File:Motion of "S2" and other stars around the central Black Hole.ogv
Motion_of_"S2"_and_other_stars_around_the_central_Black_Hole.ogv (Ogg Theora video file, length 19 s, 256 × 256 pixels, 239 kbps, file size: 565 KB)
Captions
Summary
[edit]DescriptionMotion of "S2" and other stars around the central Black Hole.ogv |
English: An international team of astronomers, lead by researchers at the Max-Planck Institute for Extraterrestrial Physics (MPE), has directly observed an otherwise normal star orbiting the supermassive black hole at the center of the Milky Way Galaxy.
Ten years of painstaking measurements have been crowned by a series of unique images obtained by the Adaptive Optics (AO) NAOS-CONICA (NACO) instrument on the 8.2-m VLT YEPUN telescope at the ESO Paranal Observatory. It turns out that earlier this year the star approached the central Black Hole to within 17 light-hours - only three times the distance between the Sun and planet Pluto - while travelling at no less than 5000 km/sec . In a break-through paper appearing in the research journal Nature on October 17th, 2002, the present team reports their exciting results, including high-resolution images that allow tracing two-thirds of the orbit of a star designated "S2" . It is currently the closest observable star to the compact radio source and massive black hole candidate "SgrA*" ("Sagittarius A") at the very center of the Milky Way. The orbital period is just over 15 years. The new measurements exclude with high confidence that the central dark mass consists of a cluster of unusual stars or elementary particles, and leave little doubt of the presence of a supermassive black hole at the centre of the galaxy in which we live . ESO Press Video eso0226 was produced by the Max-Planck-Society and shows the observed motions of S2 and other stars in this area. |
||||
Date | |||||
Source | http://www.eso.org/public/videos/eso0226a/ | ||||
Author | ESO | ||||
Permission (Reusing this file) |
|
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 01:44, 26 April 2012 | 19 s, 256 × 256 (565 KB) | Miozzo (talk | contribs) |
You cannot overwrite this file.
File usage on Commons
There are no pages that use 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 | Xiph.Org libtheora 1.1 20090822 (Thusnelda) |
---|