Results 11 to 20 of about 37,815 (249)

No Supermassive Black Hole in M33? [PDF]

Science, 2001
We analyze optical long-slit spectroscopy of the nucleus of M33 obtained from the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope. Rather than the steep rise expected within the radius of influence of a supermassive black hole, the
Ferrarese, Laura, Joseph, Charles L., Merritt, David   +2 more
core   +5 more sources

Supermassive black hole ancestors [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
We study a model in which supermassive black holes (SMBHs) can grow by the combined action of gas accretion on heavy seeds and mergers of both heavy (m_s^h=10^5 Msol) and light (m_s^l = 10^2 Msol) seeds.
A. Ferrara, A. Petri, Abel, Abel, Alvarez, Baker, Begelman, Bromm, Bromm, Brusa, Ciardi, Dopcke, Fan, Fan, Fan, Fiore, Greif, Häring, Kuhlen, Lacey, Larson, Leitherer, Lodato, Loeb, Mapelli, Marconi, Marconi, Milosavljević, Mo, Mortlock, Natarajan, Nixon, Oh, Omukai, Omukai, Omukai, Parkinson, Preto, R. Salvaterra, Regan, Ricotti, Schneider, Sesana, Spaans, Springel, Tanaka, Valdés, Valiante, Volonteri, Volonteri, Vázquez, Warren, Willott, Willott, Willott, Wolcott-Green, Yoshida   +56 more
core   +4 more sources

Supermassive Black Hole Feedback

, 2019
Understanding the processes that drive galaxy formation and shape the observed properties of galaxies is one of the most interesting and challenging frontier problems of modern astrophysics. We now know that the evolution of galaxies is critically shaped
Basu, Kaustuv, Brummel-Smith, Corey, Chluba, Jens, Churazov, Eugene, Donahue, Megan, Fabian, Andrew, Faucher-Giguère, Claude-André, Gaspari, Massimo, Hlavacek-Larrondo, Julie, Hodges-Kluck, Edmund, Li, Yuan, McDonald, Michael, McNamara, Brian, Mroczkowski, Tony, Mushotzky, Richard, Nagai, Daisuke, Nulsen, Paul, Reynolds, Christopher, Ruszkowski, Mateusz, Vikhlinin, Alexey, Voit, Mark, Werner, Norbert, Yang, Hsiang-Yi Karen, Zhuravleva, Irina, ZuHone, John, Zweibel, Ellen   +25 more
core   +3 more sources

Formation of supermassive black hole seeds [PDF]

Publications of the Astronomical Society of Australia, 2016
The detection of quasars at $z>6$ unveils the presence of supermassive black holes (BHs) of a few billion solar masses. The rapid formation process of these extreme objects remains a fascinating and open issue.
Ferrara, Andrea, Latif, Muhammad A.
core   +5 more sources

Supermassive black holes [PDF]

Physics World, 2002
After a brief historical introduction, we summarize current efforts and accomplishments in the study of supermassive black holes.
Laura Ferrarese, David Merritt
openaire   +2 more sources

SUPERMASSIVE SEEDS FOR SUPERMASSIVE BLACK HOLES [PDF]

The Astrophysical Journal, 2013
9 pages, 2 figures; accepted for publication in ...
Hui Li, Daniel E. Holz, Jarrett L. Johnson, Daniel J. Whalen, Daniel J. Whalen   +4 more
openaire   +3 more sources

Supermassive black holes in BCGs [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractWe observed a sample of three Brightest Cluster Galaxies (BCGs), Abell 1836-BCG, Abell 2052-BCG, and Abell 3565-BCG, with the Advanced Camera for Surveys (ACS) and the Imaging Spectrograph (STIS) on board the Space Telescope. For each target galaxy we obtained high-resolution spectroscopy of the Hα and [N II] λ6583 emission lines at three slit ...
Jordi Miralda-Escudé, L. Coccato, E. Dalla Bontà, E. Dalla Bontà, Laura Ferrarese, Alessandro Pizzella, Enrico Maria Corsini   +6 more
openaire   +5 more sources

Supermassive black holes and their environments [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
We make use of the first high--resolution hydrodynamic simulations of structure formation which self-consistently follows the build up of supermassive black holes introduced in Di Matteo et al. (2007) to investigate the relation between black holes (BH), host halo and large--scale environment.
Tiziana Di Matteo, Jörg M. Colberg, Jörg M. Colberg   +2 more
openaire   +3 more sources

Perturbative Solution of the Einstein Constraints with Spin and Momentum Far Away From a Binary Source in the Bowen‐York Formalism

Fortschritte der Physik, Volume 71, Issue 8-9, September 2023., 2023
Abstract The momentum and Hamiltonian constraints of vacuum Einstein equations, within the Bowen‐York formalism, for two interacting black holes in close separation, with anti‐parallel spins and anti‐parallel linear momenta is studied. An analytical solution using perturbation theory is given.
Emel Altas, Emine Ertugrul, Bayram Tekin
wiley   +1 more source

Leptonic and Hadronic Radiative Processes in Supermassive-Black-Hole Jets

Galaxies, 2020
Supermassive black holes lying in the center of galaxies can launch relativistic jets of plasma along their polar axis. The physics of black-hole jets is a very active research topic in astrophysics, owing to the fact that many questions remain open on ...
Matteo Cerruti
doaj   +1 more source