首页|Black holes as the source of dark energy:A stringent test with high-redshift JWST AGNs
Black holes as the source of dark energy:A stringent test with high-redshift JWST AGNs
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Studies have proposed that there is evidence for cosmological coupling of black holes(BHs)with an index of k ≈ 3;hence,BHs serve as the astrophysical source of dark energy.However,the data sample is limited for the redshifts of ≤ 2.5.In recent years,the James Webb Space Telescope(JWST)has detected many high-redshift active galactic nuclei(AGNs)and quasars.Among the JWST NIRSpec-/NIRCam-resolved AGNs,three are determined to be in early-type host galaxies with a redshift of z～4.5-7.However,their M★ and MBH are in tension with the predicted cosmological coupling of black holes with k=3 at a confidence level of～2σ,which challenges the hypothesis that BHs serve as the origin of dark energy.Future work on high-redshift AGNs using the JWST will further assess such a hypothesis by identifying more early-type host galaxies in the higher mass range.
dark energysupermassive black holeactive galactic nucleiJames Webb Space Telescope
Key Laboratory of Dark Matter and Space Astronomy,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China
School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026,China
CAS Key Laboratory for Research in Galaxies and Cosmology,Department of Astronomy,University of Science and Technology of China,Hefei 230026,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChinese Academy of Sciences via the Key Research Program of Frontier Sciences
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