File:Lasers and supermassive black holes UGC 6093.jpg
![File:Lasers and supermassive black holes UGC 6093.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Lasers_and_supermassive_black_holes_UGC_6093.jpg/800px-Lasers_and_supermassive_black_holes_UGC_6093.jpg)
本预览的尺寸:800 × 419像素。 其他分辨率:320 × 168像素 | 640 × 335像素 | 1,024 × 536像素 | 1,280 × 670像素 | 2,560 × 1,341像素 | 3,918 × 2,052像素。
原始文件 (3,918 × 2,052像素,文件大小:2.78 MB,MIME类型:image/jpeg)
摘要
描述Lasers and supermassive black holes UGC 6093.jpg |
English: This image, captured by the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 (WFC3), shows a galaxy named UGC 6093. As can be easily seen, UGC 6093 is something known as a barred spiral galaxy — it has beautiful arms that swirl outwards from a bar slicing through the galaxy’s centre. It is classified as an active galaxy, which means that it hosts an active galactic nucleus, or AGN: a compact region at a galaxy’s centre within which material is dragged towards a supermassive black hole. As this black hole devours the surrounding matter it emits intense radiation, causing it to shine brightly.
But UGC 6093 is more exotic still. The galaxy essentially acts as a giant astronomical laser that spews out light at microwave, not visible, wavelengths — this type of object is dubbed a megamaser (maser being the term for a microwave laser). Megamasers such as UGC 6093 can be some 100 million times brighter than masers found in galaxies like the Milky Way. Hubble’s WFC3 observes light spanning a range wavelengths — from the near-infrared, through the visible range, to the near-ultraviolet. It has two channels that detect and process different light, allowing astronomers to study a remarkable range of astrophysical phenomena; for example, the UV-visible channel can study galaxies undergoing massive star formation, while the near-infrared channel can study redshifted light from galaxies in the distant Universe. Such multi-band imaging makes Hubble invaluable in studying megamaser galaxies, as it is able to untangle their intriguing complexity. |
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来源 | http://www.spacetelescope.org/images/potw1801a/ |
作者 | ESA/Hubble & NASA |
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ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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当前 | 2018年1月1日 (一) 14:30 | ![]() | 3,918 × 2,052(2.78 MB) | Jmencisom | User created page with UploadWizard |
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提供者 | ESA/Hubble & NASA |
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来源 | ESA/Hubble |
简短标题 |
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使用条款 |
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数据生成日期时间 | 2018年1月1日 (一) 06:00 |
使用软件 | Adobe Photoshop CC 2017 (Windows) |
文件修改日期时间 | 2017年6月9日 (五) 15:02 |
数字化日期时间 | 2017年1月19日 (四) 23:21 |
元数据最后修改日期 | 2017年6月9日 (五) 17:02 |
原始文件唯一ID | xmp.did:2a6ef509-0161-1b4b-91e3-3e7f18ac9f9a |
关键词 | UGC 6093 |
联系信息 |
-{R|http://www.spacetelescope.org}- Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
IIM版本 | 4 |