Results 131 to 140 of about 32,039 (196)

Accretion Onto Supermassive Black Hole Binaries

In this chapter, we give an overview of our current understanding of the physics of accreting massive black hole binaries (MBHBs), with a special focus on the latest developments in numerical simulations and General-Relativistic Magnetohydrodynamics (GRMHD) simulations in particular.
Gutiérrez, Eduardo M., Combi, Luciano, Ryan, Geoffrey   +2 more
openaire   +2 more sources

Stellar Black Holes Can “Stretch” Supermassive Black Hole Accretion Disks

The Astrophysical Journal Letters
Abstract Stellar black holes (sBHs) are widely believed to exist in the accretion disks of active galactic nuclei (AGNs). Previous studies often focus on the transient emission produced by embedded sBHs. Here, we explore the possible observational consequences of an AGN accretion disk that contains a population of accreting sBHs ...
Shuying Zhou, Mouyuan Sun, Tong Liu, Jian-Min Wang, Jun-Xian Wang, Yongquan Xue   +5 more
openaire   +3 more sources

Probing black holes in a dark matter spike of M87 using quasinormal modes

European Physical Journal C: Particles and Fields
Dark matter density can be significantly enhanced by the supermassive black hole at the galactic center, leading to a structure called dark matter spike. Dark matter spike may change the spacetime properties of black holes that constitute deviations from
Dong Liu, Yi Yang, Zheng-Wen Long
doaj   +1 more source

Simulating ULXs and Blazars as GRMHD Accretion Flows Around a Black Hole

The Astrophysical Journal
General relativistic magnetohydrodynamic (GRMHD) simulations have been instrumental in our understanding of high-energy astrophysical phenomena over the past two decades.
Mayank Pathak, Banibrata Mukhopadhyay
doaj   +1 more source

Time delay of light in the gravitational lensing of supermassive black holes in dark matter halos

European Physical Journal C: Particles and Fields
The dark matter halo has non-negligible effects on the gravitational lensing of supermassive black hole in the galaxy center. Our work presents a study on the time-delay of light in gravitational lensing of black holes enclosed by dark matter halos.
Chen-Kai Qiao, Ping Su
doaj   +1 more source

Cosmological evolution of supermassive black holes in galactic centers unveiled by hard X-ray observations. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci, 2015
Ueda Y.
europepmc   +1 more source

Using of the Correction Schwarzschild radius Equation and Its Application of the Black Holes

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
  This study is a try to compare between the traditional Schwarzschild’s radius and the equation of Schwarzschild’s radius including the photon’s wavelength that is suggested by Kanarev for black holes to correct the error in the calculation of ...
Majida H. Al-kubaisy
doaj  

"Fermi" bubbles are bursting from our galaxy. Their origins remain a mystery. [PDF]

Proc Natl Acad Sci U S A, 2023
Mann A.
europepmc   +1 more source

Little red dots as young supermassive black holes in dense ionized cocoons. [PDF]

Nature
Rusakov V, Watson D, Nikopoulos GP, Brammer G, Gottumukkala R, Harvey T, Heintz KE, Damgaard R, Sim SA, Sneppen A, Vijayan AP, Adams N, Austin D, Conselice CJ, Goolsby CM, Toft S, Witstok J.   +16 more
europepmc   +1 more source

Reading signatures of supermassive binary black holes in pulsar timing array observations. [PDF]

Nat Commun
Goncharov B, Sardana S, Sesana A, Tomson SM, Antoniadis J, Chalumeau A, Champion DJ, Chen S, Keane EF, Liu K, Shaifullah G, Speri L, Valtolina S.   +12 more
europepmc   +1 more source