Results 111 to 120 of about 1,391,040 (211)
A slitless spectroscopic survey for quasars near quasars
, 2008 We present the results of the “Quasars near Quasars” (QNQ) survey, a CCD-based slitless spectroscopic survey for faint $V\la 22$ quasars at $1.7\la z\la 3.6$ on 18 $26\farcm 2\times 33\farcm 5$ fields centred on bright quasars at $2.761.7$.
F. Selman, L. Wisotzki, G. Worseck
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A catalogue of quasars and active nuclei: 11th edition
, 2003 The recent release of the final installement of the 2dF quasar catalogue and of the first part of the Sloan catalogue, almost doubling the number of known QSOs, led us to prepare an updated version of our Catalogue of quasars and active nuclei which ...
P. Véron, M.-P. Véron-Cetty
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Spectral Variability in Radio-Loud Quasars
, 2014 The spectral variability of a sample of 44 Flat-Spectrum Radio Quasars (FSRQs) and 18 Steep-Spectrum Radio Quasars (SSRQs) in SDSS stripe 82 region is investigated. Twenty-five of 44 FSRQs show a bluer-when-brighter trend (BWB), while only one FSRQ shows
Gu, Minfeng
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Parsec-scale structure of quasars: dawn of the golden age?
, 2013 Half a century after their discovery, the study of quasars remains one of the most fascinating intellectual challenges in astronomy. Quasars are laboratories for everything from relativity to magnetohydrodynamics and are perhaps the best available probes
Ojha, Roopesh
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Qualifying Recital: Marty Merritt, double bass
, 2008 This recital is given in partial fulfillment of the requirements for the Master of Music degreeMr. Merritt is a student of Paul EllisonSonata in G Minor, Henry Eccles (1652-1742) -- Concerto No.
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Quasars vs. Microquasars: Scaling and Particle Acceleration [PDF]
Quasars and microquasars both contain accreting black holes and power nonthermal radio sources but differ in more than their scales: Quasars are proportionally much more efficient accelerators of energetic electrons.
Katz, J. I.
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On the masses of black holes in radio-loud quasars
, 2001 The central black hole masses of a sample of radio-loud quasars are estimated by using the data of H beta linewidth and the optical continuum luminosity.
Gu, MF, Jiang, DR, Cao, XW
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QUASARS, CARBON, AND SUPERNOVAE: EXPLORING THE DISTRIBUTION OF ELEMENTS IN AN EXPANDING UNIVERSE [PDF]
, 2013 This thesis consists of three different studies with common goal of understanding the constituents and structures of the universe. The current understanding of galaxy formation is not complete.
Vikas, Shailendra
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A massive quiescent galaxy at redshift 4.658. [PDF]
Nature, 2023 Carnall AC +12 more
europepmc +1 more source