Results 161 to 170 of about 94,086 (264)

Quasar Lifetime Measurements from Extended Lyα Nebulae at z ∼ 6

The Astrophysical Journal
The existence of billion-solar-mass black holes hosted in luminous quasars within the first gigayear of cosmic history poses a challenge to our understanding of supermassive black hole (SMBH) growth.
Dominika Ďurovčíková, Anna-Christina Eilers, Romain A. Meyer, Emanuele Paolo Farina, Eduardo Bañados, Frederick B. Davies, Joseph F. Hennawi, Chiara Mazzucchelli, Robert A. Simcoe, Fabian Walter   +9 more
doaj   +1 more source

Author Correction: QuasAr Odyssey: the origin of fluorescence and its voltage sensitivity in microbial rhodopsins. [PDF]

Nat Commun, 2022
Silapetere A, Hwang S, Hontani Y, Fernandez Lahore RG, Balke J, Escobar FV, Tros M, Konold PE, Matis R, Croce R, Walla PJ, Hildebrandt P, Alexiev U, Kennis JTM, Sun H, Utesch T, Hegemann P.   +16 more
europepmc   +1 more source

Changing-look Active Galactic Nuclei from the Dark Energy Spectroscopic Instrument. V. Dramatic Variability in High-ionization Broad Emission Lines

The Astrophysical Journal Supplement Series
We present a systematic search for changing-look (CL) quasars at high redshift z  > 0.9 by crossmatching the spectroscopic data sets from the Dark Energy Spectroscopic Instrument Data Release 1 and Sloan Digital Sky Survey Data Release 18. We identify 97
Zhi-Qiang Chen, Jun-Jie Jin, Wei-Jian Guo, Sheng-Xiu Sun, Zhi-Wei Pan, Chen-Xu Liu, Hua-Qing Cheng, Jing-Wei Hu, Zhen-Feng Sheng, Hu Zou, Zhao-Bin Chen, Qi Zheng, Qi-Rong Yuan   +12 more
doaj   +1 more source

Estimating Bolometric Luminosities of Type 1 Quasars with Self-organizing Maps

The Astrophysical Journal
We present a new method to calculate bolometric luminosities for unobscured, type 1 quasars with multiband photometric data. Bolometric luminosity is a fundamental property for understanding quasars, and it is commonly estimated from monochromatic ...
Jie Chen, Linhua Jiang, Shengxiu Sun, Zijian Zhang, Mouyuan Sun   +4 more
doaj   +1 more source

Pushing the limits of detectability: mixed dark matter from strong gravitational lenses. [PDF]

Mon Not R Astron Soc, 2023
Keeley RE, Nierenberg AM, Gilman D, Birrer S, Benson A, Treu T.   +5 more
europepmc   +1 more source

A catalogue of quasars and active nuclei: 12th edition

, 1998
M. Véron-Cetty, P. Véron
semanticscholar   +1 more source

Evidence for quasar fast outflows being accelerated at the scale of tens of parsecs. [PDF]

Sci Adv, 2022
He Z, Liu G, Wang T, Mou G, Green R, Bian W, Wang H, Ho LC, Sun M, Shen L, Arav N, Chen C, Wu Q, Guo H, Lin Z, Li J, Yi W.   +16 more
europepmc   +1 more source

Solar peculiar motion inferred from dipole anisotropy in redshift distribution of quasars appears to lie along the Galactic Centre direction. [PDF]

Sci Rep
Singal AK.
europepmc   +1 more source

Strong gravitational lenses from the Vera C. Rubin Observatory. [PDF]

Philos Trans A Math Phys Eng Sci
Shajib AJ, Smith GP, Birrer S, Verma A, Arendse N, Collett T, Daylan T, Serjeant S, LSST Strong Lensing Science Collaboration.   +8 more
europepmc   +1 more source

The Ellis-Baldwin test. [PDF]

Philos Trans A Math Phys Eng Sci
Secrest NJ.
europepmc   +1 more source