Results 131 to 140 of about 83,297 (253)

Orientation and quasar black hole mass estimation [PDF]

, 2015
M. S. Brotherton, Vikram Singh, Jessie C. Runnoe   +2 more
openalex   +1 more source

The Cosmic Dipole in the Quaia Sample of Quasars: A Bayesian Analysis [PDF]

, 2023
Vasudev Mittal, Oliver T. Oayda, Geraint F. Lewis   +2 more
openalex   +1 more source

Powerful Nuclear Outflows and Circumgalactic Medium Shocks Driven by the Most Luminous Known Obscured Quasar in the Universe

The Astrophysical Journal
We report integral field spectroscopy observations with the Near-Infrared Spectrograph on board the James Webb Space Telescope, targeting the 60 kpc environment surrounding the most luminous obscured quasar known at z = 4.6.
Andrey Vayner, Tanio Díaz-Santos, Peter R. M. Eisenhardt, Daniel Stern, Lee Armus, Daniel Anglés-Alcázar, Roberto J. Assef, Román Fernández Aranda, Andrew W. Blain, Hyunsung D. Jun, Chao-Wei Tsai, Niranjan Chandra Roy, Drew Brisbin, Carl D. Ferkinhoff, Manuel Aravena, Jorge González-López, Guodong Li, Mai Liao, Devika Shobhana, Jingwen Wu, Dejene Zewdie   +20 more
doaj   +1 more source

Evidence for kinematic variation with ionization level in quasars [PDF]

, 1985
William G. Mathews, E. J. Wampler
openalex   +1 more source

The statistics of radio galaxies & quasars at high redshift [PDF]

, 1986
J. A. Peacock, J. S. Dunlop
openalex   +1 more source

Large-scale surveys of the quasar proximity effect

The Open Journal of Astrophysics
The UV radiation from high redshift quasars causes a local deficit in the neutral hydrogen absorption (Lyman-alpha forest) in their spectra, known as the proximity effect.
Rupert Croft, Patrick Shaw, Ann-Marsha Alexis, Nianyi Chen, Yihao Zhou, Tiziana Di Matteo, Simeon Bird, Patrick Lachance, Yueying Ni   +8 more
doaj   +1 more source

EVN + MERLIN Observations of Radio-intermediate Quasars: Evidence for Boosted Radio-weak Quasars [PDF]

, 1996
Heino Falcke, Alok R. Patnaik, William Sherwood   +2 more
openalex   +1 more source

Quasar Radiative Feedback May Suppress Galaxy Growth on Intergalactic Scales at z = 6.3

The Astrophysical Journal Letters
We present observational evidence that intense ionizing radiation from a luminous quasar suppresses nebular emission in nearby galaxies on intergalactic scales at z = 6.3.
Yongda Zhu, Eiichi Egami, Xiaohui Fan, Fengwu Sun, George D. Becker, Christopher Cain, Huanqing Chen, Anna-Christina Eilers, Yoshinobu Fudamoto, Jakob M. Helton, Xiangyu Jin, Maria Pudoka, Andrew J. Bunker, Zheng Cai, Jaclyn B. Champagne, Zhiyuan Ji, Xiaojing Lin, Weizhe Liu, Hai-Xia Ma, Zheng Ma, Roberto Maiolino, George H. Rieke, Marcia J. Rieke, Pierluigi Rinaldi, Yang Sun, Wei Leong Tee, Feige Wang, Jinyi Yang, Minghao Yue, Junyu Zhang   +29 more
doaj   +1 more source

The properties of the quasars astrometric solution in Gaia DR2 [PDF]

, 2018
S. Liao, B. Bucciarelli, Zhaoxiang Qi, Sufen Guo, Zihuang Cao, Zhenghong Tang   +5 more
openalex   +1 more source

The Spectral Energy Distributions of Quasars and AGN [PDF]

, 2003
B. J. Wilkes
openalex   +1 more source