Results 131 to 140 of about 32,361 (211)

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

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

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  

Modeling Targets and Optimal Frequencies for Imaging the Shadows of Nearby Supermassive Black Holes

The Astrophysical Journal
Horizon-scale imaging of supermassive black holes has opened a new avenue for studying strong-field gravity and plasma physics in low-luminosity accretion flows.
J. Cole Faggert, Feryal Özel, Dimitrios Psaltis   +2 more
doaj   +1 more source

"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

Entropy of the Universe and Hierarchical Dark Matter. [PDF]

Entropy (Basel), 2022
Frampton PH.
europepmc   +1 more source

Reduced gas accretion onto galaxies due to effects of external giant radio lobes. [PDF]

Proc Natl Acad Sci U S A
Qiu Y, Cen R.
europepmc   +1 more source

Geodesics and gravitational waves in chaotic extreme-mass-ratio inspirals: the curious case of Zipoy-Voorhees black-hole mimickers. [PDF]

Gen Relativ Gravit, 2023
Destounis K, Huez G, Kokkotas KD.
europepmc   +1 more source