Results 121 to 130 of about 24,041 (212)

Long-time-scale optical variability in quasars [PDF]

, 1976
Timothy M. Heckman
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Cosmic Himalayas: The Highest Quasar Density Peak Identified in a 10,000 deg2 Sky with Spatial Discrepancies between Galaxies, Quasars, and IGM H i

The Astrophysical Journal
We report the identification of a quasar overdensity in the BOSSJ0210 field, dubbed the Cosmic Himalayas, consisting of 11 quasars at z = 2.16−2.20, the densest overdensity of quasars (17 σ ) in the ∼10,000 deg ^2 of the Sloan Digital Sky Survey (SDSS ...
Yongming Liang, Masami Ouchi, Dongsheng Sun, Nobunari Kashikawa, Zheng Cai, Sebastiano Cantalupo, Kentaro Nagamine, Hidenobu Yajima, Takanobu Kirihara, Haibin Zhang, Mingyu Li, Rhythm Shimakawa, Xiaohui Fan, Kei Ito, Masayuki Tanaka, Yuichi Harikane, J. Xavier Prochaska, Andrea Travascio, Weichen Wang, Martin Elvis, Giuseppina Fabbiano, Junya Arita, Masafusa Onoue, John D. Silverman, Dong Dong Shi, Fangxia An, Takuma Izumi, Kazuhiro Shimasaku, Hisakazu Uchiyama, Chenghao Zhu   +29 more
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A Catalogue of Quasars [PDF]

, 1971
J. B. de Veny, W. Osborn, K. A. Janes
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An Extremely Metal-poor Lyα Emitter Candidate at z = 6 Revealed through Absorption Spectroscopy

The Astrophysical Journal Letters
We report the discovery of a Ly α emitter (LAE) candidate in the immediate foreground of the quasar PSO J158-14 at z _QSO = 6.0685 at a projected distance ∼29 pkpc that is associated with an extremely metal-poor absorption system.
Dominika Ďurovčíková, Anna-Christina Eilers, Robert A. Simcoe, Louise Welsh, Romain A. Meyer, Jorryt Matthee, Emma V. Ryan-Weber, Minghao Yue, Harley Katz, Sindhu Satyavolu, George Becker, Frederick B. Davies, Emanuele Paolo Farina   +12 more
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An Electrodynamic Model of Radio Galaxies and Quasars [PDF]

, 1970
J. H. Piddington
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Quasar Absorption Lines and Radio Polarization [PDF]

, 1970
F. F. Gardner, J. B. Whiteoak
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Optical structure in some low-redshift quasars [PDF]

, 1978
M. R. S. Hawkins
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Resolved structure associated with the quasar PKS 0837 - 12 [PDF]

, 1978
P. A. Wehinger, S. Wyckoff
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Penrose pair production as a power source of quasars and active galactic nuclei

, 1979
M. Kafatos, D. Leiter
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Beobachtungen eines explodierenden Quasars/Einer ungewissen Zukunft entgegen [PDF]

, 1972

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