AGNs Seen at Different Angles

Nrao_nrao_gallery_nrao18cf1_final2_1024

nrao_NRAO_Gallery_nrao18cf1_final2  

Credit: Sophia Dagnello, NRAO/AUI/NSF

One type of active galactic nuclei (AGN) -- a supermassive black hole that is gobbling up gas and dust -- is called a quasar. Quasars got their name because, when first discovered, they were called "quasi-stellar objects" meaning "star-like." They are very powerful sources of radiation, sometimes having luminosities thousands of times greater than entire galaxies, but when observed optically they appeared to only be distant faint stars or, in some cases, didn't appear at all. Nowadays we know these objects are actually the nuclei of galaxies with feeding supermassive black holes at their centers. These supermassive black holes swirl the nearby gas and dust into an accretion disk and often emit jets of particles away at nearly the speed of light. If one of these jets happens to be pointing directly at the Earth we call it a blazar.

Image Source: https://public.nrao.edu/?post_type=release=11064

Curator: NRAO/AUI/NSF, Charlottesville, Virginia, USA

Image Use Policy: Creative Commons Attribution 3.0 Unported license (http://creativecommons.org/licenses/by/3.0/)

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Image Details

Image Type
Artwork
Object Name
Quasar Blazar
Subject - General
Galaxy > Activity > AGN > Quasar
Galaxy > Activity > AGN > Blazar
Nrao_nrao_gallery_nrao18cf1_final2_1280
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ID
NRAO_Gallery_nrao18cf1_final2
Subject Category
E.5.3.2.1   E.5.3.2.3  
Subject Name
Quasar, Blazar
Credits
Sophia Dagnello, NRAO/AUI/NSF
Release Date
Lightyears
Redshift
Reference Url
https://public.nrao.edu/?post_type=release=11064
Type
Artwork
Image Quality
Good
Distance Notes
Facility
Instrument
Color Assignment
Band
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
FITS Header
Notes
Creator (Curator)
NRAO/AUI/NSF
URL
https://public.nrao.edu
Name
NRAO/AUI/NSF
Email
outreach@nrao.edu
Telephone
Address
520 Edgemont Road
City
Charlottesville
State/Province
Virginia
Publisher
NRAO/AUI/NSF
Publisher ID
nrao
Resource ID
Metadata Date
2018-07-12T14:04:50-04:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.