Results 81 to 90 of about 58,921 (147)
, 2002 Review on quasar lensing. Part of a LNP Topical Volume "Dark matter and gravitational lensing" (eds. Courbin, Minniti) to be published by Springer-Verlag, 2002. Paper with full resolution figures at: ftp://ftp.astro.ulg.ac.be/pub/users/courbin/
Courbin, F., Saha, P., Schechter, P. L.
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A Physical Model for the Origin of Quasar Lifetimes
, 2005 We propose a model of quasar lifetimes in which observational quasar lifetimes and an intrinsic lifetime of rapid accretion are strongly distinguished by the physics of obscuration by surrounding gas and dust.
Bouchet P. +9 more
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Probing ~100 AU Intergalactic MgII Absorbing "Cloudlets" with Quasar Microlensing
, 2006 Intergalactic MgII absorbers are known to have structures down to scales ~ 10^{2.5} pc, and there are now indications that they may be fragmented on scales
Kayser R., Subo Dong
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The Color Variability of Quasars
, 2011 We quantify quasar color-variability using an unprecedented variability database - ugriz photometry of 9093 quasars from SDSS Stripe 82, observed over 8 years at ~60 epochs each. We confirm previous reports that quasars become bluer when brightening.
Abell +72 more
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Comment on "Biases in the Quasar Mass-Luminosity Plane" [PDF]
, 2010 Comment on "Biases in the Quasar Mass-Luminosity Plane"Comment: Comment on Biases in the Quasar Mass-Luminosity Plane; 3 ...
Elvis, Martin, Steinhardt, Charles
core
The First High Redshift Quasar from Pan-STARRS
, 2011 We present the discovery of the first high redshift (z > 5.7) quasar from the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1 or PS1).
Becker +42 more
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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
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Nature Astronomy, 2018 For consistency with Nature policy, the version posted here is the text as submitted to Nature Astronomy in November 2017. The final version is available at the DOI below, and differs slightly in wording.
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Unambiguous quasar microlensing [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 Revised version; 5 pages, 4 figures, to appear in ...
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A Glimpse at Quasar Host Galaxy Far-UV Emission, Using DLAs as Natural Coronagraphs
, 2014 In merger-driven models of massive galaxy evolution, the luminous quasar phase is expected to be accompanied by vigorous star formation in quasar host galaxies. In this paper, we use high column density Damped Lyman Alpha (DLA) systems along quasar sight
Bian, Fuyan +14 more
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