File:GW151226- A Second Confirmed Source of Gravitational Radiation.webm
Original file (WebM audio/video file, VP8/Vorbis, length 2.9 s, 1,280 × 720 pixels, 391 kbps overall, file size: 136 KB)
Captions
Summary
[edit]DescriptionGW151226- A Second Confirmed Source of Gravitational Radiation.webm |
English: Illustration Credit: LIGO, NSF
Details: http://apod.nasa.gov/apod/ap160615.html Explanation: A new sky is becoming visible. When you look up, you see the sky as it appears in light -- electromagnetic radiation. But just over the past year, humanity has begun to see our once-familiar sky as it appears in a different type of radiation -- gravitational radiation. Today, the LIGO collaboration is reporting the detection of GW151226, the second confirmed flash of gravitational radiation after GW150914, the historic first detection registered three months earlier. As its name implies, GW151226 was recorded in late December of 2015. It was detected simultaneously by both LIGO facilities in Washington and Louisiana, USA. In the featured video, an animated plot demonstrates how the frequency of GW151226 changed with time during measurement by the Hanford, Washington detector. This GW-emitting system is best fit by two merging black holes with initial masses of about 14 and 8 solar masses at a redshift of roughly 0.09, meaning, if correct, that it took roughly 1.4 billion years for this radiation to reach us. Note that the brightness and frequency -- here mapped into sound -- of the gravitational radiation peaks during the last second of the black hole merger. As LIGO continues to operate, as its sensitivity continues to increase, and as other gravitational radiation detectors come online in the next few years, humanity's new view of the sky will surely change humanity's understanding of the universe. General LIGO link: http://ligo.org/about.php Link to scientific papers: https://dcc.ligo.org/LIGO-P151226/public/main |
Date | |
Source | YouTube: GW151226: A Second Confirmed Source of Gravitational Radiation – View/save archived versions on archive.org and archive.today |
Author | APOD Videos |
Licensing
[edit]- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This file, which was originally posted to YouTube: GW151226: A Second Confirmed Source of Gravitational Radiation, was reviewed on 13 February 2020 by the automatic software YouTubeReviewBot, which confirmed that this video was available there under the stated Creative Commons license on that date. This file should not be deleted if the license has changed in the meantime. The Creative Commons license is irrevocable.
The bot only checks for the license, human review is still required to check if the video is a derivative work, has freedom of panorama related issues and other copyright problems that might be present in the video. Visit licensing for more information. If you are a license reviewer, you can review this file by manually appending | |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 11:32, 4 October 2018 | 2.9 s, 1,280 × 720 (136 KB) | Vislupus (talk | contribs) | Imported media from https://www.youtube.com/watch?v=XsA34rRHpuA |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
Transcode status
Update transcode statusMetadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Software used | Lavf57.25.100 |
---|