Results 141 to 150 of about 117,210 (326)
The Astrophysical Journal, 2023 The formation of the first supermassive black holes is expected to have occurred in some most pronounced matter and galaxy overdensities in the early universe.
Qiong Li +16 more
doaj +1 more source
arXiv, 2011 The main objective of the Chinese LAMOST spectroscopic quasar survey is to discover 0.4 million new quasars from 1 million quasar candidates brighter than the magnitude limit i=20.5 in the next 5 years. This will hopefully provide the largest quasar sample for the further studies of AGN physics and cosmology.
arxiv
The Clustering of Simulated Quasars [PDF]
AIP Conference Proceedings, 2009 We analyze the clustering properties of quasars simulated using a semianalytic model built on the Millennium Simulation, with the goal of testing scenarios in which black hole accretion and quasar activity are triggered by galaxy mergers. When we select quasars with luminosities in the range accessible by current observations, we find that predicted ...
Silvia Bonoli +2 more
openaire +4 more sources
Quasar-mode Feedback in Nearby Type 1 Quasars: Ubiquitous Kiloparsec-scale Outflows and Correlations with Black Hole Properties [PDF]
, 2017 The prevalence and properties of kiloparsec-scale outflows in nearby Type 1 quasars have been the subject of little previous attention. This work presents Gemini integral field spectroscopy of 10 Type 1 radio-quiet quasars at .
D. Rupke, K. Gültekin, S. Veilleux
semanticscholar +1 more source
Is there a disc in the superluminal quasars? [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 We present a new evidence of the accretion disc in active galactic nuclei, by examining the properties of the Ha emission line versus viewing angle, in a sample of superluminal (SL) quasars. Both line velocity width (FWHM) and rest equivalent width (EW) correlate with viewing angle.
E. Rokaki +6 more
openaire +3 more sources
Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). II. Discovery of 32 quasars and luminous galaxies at 5.7 < z ≤ 6.8 [PDF]
, 2017 We present spectroscopic identification of 32 new quasars and luminous galaxies discovered at 5 ...
Y. Matsuoka +45 more
semanticscholar +1 more source
Indentation and Puncturing of Pristine and Flawed Soft Membranes
Fatigue &Fracture of Engineering Materials &Structures, EarlyView.ABSTRACT This paper investigates the mechanical behavior of soft elastomeric membranes under indentation by a rigid spherical object, with a particular focus on the failure mechanisms leading to puncture. The study examines both pristine membranes and those with pre‐existing flaws, such as cracks, to explore how these imperfections affect the ...
Matteo Montanari +3 more
wiley +1 more source
Ultraluminous infrared galaxies and the origin of quasars
, 1988 An evolutionary connection between ultraluminous infrared galaxies and quasars is deduced from the observations of all 10 infrared galaxies with luminosities L(8-1000 μm) ≥ 10^(12) L⊙, taken from a flux-limited sample of infrared bright galaxies. Images
D. Sanders +6 more
semanticscholar +1 more source
Astronomy & Astrophysics, 2018 Winds accelerated by active galactic nuclei (AGNs) are invoked in the most successful models of galaxy evolution to explain the observed physical and evolutionary properties of massive galaxies.
G. Vietri +23 more
semanticscholar +1 more source
On the isoperimetric Riemannian Penrose inequality
Communications on Pure and Applied Mathematics, Volume 78, Issue 5, Page 1042-1085, May 2025.Abstract We prove that the Riemannian Penrose inequality holds for asymptotically flat 3‐manifolds with nonnegative scalar curvature and connected horizon boundary, provided the optimal decay assumptions are met, which result in the ADM$\operatorname{ADM}$ mass being a well‐defined geometric invariant.
Luca Benatti +2 more
wiley +1 more source