File:Abell 2142- Chandra Maps Cosmic Pressure Fronts (2000-a2142).pdf
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[edit]DescriptionAbell 2142- Chandra Maps Cosmic Pressure Fronts (2000-a2142).pdf |
English: Chandra X-ray Observatory image of the galaxy cluster Abell 2142. The image shows a colossal cosmic "weather system" produced by the collision of two giant clusters of galaxies. For the first time, the pressure fronts in the system can be traced in detail, and they show a bright, but relatively cool 50 million degree central region (white) embedded in large elongated cloud of 70 million degree gas (magenta), all of which is roiling in a faint atmosphere of 100 million degree gas (faint magenta and dark blue). The bright source in the upper left is an active galaxy in the cluster. Abell 2142 is six million light years across and contains hundreds of galaxies and enough gas to make a thousand more. It is one of the most massive objects in the universe. Galaxy clusters grow to vast sizes as smaller clusters are pulled inward under the influence of gravity. They collide and merge over the course of billions of years, releasing tremendous amounts of energy that heats the cluster gas. The smoothness of the elongated cloud in the Chandra image suggests that these sub-clusters have collided two or three times in a billion years or more, and have nearly completed their merger. |
Date | 1 March 2000 (upload date) |
Source | Abell 2142: Chandra Maps Cosmic Pressure Fronts |
Author | NASA/CXC/SAO |
Other versions |
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Category InfoField | Groups & Clusters of Galaxies |
Color Code InfoField | Thermal |
Constellation InfoField | Corona Borealis |
Coordinates (J2000) InfoField | RA 15h 58m 19.80s |
Observation Date(s) InfoField | August 20, 1999 |
Scale InfoField | Image is 7.5 x 7.2 arcmin across. |
Instruments InfoField | ACIS |
This media is a product of the Chandra X-ray Observatory Credit and attribution belongs to the Chandra X-ray Center, NASA/SAO/Penn State University/MIT |
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[edit]Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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current | 21:37, 14 June 2024 | 1,275 × 1,650 (203 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://chandra.si.edu/photo/2000/a2142/a2142_hand.pdf via Commons:Spacemedia |
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Date and time of digitizing | 13:41, 25 September 2000 |
Software used | Adobe PageMaker 6.52 |
File change date and time | 17:52, 7 September 2017 |
Date metadata was last modified | 17:52, 7 September 2017 |
Conversion program | Acrobat Distiller 4.05 for Macintosh |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.6 |