File:The Sunyaev-Zeldovich effect in the Spiderweb protocluster (eso2304a).tiff
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Summary
editDescriptionThe Sunyaev-Zeldovich effect in the Spiderweb protocluster (eso2304a).tiff |
English: This image shows the protocluster around the Spiderweb galaxy (formally known as MRC 1138-262), seen at a time when the Universe was only 3 billion years old. Most of the mass in the protocluster does not reside in the galaxies that can be seen in the centre of the image, but in the gas known as the intracluster medium (ICM). The hot gas in the ICM is shown as an overlaid blue cloud. The hot gas was detected with the Atacama Large Millimeter/submillimeter Array (ALMA), of which ESO is a partner. As light from the cosmic microwave background –– the relic radiation from the Big Bang –– travels through the ICM, it gains energy when it interacts with the electrons in the hot gas. This is known as the Sunyaev-Zeldovich effect. By studying this effect, astronomers can infer how much hot gas resides in the ICM, and show that the Spiderweb protocluster is in the process of becoming a massive cluster held together by its own gravity. |
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Date | 29 March 2023 (upload date) | ||
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Author | ESO/Di Mascolo et al.; HST: H. Ford | ||
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This media was created by the European Southern Observatory (ESO).
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![]() ![]() This file is licensed under the Creative Commons Attribution 4.0 International license.
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current | 14:04, 8 April 2023 | ![]() | 1,500 × 1,500 (2.45 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://cdn.eso.org/images/original/eso2304a.tif via Commons:Spacemedia |
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Width | 1,500 px |
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Height | 1,500 px |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 58 |
Horizontal resolution | 10 dpc |
Vertical resolution | 10 dpc |
Data arrangement | chunky format |
Software used | Adobe Photoshop 24.1 (Windows) |
File change date and time | 14:13, 27 January 2023 |
Color space | sRGB |