Results 81 to 90 of about 264,425 (308)
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
Suppressing star formation in quiescent galaxies with supermassive black hole winds [PDF]
Nature, 2016 Quiescent galaxies with little or no ongoing star formation dominate the population of galaxies with masses above 2 × 1010 times that of the Sun; the number of quiescent galaxies has increased by a factor of about 25 over the past ten billion years (refs
Edmond Cheung +29 more
semanticscholar +1 more source
A supermassive black hole awakes [PDF]
Science, 2017 Active Galaxies Every large galaxy hosts a supermassive black hole at its center, which grows by consuming passing gas or stars. Most are quiescent, but when the black hole is feeding, an accretion disk forms, causing the galaxy nucleus to shine brightly as a quasar. Gezari et al.
openaire +3 more sources
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 supermassive black hole of Fornax A★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 The radio galaxy Fornax A (NGC 1316) is a prominent merger remnant in the outskirts of the Fornax cluster. Its giant radio lobes suggest the presence of a powerful AGN and thus a central supermassive black hole (SMBH). We present high-resolution adaptive optics assisted integral-field data of Fornax A, taken with SINFONI at the Very Large Telescope in ...
Karl Gebhardt +5 more
openaire +4 more sources
Black Hole Images as Tests of General Relativity: Effects of Spacetime Geometry
The Astrophysical Journal, 2023 The images of supermassive black holes surrounded by optically thin, radiatively inefficient accretion flows, like those observed with the Event Horizon Telescope, are characterized by a bright ring of emission surrounding the black hole shadow.
Ziri Younsi +2 more
doaj +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
Can Supermassive Black Holes alter Cold Dark Matter cusps through accretion? [PDF]
Mon.Not.Roy.Astron.Soc. 339 (2003) 949, 2002 We present some simple models to determine whether or not the accretion of cold dark matter by supermassive black holes is astrophysically important. Contrary to some claims in the literature, we show that supermassive black holes cannot significantly alter a power law density cusp via accretion, whether during mergers or in the steady state.
arxiv +1 more source
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
Extreme Mass Ratio Binary: Radiation reaction and gravitational waveform [PDF]
, 2005 For a successful detection of gravitational waves by LISA, it is essential to construct theoretical waveforms in a reliable manner. We discuss gravitational waves from an extreme mass ratio binary system which is expected to be a promising target of the ...
Barack L +8 more
core +2 more sources