The 2dF QSO Redshift Survey (2QZ) . ... Before jumping into all the finer details of teh survey, a brief non-astronomer's guide to redshift surveys is available. ... The primary scientific aims of the QSO survey are: (1) to obtain the primordial fluctuation power spectrum out to COBE scales, (2) to determine the rate of QSO clustering evolution in the non-linear and linear regimes and hence obtain new limits on the value of and the bias parameter, (3) to apply a powerful geometric method to measure . ...

Today's APOD | ... Editor's choices for the most educational Astronomy Pictures of the Day about quasars: . APOD: 2003 May 20 - A Primordial Quasar . ... The nearest quasars are now known to be supermassive black holes in the centers of galaxies . Gas and dust that falls toward a quasar glows brightly, sometimes outglowing the entire home galaxy. ... Explanation: Quasars (QUASi-stellAR objects) lie near the edge of the observable Universe . ... APOD: 1999 December 26 - Gamma-Ray Quasar . ...

Back to Martin Elvis' Home Page . Color 2-D figure of structure (postscript) . 3-D views of the quasar structure: . 3-D Top view 3-D End-on view 3-D Side view . ... Quasar Atmospheres: Toward a `Low' Theory of Quasars , (Elvis M. 2003 astro-ph/0311436 , to be published in AGN and the SDSS, eds. G. Richards and P. Hall) . Talk from the Leicester `Winds Tori' Workshop, Sept 2004 (pdf, 21 pages) . Disk Winds summary from the Leicester `Winds Tori' Workshop, Sept 2004 (pdf, 7 pages) . ...

Stellarium 0.12.3 . ... Plugins . ... FileљStructure . FileљList . FileљMembers . plugins . Quasars . src . Quasar.hpp . ... 19 љ #ifndef _QUASAR_HPP_ . 20 љ #define _QUASAR_HPP_ 1 . ... 39 љ class Quasar : public StelObject . ... 41 љ friend class Quasars ; . ... 44 љ Quasar ( const QVariantMap& map); . 45 љ ~ Quasar (); . ... 53 љ return "Quasar" ; . ... 103 љ #endif // _QUASAR_HPP_ . Generated on Sat Aug 10 2013 17:12:43 for Stellarium by љ 1.8.3.1 ...

... III (OCR by CDS, corrections by H.Andernach) The first results of a search at 1410 MHz for 243 extragalactic objects from the Southern Hemisphere identified as quasars by Veron-Cetty Veron (1983) in "A Catalogue of extragalactic Radio-Source Identifications" are reported. ... The data are from Parkes catalogue . ... These data were modified using 'A catalogue of Quasars and Active Nuclei (2nd Ed.)' (1985), 'A catalogue of Quasars and Active Nuclei (3rd Ed.)', (1980), all of them by Veron-Cetty Veron...

... We construct a composite quasar spectrum from 149 HST FOS spectra of 80 quasars with mean redshift . ... The continuum longward of 1000? can be modeled as a power law with . ... The break in the power--law index is a feature expected in Comptonized accretion--disk spectra. ... The spectral features in the sub--Ly region of AGN spectra provide critical insights into the physical processes around the central engine, and they become accessible to IUE and HST at intermediate redshift. ...

Многофункциональный программный пакет QUASAR, созданный в Институте прикладной астрономии РАН, предназначен для массовой обработки РСДБ-наблюдений, выполненных на глобальных и региональных сетях станций. ... вычисление частных производных для всех параметров и сигналов; . ... оценивание всех сигналов, сессионных и глобальных параметров; . ... организация итерационного процесса с последовательным уточнением АКФ сигналов и/или глобальных параметров (координат станций и источников); . ...

... We present composite spectra of red and blue sub-samples of the PHFS quasars, and tabulate their emission line properties. The median H and [O III ] emission line equivalent widths of the red quasar sub-sample are a factor of ten weaker than those of the blue quasar sub-sample. ... Both the colours and the emission line equivalent widths of the red quasars can be explained by the addition of a featureless red synchrotron continuum component to an otherwise normal blue quasar spectrum. ...

... Comparison of a synthetic radio image and quaтАж . ... Title: Comparison of a synthetic radio image and quasar 3C 48 . Description: Comparison of a synthetic radio image (left panel) derived from the movie "Movie 1" and a VLBI image of the qusar 3C 48 (the second quasar discovered). ... Comparison of a synthetic radio image and quasar 3C 48 Comparison of a synthetic radio image (left panel) derived from the movie "Movie 1" and a VLBI image of the qusar 3C 48 (the second quasar discovered). ...

Astronomy Picture of the Day . Quasar in an Elliptical Galaxy . ... 9.04.1998 . ... Credit: J. S. Dunlop, R. J. McLure ( U. Edinburgh ), HST , NASA Explanation: Where do quasars live? ... The above false-color picture shows a central quasar embedded in an unusual elliptical galaxy . ... April . ... April 1998 . ... 1997 1998 . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: Elliptical Galaxy - quasar . Publications with words: Elliptical Galaxy - quasar . ...

... Astrophysics Group . ... Galaxies and Quasars . ... All galaxies emit radio waves as well as light. ... Often, they shoot out two jets, magnetic fields and very fast electrons (see below). ... This explains why we often see one very bright jet ? ... Quasars, the most powerful sources, often show a prominent jet, strong radio galaxies like the one to the right more usually don?t. The most powerful of these radio sources can be detected at immense distances in the Universe ? ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . des actualit†йs . des reportages . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil D†йcouverte de trois quasars qui fabriquent des mirages . ... 06/04/2016 - Le journal de bord de Thomas Pesquet (21) . ... 24/03/2016 - D†йcouverte de lacs et de rivi†иres sur Pluton . ...

... Press Release Images . ... Quasar PG1115+080 and Gravitational Lens . Left: The light from the single quasar PG 1115+080 is split and distorted in this infrared image. PG 1115+080 is at a distance of about 8 billion light years in the constellation Leo, and it is viewed through an elliptical galaxy lens at a distance of 3 billion light years. ... Right: In this NICMOS image, the four quasar images and the lens galaxy have been subtracted, revealing a nearly complete ring of infrared light. ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Publisher of Astronomy materials in Australia. Last Update August 28, 2005 . Listed Since August 28, 2005 . ... Australia . Web Site . ... Web . www.astronomy.net . About Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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... Tonight's Sky . ... The Magazine . News . Observing . ... Community . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... quasars . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... In one situation, we can use light from quasars to probe the material between us and them because that light may pass through one or more galaxies or gas clouds on its way to us. The gas inside the galaxies or the intergalactic clouds acts then as a filter, absorbing selected wavelengths from the quasar light. ... Light from a quasar must pass through clouds of gas and even faint galaxies -- each leaving its imprint on the light -- before we receive it here on Earth. ... Gravitational lensing . ...

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... The results of long-term monitoring of Gigahertz-Peaked Spectrum sources were found the statistically significant differences (0.05 significance level) in the high-frequency spectral index distribution between subgroups of galaxies and quasars. ... This can mean that the electron energy distribution for GPS galaxies is steeper than for GPS quasars. ... The first area corresponds to GPS-quasars that have statistically larger value of redfhift, second area corresponds to GPS-galaxies. ...

M87 Gas Disk and Optical Jet (STSci) . SEDS Messier Catalogue M87 Page (U. Arizona) . Black Hole and Jet in M87 (NASA/GSFC) . ... The large scale radio structure is shown in the 3CRR Atlas . Richard White's Virgo Cluster page has optical and X-ray images of the large-scale environment of M87 . ... HST Observes Distant Radio Galaxies (STScI) . HST Finds a Black Hole in NGC4261 (STScI) . HST finds a Bare Black Hole Pouring out Light in NGC6251 . ... Alan Bridle's Home Page . ...