|
|
 |
SPACE-MONSTER-GALAXY-BLACK-HOLE
Handout photo released by the European Space Agency on October 26, 2012 shows the giant elliptical galaxy in the centre of the image, taken by the NASA/ESA Hubble Space Telescope, which is the most massive and brightest member of the galaxy cluster Abell 2261. Spanning a little over one million light-years, the galaxy is about 20 times the diameter of our Milky Way galaxy. The bloated galaxy is a member of an unusual class of galaxies with a diffuse core filled with a fog of starlight. Normally, astronomers would expect to see a concentrated peak of light around a central black hole. The Hubble observations revealed that the galaxy's puffy core, measuring about 10 000 light-years, is the largest yet seen. The observations present a mystery, and studies of this galaxy may provide insight into how black hole behavior may shape the cores of galaxies. Astronomers used Hubble's Advanced Camera for Surveys and Wide Field Camera 3 to measure the amount of starlight across the galaxy, catalogued as 2MASX J17222717+3207571 but more commonly called A2261-BCG (short for Abell 2261 brightest cluster galaxy). Abell 2261 is located three billion light-years away. The observations were taken between March and May 2011. The Abell 2261 cluster is part of a multi-wavelength survey called the Cluster Lensing And Supernova survey with Hubble (CLASH). AFP PHOTO / NASA / ESA / M. Postman (Space Telescope Science Institute, USA), T. Lauer (National Optical Astronomy Observatory, USA), and the CLASH team
RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ESA/ NASA / M. Postman (Space Telescope Science Institute, USA), T. Lauer (National Optical Astronomy Observatory, USA), and the CLASH team" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS
|
|
|
|
Detalii fotografie |
| Loc: |
|
SPACE, SPACE |
|
| Sursa: |
|
AFP / Mediafax Foto |
|
| Fotograf: |
|
Postman/Lauer/CLASH te |
|
| Data: |
|
26 Octombrie 2012 |
|
| Dimensiuni: |
|
2641 x 1796 (1.08 MB) |
|
|
|
|
|
|