File:PIA24574-SS433-ULXray-20210709.jpg
![File:PIA24574-SS433-ULXray-20210709.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/PIA24574-SS433-ULXray-20210709.jpg/800px-PIA24574-SS433-ULXray-20210709.jpg?20210713123740)
原始文件 (4,000 × 1,459像素,文件大小:193 KB,MIME类型:image/jpeg)
说明
说明
摘要
[编辑]描述PIA24574-SS433-ULXray-20210709.jpg |
English: PIA24574: The Changing X-ray Brightness of SS 433 (Illustration)
https://photojournal.jpl.nasa.gov/catalog/PIA24574 The cosmic object SS 433 contains a bright source of X-ray light surrounded by two hemispheres of hot gas. SS 433 tilts periodically, causing one X-ray beam to point toward Earth. This illustration shows the object known as SS 433, located in the Milky Way galaxy and only about 20,000 light-years from Earth. Researchers think SS 433 is an ultraluminous X-ray source, or ULX, a compact cosmic object that must have an X-ray luminosity that is about a million times the total luminosity output of the Sun (at all wavelengths). ULXs are so bright, they can be seen millions of light-years away, in other galaxies. SS 433 appears to be about 1,000 times dimmer than the minimum threshold to be considered a ULX. This faintness is likely a trick of perspective: The high-energy X-rays from SS 433 are initially confined within two cones of gas extending outward from opposite sides of the central object. These cones are similar to a mirrored bowl that surrounds a flashlight bulb: They corral the X-ray light from SS 433 into a narrow beam, until it escapes and is detected by NuSTAR. But because the cones are not pointing directly at Earth, NuSTAR can't see the object's full brightness. Figure 1 illustrates how SS 433 tilts back and forth in its orbit. Its brightness appears to change as it tilts toward and away from Earth. As with a flashlight, SS 433 appears much dimmer when it is viewed from the side. NuSTAR is a Small Explorer mission led by Caltech in Pasadena and managed by NASA's Jet Propulsion Laboratory, also in Pasadena, for NASA's Science Mission Directorate in Washington. For more information, visit http://www.nasa.gov/nustar and http://www.nustar.caltech.edu/. |
日期 | |
来源 | https://photojournal.jpl.nasa.gov/jpeg/PIA24574.jpg |
作者 | NASA/JPL-Caltech |
许可协议
[编辑]![]() |
此标签不表示文件的著作权状态。任何文件在附有此标签的同時还需要一个有效的著作权标签。请参阅许可协议说明页面以了解更多信息。 其他语言:
العربية ∙ беларуская (тарашкевіца) ∙ български ∙ català ∙ čeština ∙ dansk ∙ Deutsch ∙ English ∙ español ∙ فارسی ∙ français ∙ galego ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ polski ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/− |
Public domainPublic domainfalsefalse |
![]() |
本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zh、NASA版权方针页面或JPL图片使用方针。) | ![]() |
![]() |
警告:
|
文件历史
点击某个日期/时间查看对应时刻的文件。
日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
---|---|---|---|---|---|
当前 | 2021年7月13日 (二) 12:37 | ![]() | 4,000 × 1,459(193 KB) | Drbogdan(留言 | 贡献) | Uploaded a work by NASA/JPL-Caltech from https://photojournal.jpl.nasa.gov/jpeg/PIA24574.jpg with UploadWizard |
您不可以覆盖此文件。
文件用途
没有页面使用本文件。
全域文件用途
以下其他wiki使用此文件:
- ar.wikipedia.org上的用途
- en.wikipedia.org上的用途
- ko.wikipedia.org上的用途
- zh.wikipedia.org上的用途