2025
Multimessenger Probes of Supermassive Black Hole Spin Evolution
Ricarte A, Natarajan P, Narayan R, Palumbo D. Multimessenger Probes of Supermassive Black Hole Spin Evolution. The Astrophysical Journal 2025, 980: 136. DOI: 10.3847/1538-4357/ad9ea9.Peer-Reviewed Original ResearchLaser Interferometer Space AntennaSpin distributionSpin-downAccretion flowNext-generation Event Horizon TelescopeEvolution of supermassive black holesGeneral relativistic magnetohydrodynamic simulationsX-ray reflection spectroscopySupermassive black holesEvent Horizon TelescopeObserved spin distributionModulating spinRelativistic jetsAccretion diskGravitational wavesBlack holeCosmic timeMagnetohydrodynamic simulationsEvent horizonAccretion rateSpace AntennaCoherent accretionSpinning objectAccretionSpin
2022
The ngEHT’s Role in Measuring Supermassive Black Hole Spins
Ricarte A, Tiede P, Emami R, Tamar A, Natarajan P. The ngEHT’s Role in Measuring Supermassive Black Hole Spins. Galaxies 2022, 11: 6. DOI: 10.3390/galaxies11010006.Peer-Reviewed Original ResearchSupermassive black hole massSupermassive black holesBlack hole massSpin measurementsSupermassive black hole spinBlack holesEvent Horizon TelescopeEvent horizon scalesBlack hole spinHole spinCosmic timeTelescope ArrayHigh accretion ratesAccretion flowSpinCosmic AssemblyAccretion ratePre-existing samplesNew constraintsTelescopeHolesNew samplesConstraintsMeasurementsMultifrequency
2002
High‐redshift galaxies, their active nuclei and central black holes
Haehnelt M, Natarajan P, Rees M. High‐redshift galaxies, their active nuclei and central black holes. Monthly Notices Of The Royal Astronomical Society 2002, 300: 817-827. DOI: 10.1046/j.1365-8711.1998.t01-1-01951.x.Peer-Reviewed Original ResearchQuasi-stellar objectsSupermassive black holesBlack holesHalo massLuminosity functionAccretion flowBright quasi-stellar objectsHard X-ray backgroundB-band luminosity functionAdvection-dominated accretion flowBlack hole mass estimatesStar-forming galaxiesDark matter haloesHigh-redshift galaxiesTimes 107 yrOptical emission efficiencyX-ray backgroundCentral black holeLow optical efficiencySelf-gravitating discsHierarchical cosmogonyMatter haloesQSO phaseNearby galaxiesSame redshift
1998
High-redshift galaxies, their active nuclei and central black holes
Haehnelt M, Natarajan P, Rees M. High-redshift galaxies, their active nuclei and central black holes. Monthly Notices Of The Royal Astronomical Society 1998, 300: 817-827. DOI: 10.1111/j.1365-8711.1998.t01-1-01951.x.Peer-Reviewed Original ResearchQuasi-stellar objectsSupermassive black holesBlack holeHalo massMass function of dark matter halosMasses of supermassive black holesBright quasi‐stellar objectsBlack hole mass estimatesHard X-ray backgroundRedshift z = 3B-band luminosity functionDark matter halosStar-forming galaxiesX-ray backgroundSelf-gravitating disksOptical emission efficiencyHierarchical cosmogonyQSO phaseEddington rateAccretion flowHubble timeHigher redshiftsLuminosity functionIonizing backgroundAccretion mode
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