Observational Evidence for Cosmological Coupling of Black Holes and its Implications for an Astrophysical Source of Dark Energy
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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Observational Evidence for Cosmological Coupling of Black Holes and its Implications for an Astrophysical Source of Dark Energy. / Farrah, Duncan; Croker, Kevin S.; Zevin, Michael; Tarle, Gregory; Faraoni, Valerio; Petty, Sara; Afonso, Jose; Fernandez, Nicolas; Nishimura, Kurtis A.; Pearson, Chris; Wang, Lingyu; Clements, David L.; Efstathiou, Andreas; Hatziminaoglou, Evanthia; Lacy, Mark; McPartland, Conor; Pitchford, Lura K.; Sakai, Nobuyuki; Weiner, Joel.
I: Astrophysical Journal Letters, Bind 944, Nr. 2, 31, 01.02.2023.Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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T1 - Observational Evidence for Cosmological Coupling of Black Holes and its Implications for an Astrophysical Source of Dark Energy
AU - Farrah, Duncan
AU - Croker, Kevin S.
AU - Zevin, Michael
AU - Tarle, Gregory
AU - Faraoni, Valerio
AU - Petty, Sara
AU - Afonso, Jose
AU - Fernandez, Nicolas
AU - Nishimura, Kurtis A.
AU - Pearson, Chris
AU - Wang, Lingyu
AU - Clements, David L.
AU - Efstathiou, Andreas
AU - Hatziminaoglou, Evanthia
AU - Lacy, Mark
AU - McPartland, Conor
AU - Pitchford, Lura K.
AU - Sakai, Nobuyuki
AU - Weiner, Joel
PY - 2023/2/1
Y1 - 2023/2/1
N2 - Observations have found black holes spanning 10 orders of magnitude in mass across most of cosmic history. The Kerr black hole solution is, however, provisional as its behavior at infinity is incompatible with an expanding universe. Black hole models with realistic behavior at infinity predict that the gravitating mass of a black hole can increase with the expansion of the universe independently of accretion or mergers, in a manner that depends on the black hole's interior solution. We test this prediction by considering the growth of supermassive black holes in elliptical galaxies over 0 < z less than or similar to 2.5. We find evidence for cosmologically coupled mass growth among these black holes, with zero cosmological coupling excluded at 99.98% confidence. The redshift dependence of the mass growth implies that, at z less than or similar to 7, black holes contribute an effectively constant cosmological energy density to Friedmann's equations. The continuity equation then requires that black holes contribute cosmologically as vacuum energy. We further show that black hole production from the cosmic star formation history gives the value of omega(?) measured by Planck while being consistent with constraints from massive compact halo objects. We thus propose that stellar remnant black holes are the astrophysical origin of dark energy, explaining the onset of accelerating expansion at z similar to 0.7.
AB - Observations have found black holes spanning 10 orders of magnitude in mass across most of cosmic history. The Kerr black hole solution is, however, provisional as its behavior at infinity is incompatible with an expanding universe. Black hole models with realistic behavior at infinity predict that the gravitating mass of a black hole can increase with the expansion of the universe independently of accretion or mergers, in a manner that depends on the black hole's interior solution. We test this prediction by considering the growth of supermassive black holes in elliptical galaxies over 0 < z less than or similar to 2.5. We find evidence for cosmologically coupled mass growth among these black holes, with zero cosmological coupling excluded at 99.98% confidence. The redshift dependence of the mass growth implies that, at z less than or similar to 7, black holes contribute an effectively constant cosmological energy density to Friedmann's equations. The continuity equation then requires that black holes contribute cosmologically as vacuum energy. We further show that black hole production from the cosmic star formation history gives the value of omega(?) measured by Planck while being consistent with constraints from massive compact halo objects. We thus propose that stellar remnant black holes are the astrophysical origin of dark energy, explaining the onset of accelerating expansion at z similar to 0.7.
KW - GAMMA-RAY BURSTS
KW - MASS FUNCTION
KW - MAXIMUM MASS
KW - CONSTRAINTS
KW - PRESSURE
KW - SYMMETRY
KW - ERA
KW - ACCRETION
KW - SEARCH
KW - SHADOW
U2 - 10.3847/2041-8213/acb704
DO - 10.3847/2041-8213/acb704
M3 - Letter
VL - 944
JO - The Astrophysical Journal Letters
JF - The Astrophysical Journal Letters
SN - 2041-8205
IS - 2
M1 - 31
ER -
ID: 338423232