Showing 21 - 40 results of 44 for search '"supermassive black hole"', query time: 0.06s Refine Results
  1. 21
  2. 22
  3. 23
  4. 24
  5. 25

    Dark matter annihilation via Breit-Wigner enhancement with heavier mediator by Yu Cheng, Shao-Feng Ge, Jie Sheng, Tsutomu T. Yanagida

    Published 2025-02-01
    “…We propose a new scenario that both the dark matter freeze-out in the early Universe and its possible annihilation for indirect detection around a supermassive black hole are enhanced by a Breit-Wigner resonance. …”
    Get full text
    Article
  6. 26

    Analytical and Numerical Methods for Circumbinary Disk Dynamics. II. Inclined Disks by Michal Pirog, Siddharth Mahesh, Sean T. McWilliams

    Published 2025-01-01
    “…These findings have implications for understanding both the expected gravitational-wave signal and electromagnetic counterparts from supermassive black hole binaries.…”
    Get full text
    Article
  7. 27

    Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole by M. Sharif, Sehrish Iftikhar

    Published 2015-01-01
    “…We then find Einstein rings, magnifications, and observables of the relativistic images for supermassive black hole at the center of galaxy NGC4486B. …”
    Get full text
    Article
  8. 28

    Relativistic Einstein rings of Reissner–Nordström black holes nonminimally coupled to electrodynamics by Rodrigo Maier

    Published 2025-01-01
    “…To compare our results with previous studies in the literature we model the lens as a Galactic supermassive black hole. For fixed coupling parameters we show that such angular positions decrease as the charge parameter increases. …”
    Get full text
    Article
  9. 29

    The cosmic timeline implied by the highest redshift quasars by Fulvio Melia

    Published 2024-12-01
    “…Abstract The conventional picture of supermassive black-hole growth in the standard model had already been seriously challenged by the emergence of $$\sim 10^9\;M_\odot $$ ∼ 10 9 M ⊙ quasars at $$z\sim 7.5$$ z ∼ 7.5 , conflicting with the predicted formation of structure in the early $$\varLambda $$ Λ CDM Universe. …”
    Get full text
    Article
  10. 30

    Interaction of an Outflow with Surrounding Gaseous Clouds as the Origin of Late-time Radio Flares in Tidal Disruption Events by Jialun Zhuang, Rong-Feng Shen, Guobin Mou, Wenbin Lu

    Published 2025-01-01
    “…Close encounter between a star and a supermassive black hole (SMBH) results in the tidal disruption of the star, known as a tidal disruption event (TDE). …”
    Get full text
    Article
  11. 31

    Constraining Binary Mergers in Active Galactic Nuclei Disks Using the Nonobservation of Lensed Gravitational Waves by Samson H. W. Leong, Justin Janquart, Aditya Kumar Sharma, Paul Martens, Parameswaran Ajith, Otto A. Hannuksela

    Published 2025-01-01
    “…We show that a considerable fraction of the BBH in AGN disks will be strongly lensed by the central supermassive black hole (SMBH). Thus, the nonobservation of lensed GW signals can be used to constrain the fraction of BBH binaries residing in AGN disks. …”
    Get full text
    Article
  12. 32

    Distinguishing Compact Objects in Extreme-Mass-Ratio Inspirals by Gravitational Waves by Lujia Xu, Shucheng Yang, Wenbiao Han, Xingyu Zhong, Rundong Tang, Yuanhao Zhang

    Published 2025-01-01
    “…Assuming the “true” GW signals originate from an extended body inspiraling into a supermassive black hole, we compute the signal-to-noise ratio (SNR) and Bayes factors between a test-particle waveform template and our model, which includes the spin and quadrupole of the compact object. …”
    Get full text
    Article
  13. 33

    H-AMR FORGE’d in FIRE. I. Magnetic State Transitions, Jet Launching, and Radiative Emission in Super-Eddington, Highly Magnetized Quasar Disks Formed from Cosmological Initial Cond... by Nicholas Kaaz, Matthew Liska, Alexander Tchekhovskoy, Philip F. Hopkins, Jonatan Jacquemin-Ide

    Published 2025-01-01
    “…Quasars are powered by supermassive black hole (SMBH) accretion disks, yet standard thin disk models are inconsistent with many observations. …”
    Get full text
    Article
  14. 34

    The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys by Ezequiel Treister, C. Megan Urry

    Published 2012-01-01
    “…Significant progress has been made in the last few years on understanding how supermassive black holes form and grow. In this paper, we begin by reviewing the spectral signatures of active galactic nuclei (AGN) ranging from radio to hard X-ray wavelengths. …”
    Get full text
    Article
  15. 35

    Can the New Neutrino Telescopes Reveal the Gravitational Properties of Antimatter? by Dragan Slavkov Hajdukovic

    Published 2011-01-01
    “…Our simplified calculations suggest that the antineutrinos emitted by supermassive black holes in the centre of the Milky Way and Andromeda Galaxy could be detected by the new generation of neutrino telescopes.…”
    Get full text
    Article
  16. 36

    Intermediate Mass Black Holes: Their Motion and Associated Energetics by C. Sivaram, Kenath Arun

    Published 2014-01-01
    “…We also consider their formation in the early universe and also discuss the possibility of supermassive black holes forming from mergers of several IMBH and compare the relevant time scales involved with other scenarios.…”
    Get full text
    Article
  17. 37

    Recoiling Black Holes: Electromagnetic Signatures, Candidates, and Astrophysical Implications by S. Komossa

    Published 2012-01-01
    “…Supermassive black holes (SMBHs) may not always reside right at the centers of their host galaxies. …”
    Get full text
    Article
  18. 38

    A Semi-analytical Model for Stellar Evolution in AGN Disks by Alexander J. Dittmann, Matteo Cantiello

    Published 2025-01-01
    “…Disks of gas accreting onto supermassive black holes may host numerous stellar-mass objects, formed within the disk or captured from a nuclear star cluster. …”
    Get full text
    Article
  19. 39

    Radiative properties and QPOs around charged black hole in Kalb–Ramond gravity by Shokhzod Jumaniyozov, Muhammad Zahid, Mirzabek Alloqulov, Inomjon Ibragimov, Javlon Rayimbaev, Sardor Murodov

    Published 2025-02-01
    “…We also obtain constrain values for the black hole mass, charge, KR field parameter, and QPO orbits found using Markovian chain Monte Carlo (MCMC) simulations for stellar mass (XTE J1550, GRS 1915+105), intermediate mass (M82-X1), and supermassive black holes (Sgr A*). Finally, we explore the radiative properties of the accretion disk around the charged black hole in KR gravity, such as the total radiation flux, accretion disc temperature, and differential luminosity.…”
    Get full text
    Article
  20. 40

    What Drives the H i Content of Central Galaxies—A Comparison between Hydrodynamic Simulations and Observations Using Random Forest by Xiao Li, Cheng Li, H. J. Mo

    Published 2025-01-01
    “…Beyond that, the accretion rate of supermassive black holes is the most important feature in TNG, while specific star formation rate is the top ranked in EAGLE. …”
    Get full text
    Article