Results 71 to 80 of about 36,081 (203)

The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys

Advances in Astronomy, 2012
Significant progress has been made in the last few years on understanding how supermassive black holes form and grow. In this paper, we begin by reviewing the spectral signatures of active galactic nuclei (AGN) ranging from radio to hard X-ray ...
Ezequiel Treister, C. Megan Urry
doaj   +1 more source

Stellar Collisions in Galactic Nuclei: Impact on Destructive Events Near a Supermassive Black Hole [PDF]

, 2023
Shmuel Balberg, Gilad Yassur
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
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Dual Supermassive Black Holes at Close Separation Revealed by the Hyper Suprime-Cam Subaru Strategic Program [PDF]

, 2020
J. D. Silverman, Shenli Tang, Khee‐Gan Lee, Tilman Hartwig, Andy D. Goulding, Michael A. Strauss, Malte Schramm, Xuheng Ding, Rogemar A. Riffel, Seiji Fujimoto, Chiaki Hikage, Masatoshi Imanishi, K. Iwasawa, K. Jahnkę, Issha Kayo, Nobunari Kashikawa, Toshihiro Kawaguchi, Kotaro Kohno, Wentao Luo, Yoshiki Matsuoka, Yuichi Matsuda, Tohru Nagao, Masamune Oguri, Yoshiaki Ono, Masafusa Onoue, Masami Ouchi, Kazuhiro Shimasaku, Hyewon Suh, N. Suzuki, Yoshiaki Taniguchi, Yoshiki Toba, Yoshihiro Ueda, Naoki Yasuda   +32 more
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A VLBI Proper Motion Analysis of the Recoiling Supermassive Black Hole Candidate Mrk 1018 [PDF]

, 2023
Gregory J. Walsh, Sarah Burke-Spolaor, T. Joseph W. Lazio   +2 more
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Updated Mass Scaling Relations for Nuclear Star Clusters and a Comparison to Supermassive Black Holes

, 2013
We investigate whether nuclear star clusters and supermassive black holes follow a common set of mass scaling relations with their host galaxy's properties, and hence can be considered to form a single class of central massive object.
Alister W. Graham, Balcells, Balcells, Bekki, Bell, Bell, Côté, de Vaucouleurs, Ebisuzaki, Ferrarese, Ferrarese, Ferrarese, Gebhardt, González Delgado, Graham, Graham, Graham, Graham, Graham, Graham, Häring, Jarrett, Jorgensen, Kormendy, Magorrian, Marconi, McLaughlin, Mei, Merritt, Merritt, Mieske, Nicholas Scott, Novak, O'Leary, Schlegel, Seth, Silk, Tremaine, Turner, Wehner   +39 more
core   +1 more source

Formation of Merging Stellar-mass Black Hole Binaries by Gravitational-wave Emission in Active Galactic Nucleus Disks

The Astrophysical Journal
Many stellar-mass black holes (sBHs) are expected to orbit supermassive black holes at galactic centers. For galaxies with active galactic nuclei, it is likely that the sBHs reside in a disk.
Barak Rom, Re’em Sari, Dong Lai
doaj   +1 more source

Two Radio Cores in GPS J1543-0757: A New Dual Supermassive Black Hole System?

The Astrophysical Journal
We report on the discovery of a dual supermassive black hole system in the radio galaxy J1543−0757, with a projected separation between the two black holes of ∼46 mas. The result is based on recent multifrequency observations using the Very Long Baseline
Xiaopeng Cheng, Bong Won Sohn
doaj   +1 more source

Black Holes and Baryon Number Violation: Unveiling the Origins of Early Galaxies and the Low-Mass Gap

Galaxies
We propose that modifications to the Higgs potential within a narrow atmospheric layer near the event horizon of an astrophysical black hole could significantly enhance the rate of sphaleron transitions, as well as transform the Chern–Simons number into ...
Merab Gogberashvili, Alexander S. Sakharov   +1 more
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Emission Signatures from Subparsec Binary Supermassive Black Holes. III. Comparison of Models with Observations [PDF]

, 2020
Khai Nguyen, Tamara Bogdanović, Jessie C. Runnoe, Michael Eracleous, Steinn Sigurðsson, Todd A. Boroson   +5 more
openalex   +1 more source