Results 71 to 80 of about 163,876 (250)

Fundamental physics opportunities with the next-generation Event Horizon Telescope

Living Reviews in Relativity
The Event Horizon Telescope (EHT) Collaboration recently published the first images of the supermassive black holes in the cores of the Messier 87 and Milky Way galaxies.
Dimitry Ayzenberg, Lindy Blackburn, Richard Brito, Silke Britzen, Avery E. Broderick, Raúl Carballo-Rubio, Vitor Cardoso, Andrew Chael, Koushik Chatterjee, Yifan Chen, Pedro V. P. Cunha, Hooman Davoudiasl, Peter B. Denton, Sheperd S. Doeleman, Astrid Eichhorn, Marshall Eubanks, Yun Fang, Arianna Foschi, Christian M. Fromm, Peter Galison, Sushant G. Ghosh, Roman Gold, Leonid I. Gurvits, Shahar Hadar, Aaron Held, Janice Houston, Yichao Hu, Michael D. Johnson, Prashant Kocherlakota, Priyamvada Natarajan, Héctor Olivares, Daniel Palumbo, Dominic W. Pesce, Surjeet Rajendran, Rittick Roy, Saurabh, Lijing Shao, Shammi Tahura, Aditya Tamar, Paul Tiede, Frédéric H. Vincent, Luca Visinelli, Zhiren Wang, Maciek Wielgus, Xiao Xue, Kadri Yakut, Huan Yang, Ziri Younsi   +47 more
doaj   +1 more source

Close supermassive binary black holes

, 2009
It has been proposed that when the peaks of the broad emission lines in active galactic nuclei (AGNs) are significantly blueshifted or redshifted from the systemic velocity of the host galaxy, this could be a consequence of orbital motion of a ...
Gaskell, C. Martin
core   +1 more source

Orbital Migration of Interacting Stellar Mass Black Holes in Disks around Supermassive Black Holes

, 2019
The merger rate of stellar-mass black hole binaries (sBHBs) inferred by the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) suggests the need for an efficient source of sBHB formation.
Amy Secunda, J. Bellovary, M. M. Low, K. Ford, B. McKernan, N. Leigh, W. Lyra, Z. Sándor   +7 more
semanticscholar   +1 more source

Stochastic Quantum Mechanics in Curved Spaces: Application to Schwarzschild Black Holes

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT In this work, we start from the hypothesis that the universe lives in a Gravitational Wave Background (GWB). From this hypothesis, it follows that space–time is not locally flat because we have to take into account the fluctuations of the GWB in space–time. This implies that sufficiently small particles will feel these oscillations, preventing
Juan S. Jerez‐Rodriguez, Tonatiuh Matos   +1 more
wiley   +1 more source

Observational Evidence for a Correlation between the Magnetic Field of Jets and Star Formation Rate in Host Galaxies

The Astrophysical Journal
Accretion 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, Qiusheng Gu, Junhui Fan, Xiaotong Guo, Xiaoling Yu, Nan Ding, Dingrong Xiong   +6 more
doaj   +1 more source

Black-Hole Bombs and Photon-Mass Bounds

, 2012
Generic extensions of the standard model predict the existence of ultralight bosonic degrees of freedom. Several ongoing experiments are aimed at detecting these particles or constraining their mass range.
A. A. Starobinsky, Akihiro Ishibashi, B. J. Carr, Emanuele Berti, Leonardo Gualtieri, Paolo Pani, S. Hawking, Vitor Cardoso, Y. B. Zel’Dovich   +8 more
core   +1 more source

On the relation between the mass of Compact Massive Objects and their host galaxies [PDF]

, 2017
Supermassive black holes and/or very dense stellar clusters are found in the central regions of galaxies. Nuclear star clusters are present mainly in faint galaxies while upermassive black holes are common in galaxies with masses $\geq 10^{10}$ M$_\odot $
Capuzzo-Dolcetta, R., Melo, I. Tosta e
core   +2 more sources

Interplay of Magnetic Reconnection and Current Sheet Kink Instability in the Earth's Magnetotail

Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.
Abstract Magnetic reconnection and current sheet kink instability often develop concurrently in current sheets, yet their dynamic interplay remains unclear. We investigate their interaction in the magnetotail of a 3D global magnetospheric hybrid‐Vlasov simulation. We identify the instability growth and saturation phase and estimate the evolution of the
G. Cozzani, M. Alho, I. Zaitsev, H. Zhou, S. Hoilijoki, L. Turc, M. Grandin, K. Horaites, M. Battarbee, Y. Pfau‐Kempf, U. Ganse, K. Papadakis, M. Palmroth   +12 more
wiley   +1 more source

Threshold drop in accretion density if dark energy is accreting onto a supermassive black hole

European Physical Journal C: Particles and Fields, 2019
Recent studies of galactic cores tell us that supermassive black holes are hosted at each of these cores. We got some evidences even. Besides, dark energy is expected to be distributed all over in our universe.
Ritabrata Biswas, Sandip Dutta
doaj   +1 more source

Formation of Supermassive Black Holes

, 2010
Evidence shows that massive black holes reside in most local galaxies. Studies have also established a number of relations between the MBH mass and properties of the host galaxy such as bulge mass and velocity dispersion.
A Freise, A Heger, A Loeb, A Marconi, A Marconi, A Merloni, A Merloni, A Sesana, A Soltan, AJ Barth, AJ Barth, AM Ghez, AV Gruzinov, B Devecchi, BJ Carr, BJ Carr, C Alcock, C Lacey, CF McKee, CJ Willott, CJ Willott, CL Fryer, D Merritt, D Reed, D Spolyar, DJ Eisenstein, DN Page, E Berti, E Gallo, E Quataert, E Ripamonti, E Ripamonti, EH Wehner, F Hoyle, F Iocco, F Santoro, FC Bosch van den, G Ghisellini, G Lodato, HJ Mo, I Shlosman, J Diemand, J Kormendy, J Magorrian, JA Regan, JC Tan, JC Vernaleo, JE Greene, JF Navarro, JH Wise, JL Johnson, JR Bond, JS Bullock, K Freese, K Gebhardt, K Gebhardt, K Gültekin, K Omukai, K Omukai, KG Arun, L Ferrarese, L Ferrarese, L Ferrarese, L Gao, L Spitzer, LC Ho, M Ajello, M Dijkstra, M Elvis, M Freitag, M Freitag, M Mateo, M Milosavljević, M Ricotti, M Saijo, M Shibata, M Spaans, M Tegmark, M Trenti, M Valluri, M Volonteri, M Volonteri, M Volonteri, M Volonteri, M Volonteri, M Walter, MA Abramowicz, MA Abramowicz, MA Gürkan, MA Gürkan, Marta Volonteri, MC Aller, MC Begelman, MC Begelman, MC Begelman, MC Begelman, MC Begelman, MC Begelman, MC Miller, MG Haehnelt, MG Walker, MG Walker, MJ Turk, MS Bovill, MY Khlopov, N Häring, N Yoshida, NY Gnedin, P Côté, P Madau, PC Clark, PF Hopkins, Q Yu, R Decarli, R Salvaterra, R Schneider, R Schödel, RD Blandford, RD Blandford, RK Sheth, RP Kudritzki, S Hawking, S Tremaine, SA Hughes, SDM White, SE Woosley, SF Portegies Zwart, SF Portegies Zwart, SF Portegies Zwart, SL Shapiro, SM Koushiappas, SP Oh, SR Majewski, T Abel, T Ebisuzaki, T Tanaka, TH Greif, TW Baumgarte, V Bromm, V Bromm, V Bromm, V Springel, VR Eke, W Zhang, X Fan, X Fan, X Fan, YB Zeldovich, YB Zel’Dovich, Z Barkat, Z Haiman   +150 more
core   +1 more source