5$: Not Dark Energy Source but Remanants of Little Red Dots
At redshifts 2 to 7, black holes in massive elliptical hosts show no sign of the cosmological growth needed to make black holes the dark energy, with k=0.13 +/- 0.27 instead of k=3.