Results 81 to 90 of about 1,397 (183)
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. +2 more
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No Supermassive Black Hole in M33?
Science, 2001 We observed the nucleus of M33, the third-brightest galaxy in the Local Group, with the Space Telescope Imaging Spectrograph at a resolution at least a factor of 10 higher than previously obtained. Rather than the steep rise expected within the radius of gravitational influence of a supermassive black hole, the random stellar velocities showed a ...
Merritt, David +2 more
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Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole
Advances in High Energy Physics, 2015 We study two interesting features of a black hole with an ordinary as well as phantom global monopole. Firstly, we investigate null geodesics which imply unstable orbital motion of particles for both cases.
M. Sharif, Sehrish Iftikhar
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Investigating the nature of mass distribution surrounding the Galactic supermassive black hole. [PDF]
Sci Rep, 2022 Chan MH, Lee CM, Yu CW.
europepmc +1 more source
Supermassive black holes then and now [PDF]
AIP Conference Proceedings, 1998 7 pages, to appear in The Proceedings of the Second International LISA Symposium on Graviational Waves, ed.
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Supermassive black holes from primordial black hole seeds [PDF]
Physical Review D, 2004 The observational evidence for a population of quasars powered by supermassive black holes of mass \geq 10^9 M_sun at redshifts z\geq 6 poses a great challenge for any model describing the formation of galaxies. Assuming uninterrupted accretion at the Eddington limit, seed black holes of at least 1000 M_sun are needed at z \approx 15.
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The Astrophysical JournalAccretion supermassive black holes in the center of active galaxies usually produce “jet”-collimated bipolar outflows of relativistic particles. Magnetic fields near the black hole event horizon may play a crucial role in the formation of jets/outflows ...
Yongyun Chen +6 more
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MEASURING SUPERMASSIVE BLACK HOLE SPINS IN AGN
Acta Polytechnica, 2013 Measuring the spins of supermassive black holes (SMBHs) in active galactic nuclei (AGN) can inform us about the relative role of gas accretion vs. mergers in recent epochs of the life of the host galaxy and its AGN.
Laura Brenneman
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Conceptual Analogies Between Multi-Scale Feeding and Feedback Cycles in Supermassive Black Hole and Cancer Environments. [PDF]
Front Oncol, 2021 Santoni M +4 more
europepmc +1 more source
87th Annual Meeting of the Meteoritical Society 2025: Abstracts
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley +1 more source