Results 131 to 140 of about 91,098 (240)

VaDAR: Varstrometry for Dual AGN Using Radio Interferometry

The Astrophysical Journal
Binary and dual active galactic nuclei (AGNs) are an important observational tool for studying the formation and dynamical evolution of galaxies and supermassive black holes.
Emma Schwartzman, Tracy E. Clarke, Kristina Nyland, Nathan J. Secrest, Ryan W. Pfeifle, Henrique Schmitt, Shobita Satyapal, Barry Rothberg   +7 more
doaj   +1 more source

Radio-Astronomy: Smaller Quasars [PDF]

, 1967

openalex   +1 more source

Astrophysics: Brightness Changes in Quasars [PDF]

, 1968

openalex   +1 more source

A Surprising Excess of Radio Emission in Extremely Stable Quasars: A Unique Clue to Jet Launching?

The Astrophysical Journal
Quasars are generally divided into jetted radio-loud and nonjetted radio-quiet ones, but why only 10% of quasars are radio-loud has been puzzling for decades.
Wen-Yong Kang, Jun-Xian Wang, Zhen-Yi Cai, Hao-Chen Wang, Wen-Ke Ren, Mai Liao, Feng Yuan, Andrzej Zdziarski, Xinwu Cao   +8 more
doaj   +1 more source

Quasars: Significance of Clusters [PDF]

, 1969

openalex   +1 more source

Quasars and Pulsars: The Same Inside? [PDF]

, 1969

openalex   +1 more source

Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z ∼ 6 Estimated via Spectral Comparison with Low-z Quasars

The Astrophysical Journal
We report the distribution of black hole (BH) masses and Eddingont ratios estimated for a sample of 131 low luminosity quasars in the early cosmic epoch (5.6 < z < 7.0).
Ayumi Takahashi, Yoshiki Matsuoka, Masafusa Onoue, Michael A. Strauss, Nobunari Kashikawa, Yoshiki Toba, Kazushi Iwasawa, Masatoshi Imanishi, Masayuki Akiyama, Toshihiro Kawaguchi, Akatoki Noboriguchi, Chien-Hsiu Lee   +11 more
doaj   +1 more source

EIGER. V. Characterizing the Host Galaxies of Luminous Quasars at z ≳ 6

The Astrophysical Journal
We report JWST/NIRCam measurements of quasar host galaxy emissions and supermassive black hole (SMBH) masses for six quasars at 5.9 < z < 7.1 in the Emission-line galaxies and Intergalactic Gas in the Epoch of Reionization (EIGER) project. We obtain deep
Minghao Yue, Anna-Christina Eilers, Robert A. Simcoe, Ruari Mackenzie, Jorryt Matthee, Daichi Kashino, Rongmon Bordoloi, Simon J. Lilly, Rohan P. Naidu   +8 more
doaj   +1 more source

A Catalogue of Quasars [PDF]

, 1971
J. B. de Veny, W. Osborn, K. A. Janes
openalex   +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