227 citations · 1.3k across the 30 of their papers we have counts for
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The effect of triaxial galaxy shapes on the dynamics of triple supermassive black holes in a cosmological context
Navonil Saha, Margarita Sobolenko, Peter Berczik +2
The hierarchical nature of galaxy formation in the Lambda cold dark matter (CDM) cosmological framework model often leads to the presence of multiple supermassive black holes (S…
Formation of a nuclear star cluster through the inspiral of globular clusters: A case study of the dwarf elliptical galaxy UGC 7346
Ismael Khan, Fazeel Mahmood Khan, Andrea V. Macciò +2
Nuclear star clusters (NSCs) are dense stellar environments located in the center of most galaxies. NSCs are thought to form through two primary methods; through the inspiral of gl…
The LISA Astrophysics MBHcatalogues Project: A comparison of predictions of simulated massive black hole binaries
David Izquierdo-Villalba, Melanie Habouzit, Matteo Bonetti +67
In the hierarchical paradigm of galaxy formation, central massive black holes (MBHs) are expected to coalesce after the merger of their host galaxies. One of the main goals of the…
Intermediate Mass Black Hole Binary Evolution in Nuclear Star Clusters: the effect of the stellar mass black hole population
Fazeel Mahmood Khan, Peter Berczik, Margarita Sobolenko +4
In this study, we investigate the dynamics of Intermediate-Mass Black Hole (IMBH) binaries within Nuclear Star Clusters (NSCs) that contain a population of stellar-mass black holes…
JWST Observations of the Double Nucleus in NGC 4486B: Possible Evidence for a Recent Binary SMBH Merger and Recoil
Behzad Tahmasebzadeh, Monica Valluri, Shashank Dattathri +19
A recent study of the compact elliptical galaxy NGC 4486B using JWST-NIRSpec IFU kinematics confirmed a supermassive black hole (SMBH) of mass (~8% of…
Handy Relation Between Binary Black Hole Merger Times and Host Galaxy Properties
Kelly Holley-Bockelmann, Fazeel Khan, Isaiah Williams +6
Over the past 15 years, the evidence has clearly demonstrated that massive black hole (MBH) binary merger timescales depend strongly on the structural and kinematic properties of t…
AGN Feedback-Induced Stellar Density Expansion in the Inner Regions of Early-Type Galaxies
Fazeel Mahmood Khan, Ángel Rodríguez, Andrea V. Macciò +1
Observations indicate that early-type galaxies exhibit varying slopes in the relation between their central stellar surface density and stellar mass (). Low-mass g…
Where Have All the Little Red Dots Gone? Supermassive Black Hole Binary Dynamics and its Impact on Galaxy Properties
Fazeel Mahmood Khan, Benjamin L. Davis, Andrea Valerio Macciò +1
Recent James Webb Space Telescope observations have revealed a peculiar class of galaxies at redshifts , characterized by extremely high central stellar densities and…
The potential for long-lived intermediate mass black hole binaries in the lowest density dwarf galaxies
Fazeel Mahmood Khan, Fiza Javed, Kelly Holley-Bockelmann +3
Intermediate Mass Black Hole (IMBH) mergers with masses are expected to produce gravitational waves (GWs) detectable by the Laser Interferometer Space Ant…
Eccentricity evolution of massive black hole binaries from formation to coalescence
Alessia Gualandris, Fazeel Mahmood Khan, Elisa Bortolas +4
Coalescing supermassive black hole binaries (BHBs) are expected to be the loudest sources of gravitational waves (GWs) in the Universe. Detection rates for ground or space-based de…
Extremely efficient mergers of intermediate mass black hole binaries in nucleated dwarf galaxies
Fazeel Mahmood Khan, Kelly Holley-Bockelmann
Gravitational waves emitted by merging black holes between will be detectable by the Laser Interferometer Space Antenna (LISA) with signal-to-noise ratios…
Inward Bound: The incredible journey of massive black holes as they pair and merge; I. The effect of mass ratio in flattened rotating galactic nuclei
Fazeel Mahmood Khan, Muhammad Awais Mirza, Kelly Holley-Bockelmann
Understanding how supermassive black holes (SMBHs) pair and merge helps to inform predictions of off-center, dual, and binary AGN, and provides key insights into how SMBHs grow and…
Astro2020 science white paper: The gravitational wave view of massive black holes
Monica Colpi, Kelly Holley-Bockelmann, Tamara Bogdanovic +16
Coalescing, massive black-hole (MBH) binaries are the most powerful sources of gravitational waves (GWs) in the Universe, which makes MBH science a prime focus for ongoing and upco…
Dynamical Evolution and Merger Time-scales of LISA Massive Black Hole Binaries in Disk Galaxy Mergers
Fazeel M. Khan, Pedro R. Capelo, Lucio Mayer +1
The Laser Interferometer Space Antenna (LISA) will detect gravitational-wave (GW) signals from merging supermassive black holes (BHs) with masses below ~M. It is th…
DLA and sub-DLA metallicity evolution: A case study of absorbers towards Q0338-0005
Waqas Bashir, Tayyaba Zafar, Fazeel M. Khan +1
The damped and sub-damped Lyman alpha systems (DLAs and sub-DLAs) traced in absorption against bright background quasars represent the main reserve of neutral hydrogen at high reds…
The Stellar Orbital Structure in Axisymmetric Galaxy Models with Supermassive Black Hole Binaries
Baile Li, Kelly Holley-Bockelmann, Fazeel Mahmood Khan
It has been well-established that particular centrophilic orbital families in non-spherical galaxies can, in principle, drive a black hole binary to shrink its orbit through three-…
Gravitational Wave Driven Mergers and Coalescence Time of Supermassive Black Holes
Fazeel Mahmood Khan, Peter Berczik, Andreas Just
The evolution of Supermassive Black Holes (SMBHs) initially embedded in the centres of merging galaxies realised with a stellar mass function (SMF) is studied from the onset of gal…
Galaxy Rotation and Supermassive Black Hole Binary Evolution
Muhammad Awais Mirza, Afnan Tahir, Fazeel Mahmood Khan +4
Supermassive black hole (SMBH) binaries residing at the core of merging galaxies are recently found to be strongly affected by the rotation of their host galaxies. The highly eccen…
Swift coalescence of supermassive black holes in cosmological mergers of massive galaxies
Fazeel M. Khan, Davide Fiacconi, Lucio Mayer +2
Supermassive black holes (SMBHs) are ubiquitous in galaxies with a sizable mass. It is expected that a pair of SMBHs originally in the nuclei of two merging galaxies would form a b…
Galaxy Rotation and Rapid Supermassive Black Hole Binary Coalescence
Kelly Holley-Bockelmann, Fazeel Mahmood Khan
During a galaxy merger, the supermassive black hole (SMBH) in each galaxy is thought to sink to the center of the potential and form a supermassive black hole binary; this binary c…
Scattering experiments meet N-body I: a practical recipe for the evolution of massive black hole binaries in stellar environments
Alberto Sesana, Fazeel Mahmood Khan
The N-independence observed in the evolution of massive black hole binaries (MBHBs) in recent simulation of merging stellar bulges suggests a simple interpretation beyond complex t…
Classification of Stellar Orbits in Axisymmetric Galaxies
Baile Li, Kelly Holley-Bockelmann, Fazeel Khan
It is known that two supermassive black holes (SMBHs) cannot merge in a spherical galaxy within a Hubble time; an emerging picture is that galaxy geometry, rotation, and large pote…
Ultramassive Black Hole Coalescence
Fazeel Khan, Kelly Holley-Bockelmann, Peter Berczik
Although supermassive black holes (SMBHs) correlate well with their host galaxies, there is an emerging view that outliers exist. Henize 2-10, NGC 4889, and NGC1277 are examples of…
Supermassive Black Hole Binary Evolution in Axisymmetric Galaxies: the final parsec problem is not a problem
Fazeel Khan, Kelly Holley-Bockelmann
During a galaxy merger, the supermassive black hole (SMBH) in each galaxy is thought to sink to the center of the potential and form a supermassive black hole binary; this binary c…