Quasars

Results: 73



#Item
41Quasar / Radio astronomy / Physics / Gravitational lens / Active galactic nucleus / Galaxy / Twin Quasar / Cloverleaf quasar / Astronomy / General relativity / Gravitational lensing

Astronomers using Hubble discover quasars acting as gravitational lenses

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Source URL: phys.org

Language: English - Date: 2015-02-12 07:18:48
42Astrophysics / Space plasmas / Quasar / Radio astronomy / Reionization / Redshift / Photometric redshift / Physical cosmology / Physics / Astronomy

Quasars/AGN with WFIRST: Science Goals vs. Performance Xiaohui Fan University of Arizona Quasar Surveys

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Source URL: conference.ipac.caltech.edu

Language: English - Date: 2014-11-18 19:51:52
43Electromagnetic radiation / X-ray telescopes / Radiography / Quasar / Radio astronomy / Nuclear Spectroscopic Telescope Array / Active galactic nucleus / X-ray / Compton Gamma Ray Observatory / Spacecraft / Astronomy / Space telescopes

D RAFT VERSION AUGUST 19, 2014 Preprint typeset using LATEX style emulateapj v[removed]WEAK HARD X-RAY EMISSION FROM BROAD ABSORPTION LINE QUASARS: EVIDENCE FOR INTRINSIC X-RAY WEAKNESS B. L UO , 1,2 W. N. B RANDT, 1,2 D

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Source URL: www.nustar.caltech.edu

Language: English - Date: 2014-09-29 15:19:23
44Quasar / Radio astronomy / Astrophysics / 3C 273 / Galaxy / Cosmic distance ladder / Redshift / Blazar / Active galactic nucleus / Astronomy / Physical cosmology / Physics

HUBBLE SPACE TELESCOPE IMAGES OF A SAMPLE OF TWENTY NEARBY LUMINOUS QUASARS a John N. Bahcall, Sofia Kirhakos, and David H. Saxe, Institute for Advanced Study, School of Natural Sciences, Princeton, NJ[removed]Donald P. Sc

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Source URL: www.sns.ias.edu

Language: English - Date: 2002-05-22 12:03:33
45Space / Quasars / Radio astronomy / HE0450-2958 / European Southern Observatory / Active galactic nucleus / Spiral galaxy / Galaxy / Very Large Telescope / Astronomy / Supermassive black holes / Extragalactic astronomy

HEIC0511: FOR RELEASE 19:00 (CEST)/1:00 PM EDT 14 September, 2005 News release: Black hole in search of a home 14-September-2005 The detection of a super massive black hole without a massive host galaxy is the surprising

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Source URL: www.spacetelescope.org

Language: English - Date: 2005-09-13 06:21:13
46Space / Quasars / Radio astronomy / HE0450-2958 / European Southern Observatory / Active galactic nucleus / Spiral galaxy / Galaxy / Very Large Telescope / Astronomy / Supermassive black holes / Extragalactic astronomy

 HEIC0511: FOR RELEASE 19:00 (CEST)/1:00 PM EDT 14 September, 2005 News release:

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Source URL: www.spacetelescope.org

Language: English - Date: 2005-09-13 06:21:31
47Radio astronomy / Magnitude / Apparent magnitude / Square degree / Observational astronomy / Astronomy / Quasar

107 How Many Quasars Are There? Quasars are among the most luminous galaxies in the universe, and because of this, astronomers can detect them to great distances

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Source URL: spacemath.gsfc.nasa.gov

Language: English - Date: 2009-12-29 23:09:42
48Supermassive black holes / Galaxies / Quasar / Radio astronomy / Plasma physics / Active galactic nucleus / Black hole / X-ray astronomy / Chandra X-ray Observatory / Astronomy / Extragalactic astronomy / Space

Chandra X-Ray Observatory X-Ray Astronomy Field Guide Quasars are peculiar objects that radiate as much energy per second as a thousand or more galaxies, from a region that has a diameter about

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Source URL: chandra.si.edu

Language: English - Date: 2008-01-29 13:13:38
49Supermassive black holes / Galaxies / Quasar / Radio astronomy / Plasma physics / Active galactic nucleus / Black hole / X-ray astronomy / Chandra X-ray Observatory / Astronomy / Extragalactic astronomy / Space

Chandra X-Ray Observatory X-Ray Astronomy Field Guide Quasars are peculiar objects that radiate as much energy per second as a thousand or more galaxies, from a region that has a diameter about

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Source URL: www.chandra.harvard.edu

Language: English - Date: 2008-01-29 13:13:38
50Blazar / OVV quasars / BL Lac object / Quasar / 3C 279 / Fermi Gamma-ray Space Telescope / Muon / Astronomy / Spacecraft / Astrophysics

Studying  emission  mechanisms   of  AGN   ©NASA   Dr.  Karsten  Berger  

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Source URL: fermi.gsfc.nasa.gov

Language: English - Date: 2013-06-20 13:37:45
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