Results 131 to 140 of about 81,623 (245)
Rapidly Spinning Black Holes in Quasars: An Open Question
, 2008 Wang et al. (2006) estimated an average radiative efficiency of 30% -- 35% for quasars at moderate redshift. We find that their method is not independent of quasar lifetimes and thus that quasars do not necessarily have such high efficiencies ...
Alireza Rafiee +19 more
core +4 more sources
Symposium - International Astronomical Union, 1972 I report here work done at Jodrell Bank by Mr John Gilbert and myself at a wavelength of 49 cm, on the degree of linear polarization, m49. For most sources the polarization is considerably reduced from its short wavelength value. We presume that most of this depolarization is by Faraday rotation, or rather by Faraday dispersion, between different parts
openaire +2 more sources
A Search for Low-energy Gamma-rays from the Quasar 3C286 [PDF]
, 1965 D. J. Adams, R. R. Hillier, A.F. Janes
openalex +1 more source
Quasar: A Programming Framework for Rapid Prototyping [PDF]
, 2016 We present a new programming framework, Quasar, which facilitates GPU programming. Our high-level programming language relieves the developer of all implementation details such that he can focus on the algorithm and the required accuracy.
De Vylder, Jonas, Goossens, Bart
core +1 more source
Effects of Biases in Virial Mass Estimation on Cosmic Synchronization of Quasar Accretion
, 2011 Recent work using virial mass estimates and the quasar mass-luminosity plane has yielded several new puzzles regarding quasar accretion, including a sub-Eddington boundary on most quasar accretion, near-independence of the accretion rate from properties ...
Begelman +27 more
core +1 more source
Fast Outflow in the Host Galaxy of the Luminous z = 7.5 Quasar J1007+2115
The Astrophysical JournalThe James Webb Space Telescope opens a new window to directly probe luminous quasars powered by billion solar mass black holes in the Epoch of Reionization and their coevolution with massive galaxies with unprecedented details.
Weizhe Liu +26 more
doaj +1 more source
The Astrophysical JournalQuasar feedback may play a key role in the evolution of massive galaxies. The dust-reddened quasar F2M110648.35+480712 at z = 0.4352 is one of the few cases at its redshift that exhibits powerful quasar feedback through bipolar outflows.
Weizhe Liu +29 more
doaj +1 more source
UEG Week 2025 Oral Presentations
United European Gastroenterology Journal, Volume 13, Issue S8, Page S7-S188, October 2025.
wiley +1 more source