Results 71 to 80 of about 132,127 (279)
The Black Hole Explorer: motivation and vision [PDF]
Astronomical Telescopes + InstrumentationWe present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry (VLBI) to space.
Michael D. Johnson +66 more
semanticscholar +1 more source
Binary Mergers near a Supermassive Black Hole: Relativistic Effects in Triples [PDF]
Astrophysical Journal, 2019 We study the general relativistic (GR) effects induced by a spinning supermassive black hole on the orbital and spin evolution of a merging black hole binary (BHB) in a hierarchical triple system.
Bin Liu, D. Lai, Yihan Wang
semanticscholar +1 more source
Evolution of supermassive black holes [PDF]
, 2011 The cosmological evolution of supermassive black holes (SMBHs) seems to be intimately linked to their host galaxies. Active galactic nuclei (AGN) can be probed by deep X-ray surveys. We review results from large X-ray selected samples including first results from the XMM-Newton COSMOS survey.
Günther Hasinger, Andreas Müller
openaire +3 more sources
The GLEAMing of the first supermassive black holes
Publications of the Astronomical Society of Australia, 2020 AbstractWe present the results of a new selection technique to identify powerful ($L_{\rm 500\,MHz} \gt 10^{27}\,\text{WHz}^{-1}$) radio galaxies towards the end of the Epoch of Reionisation. Our method is based on the selection of bright radio sources showing radio spectral curvature at the lowest frequency (${\sim}100\,\text{MHz}$) combined with the ...
Guillaume Drouart +9 more
openaire +6 more sources
Strong deflection lensing by a Lee–Wick black hole
Physics Letters B, 2017 We study strong deflection gravitational lensing by a Lee–Wick black hole, which is a non-singular black hole generated by a high derivative modification of Einstein–Hilbert action.
Shan-Shan Zhao, Yi Xie
doaj +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.
openaire +5 more sources
FRB 121102: A Repeatedly Combed Neutron Star by a Nearby Low-luminosity Accreting Supermassive Black Hole [PDF]
, 2018 The origin of fast radio bursts (FRBs) remains mysterious. Recently, the only repeating FRB source, FRB 121102, was reported to possess an extremely large and variable rotation measure (RM).
Bing Zhang
semanticscholar +1 more source
Cold, clumpy accretion onto an active supermassive black hole [PDF]
Nature, 2016 The so-called accretion flow that powers the growth of supermassive black holes in galaxy centres is assumed to be dominated by a smooth, steady flow of very hot plasma, but now observations instead reveal a clumpy accretion of very cold molecular clouds
Grant R. Tremblay +30 more
semanticscholar +1 more source
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 by the energy injection from accreting supermassive black holes (SMBHs). However, it is unclear how
Ruszkowski, Mateusz +25 more
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The formation of supermassive black holes and the evolution of supermassive stars [PDF]
Classical and Quantum Gravity, 2001 The existence of supermassive black holes is supported by a growing body of observations. Supermassive black holes and their formation events are likely candidates for detection by proposed long-wavelength, space-based gravitational wave interferometers like LISA.
Stuart L. Shapiro, Kimberly C. B. New
openaire +4 more sources