Results 91 to 100 of about 36,081 (203)

Distant X-ray Galaxies: Insights from the Local Population

, 2004
A full understanding of the origin of the hard X-ray background requires a complete and accurate census of the distant galaxies that produce it. Unfortunately, distant X-ray galaxies tend to be very faint at all wavelengths, which hinders efforts to ...
A Comastri, A Comastri, AJ Barger, AJ Barger, AJ Barger, AJ Barger, AN Cox, AT Steffen, DM Alexander, EC Moran, EC Moran, EC Moran, F Pompilio, G Hasinger, G Risaliti, G Setti, G Vaucouleurs de, H Awaki, HD Tran, JS Ulvestad, JT Stocke, K Nandra, KC Gendreau, LE Kay, LL Cowie, M Schmidt, P Madau, P Madau, R Antonucci, R Gilli, R Maiolino, RF Mushotzky, RF Mushotzky, SL Lumsden, T Miyaji, Y Ueda   +35 more
core   +1 more source

Bayesian Black Hole Photogrammetry

The Astrophysical Journal
We propose an analytic dual-cone accretion model for horizon-scale images of the cores of low-luminosity active galactic nuclei, including those observed by the Event Horizon Telescope (EHT).
Dominic O. Chang, Michael D. Johnson, Paul Tiede, Daniel C. M. Palumbo   +3 more
doaj   +1 more source

COEVOLUTION BETWEEN SUPERMASSIVE BLACK HOLES AND BULGES IS NOT VIA INTERNAL FEEDBACK REGULATION BUT BY RATIONED GAS SUPPLY DUE TO ANGULAR MOMENTUM DISTRIBUTION [PDF]

, 2015
Renyue Cen
openalex   +1 more source

Correlations between supermassive black holes, hot atmospheres, and the total masses of early-type galaxies [PDF]

, 2019
Kiran Lakhchaura, Nhut Truong, Norbert Werner   +2 more
openalex   +1 more source

Life inside black holes

, 2012
We consider test planet and photon orbits of the third kind inside a black hole, which are stable, periodic and neither come out of the black hole nor terminate at the singularity.
B. Carter, D. C. Wilkins, E. Hackmann, J. Bičák, J. M. Bardeen, V. Balek, V. I. Dokuchaev   +6 more
core   +1 more source

Gravitational lensing by the supermassive black hole in the center of M31 [PDF]

, 2007
V. Bozza, S. Calchi Novati, L. Mancini
openalex   +1 more source

High-energy signatures of binary supermassive black holes

EPJ Web of Conferences, 2013
Some active galactic nuclei are supposed to harbor binary systems of supermassive black holes. They are an attractive target for gravitational wave experiments.
Vila Gabriela S., Pérez Daniela, Romero Gustavo E.   +2 more
doaj   +1 more source

Dynamics Around Supermassive Black Holes: Extreme-mass-ratio Inspirals as Gravitational-wave Sources

The Astrophysical Journal
Supermassive black holes and their surrounding dense stellar environments nourish a variety of astrophysical phenomena. We focus on the distribution of stellar-mass black holes around the supermassive black hole and the consequent formation of extreme ...
Barak Rom, Itai Linial, Karamveer Kaur, Re’em Sari   +3 more
doaj   +1 more source

Primordial black holes in cosmological simulations: growth prospects for supermassive black holes

The Open Journal of Astrophysics
It has long been suggested that a fraction of the dark matter in the Universe could exist in the form of primordial black holes (PBHs) that have existed since the radiation dominated era.
Lewis R Prole, John A Regan, Daxal Mehta, Peter Coles, Pratika Dayal   +4 more
doaj   +1 more source

The Black Hole Particle Accelerator as a Machine to make Baby Universes [PDF]

, 2013
General relativity predicts that the inner horizon of an astronomically realistic rotating black hole is subject to the mass inflation instability. The inflationary instability acts like a gravity-powered particle accelerator of extraordinary power ...
Hamilton, A. J. S.
core