Black Holes in the Red-sequence Elliptical Galaxies at Redshifts about 0.7-2.5: Not Dark Energy Source but Remnants of Little Red Dots

Researchers tested if black holes in elliptical galaxies could explain dark energy via cosmological coupling, a theory suggesting their mass changes with cosmic expansion. Using JWST data on high-redshift quasars, they found the coupling strength 'k' was near zero, strongly rejecting the dark energy hypothesis. Instead, they conclude these black holes are remnants of

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