Effects of Superradiance in Active Galactic Nuclei

Abstract

A supermassive black hole (SMBH) at the core of an active galactic nucleus (AGN) provides room for the elusive ultra-light scalar particles (ULSP) to be produced through a phenomenon called \textit{superradiance}. This phenomenon produces a cloud of scalar particles around the black hole by draining its spin angular momentum. In this work, we present a study of the superradiant instability due to a scalar field in the vicinity of the central SMBH in an AGN. We begin by showing that the time-evolution of the gravitational coupling $\alpha$ in a realistic ambiance created by the accretion disk around the SMBH in AGN leads to interesting consequences such as the amplified growth of the scalar cloud, enhancement of the gravitational wave emission rate, and appearance of higher modes of superradiance within the age of the Universe. We then explore the consequence of superradiance on the characteristics of the AGN. Using the Novikov-Thorne model for an accretion disk, we divide the full spectrum into three wavelength bands- X-ray ($10^{-4}-10^{-2}\mu$m), UV (0.010-0.4~$\mu$m), and Vis-IR (0.4-100~$\mu$m) and observe sudden drops in the time-variations of the luminosities across these bands and Eddington ratio ($f_{\text{Edd}}$) with a characteristic timescale of superradiance. Using a uniform distribution of spin and mass of the SMBHs in AGNs, we demonstrate the appearance of depleted regions and accumulations along the boundaries of these regions in the planes of different band-luminosities and $f_{\text{Edd}}$. Finally, we discuss some possible signatures of superradiance that can be drawn from the observed time-variation of the AGN luminosities.

20 pages, 10 figures, 1 table; MNRAS accepted version: Discussion of self-interaction is included

References in corpus (68)

• LSST: from Science Drivers to Reference Design and Anticipated Data Products
• Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background
• First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
• Observational constraints on growth of massive black holes
• Exploring the String Axiverse with Precision Black Hole Physics
• Foundations of Black Hole Accretion Disk Theory
• Discovering the QCD Axion with Black Holes and Gravitational Waves
• First constraints on fuzzy dark matter from Lyman-$\alpha$ forest data and hydrodynamical simulations
• The Sloan Digital Sky Survey Quasar Catalog: Fourteenth Data Release
• A search for ultra-light axions using precision cosmological data
• Cosmological simulations of black hole growth: AGN luminosities and downsizing
• Searching for dilaton dark matter with atomic clocks
• Gravitational wave searches for ultralight bosons with LIGO and LISA
• Quasar Clustering and the Lifetime of Quasars
• Probing Ultralight Bosons with Binary Black Holes
• Black holes as particle detectors: evolution of superradiant instabilities
• Relativistic Accretion Disk Models of High State Black Hole X-ray Binary Spectra
• Grand unification of AGN activity in the LambdaCDM cosmology
• DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation
• Constraining the mass of dark photons and axion-like particles through black-hole superradiance
• Pulsar timing signal from ultralight scalar dark matter
• Stochastic and resolvable gravitational waves from ultralight bosons
• Black hole superradiance of self-interacting scalar fields
• Spectral properties of quasars from Sloan Digital Sky Survey data release 14: The catalog
• Ultra Light Boson Dark Matter and Event Horizon Telescope Observations of M87*
• Galactic Rotation Curves vs. Ultra-Light Dark Matter: Implications of the Soliton -- Host Halo Relation
• The evolution of AGN across cosmic time: what is downsizing?
• Gravitational radiation from an axion cloud around a black hole: Superradiant phase
• Dynamics of Dusty Radiation Pressure Driven Shells and Clouds: Fast Outflows from Galaxies, Star Clusters, Massive Stars, and AGN
• Floating and sinking: the imprint of massive scalars around rotating black holes
• Bosenova collapse of axion cloud around a rotating black hole
• A Grid of Relativistic, non-LTE Accretion Disk Models for Spectral Fitting of Black Hole Binaries
• The largely unconstrained multiphase nature of outflows in AGN host galaxies
• Measuring Black Hole Spin by the Continuum-Fitting Method: Effect of Deviations from the Novikov-Thorne Disc Model
• Superradiance evolution of black hole shadows revisited
• Probing the existence of ultralight bosons with a single gravitational-wave measurement
• The Energetics and Lifetimes of Local Radio Active Galactic Nuclei
• Black Hole Spin Constraints on the Mass Spectrum and Number of Axion-like Fields
• Advection Dominated Accretion Flows in the Kerr Metric: II. Steady State Global Solutions
• AGN feedback: galactic-scale outflows driven by radiation pressure on dust
• Black Hole Spin and Accretion Disk Magnetic Field Strength Estimates for more than 750 AGN and Multiple GBH
• Bosenova and Axiverse
• Bubbles and outflows: the novel JWST/NIRSpec view of the z=1.59 obscured quasar XID2028
• Fading AGN Candidates: AGN Histories and Outflow Signatures
• Orbital fingerprints of ultralight scalar fields around black holes
• Superradiant evolution of the shadow and photon ring of Sgr A${}^{\star }$
• JWST Reveals Widespread AGN-Driven Neutral Gas Outflows in Massive z ~ 2 Galaxies
• Scalar field effects on the orbit of S2 star
• Superradiant instability of black holes immersed in a magnetic field
• Aspects of Nonlinear Effect on Black Hole Superradiance
• Stringent axion constraints with Event Horizon Telescope polarimetric measurements of M87${}^{\star }$
• Evolution of black hole shadow in the presence of ultralight bosons
• Dense gas without star formation: The kpc-sized molecular disk in 3C326 N
• Impact of multiple modes on the black-hole superradiant instability
• Multiband gravitational-wave searches for ultralight bosons
• Thin accretion disk luminosity and its image around rotating black holes in perfect fluid dark matter
• Black hole superradiance with (dark) matter accretion
• Photon Ring Astrometry for Superradiant Clouds
• Using the motion of S2 to constrain scalar clouds around SgrA*
• Superradiant axion clouds around asteroid-mass primordial black holes
• A bound on energy extraction (and hairiness) from superradiance
• Birefringence Tomography for Axion Cloud
• Superradiant pion clouds around primordial black holes
• AGNs at the cosmic dawn: predictions for future surveys from a $\Lambda$CDM cosmological model
• Subdominant Modes of Scalar Superradiant Instability and Gravitational Wave Beats
• On the connection between AGN radiative feedback and massive black hole spin
• Bounds on ultralight bosons from the Event Horizon Telescope observation of Sgr A${}^{\ast }$
• Axion Cloud Decay due to the Axion-photon Conversion with Background Magnetic Fields

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• Probing Boson Clouds with Supermassive Black Hole Binaries
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• Exact Regions of Superradiant Instability of Kerr-Newman Black Holes and Massive Scalar Fields
• Experimental observation of subabsorption
• Effect of accretion on scalar superradiant instability