Results 101 to 110 of about 34,507 (229)

Evolution of supermassive stars as a pathway to black hole formation

, 2009
Supermassive stars, with masses greater than a million solar masses, are possible progenitors of supermassive black holes in galactic nuclei. Because of their short nuclear burning timescales, such objects can be formed only when matter is able to ...
Begelman, Begelman, Begelman, Begelman, Begelman, Bisnovatyi-Kogan, Blandford, Blandford, Bondi, Bromm, Burbidge, Clayton, Fowler, Fowler, Fuller, Hoyle, Hoyle, Iben, Levine, Mathews, Mitchell C. Begelman, Narayan, Narayan, Ozernoy, Quataert, Regan, Trenti, Trenti, Wise, Woosley   +29 more
core   +1 more source

A supermassive binary black hole with triple disks

, 2008
Hierarchical structure formation inevitably leads to the formation of supermassive binary black holes (BBHs) with a sub-parsec separation in galactic nuclei. However, to date there has been no unambiguous detection of such systems. In an effort to search
Bate M. R., Hayasaki K., Hayasaki K., Kimitake Hayasaki, Luis C. Ho, Roos N., Shakura N. I., Shin Mineshige   +7 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

Observational Evidence for Supermassive Black Holes [PDF]

, 1989
Alan Dressler
openalex   +1 more source

Is there life inside black holes?

, 2011
Bound inside rotating or charged black holes, there are stable periodic planetary orbits, which neither come out nor terminate at the central singularity. Stable periodic orbits inside black holes exist even for photons. These bound orbits may be defined
Balek V, Bičák J, Carter B, Chandrasekhar S, Dotti G, Frolov V P, Grunau S Kagramanova V, Kardashev N S, Landau L D, Misner C W, Novikov I D, Olivares M Saavedra J Leiva C Villanueva J R, Pugliese D Quevedo H Ruffini R, V I Dokuchaev, Wald R M, Zeldovich Ya B   +15 more
core   +1 more source

Supermassive black holes in spiral galaxies [PDF]

Proceedings of the International Astronomical Union, 2004
6 pages, 5 figures, to be published in "The Interplay among Black Holes, Stars and ISM in Galactic Nuclei," Th. Storchi Bergmann, L.C. Ho & H.R.
openaire   +3 more sources

Cosmology, primordial black holes, and supermassive particles [PDF]

, 1985
A. G. Polnarev, Maxim Yu. Khlopov
openalex   +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  

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

Supermassive Black Holes and Galaxy Morphology [PDF]

Astrophysics and Space Science, 1999
Invited Review, to appear in Proceedings "Towards a New Millennium in Galaxy Morphology" ed .
openaire   +3 more sources