TAU astronomers find five-fold quasar

Image produced by Tel Aviv University astronomers from Hubble Telescope.

By
May 25, 2006 00:24
1 minute read.
TAU astronomers find five-fold quasar

astro quasar 88 ap. (photo credit: AP [file])

 
X

Dear Reader,
As you can imagine, more people are reading The Jerusalem Post than ever before. Nevertheless, traditional business models are no longer sustainable and high-quality publications, like ours, are being forced to look for new ways to keep going. Unlike many other news organizations, we have not put up a paywall. We want to keep our journalism open and accessible and be able to keep providing you with news and analyses from the frontlines of Israel, the Middle East and the Jewish World.

As one of our loyal readers, we ask you to be our partner.

For $5 a month you will receive access to the following:

  • A user experience almost completely free of ads
  • Access to our Premium Section
  • Content from the award-winning Jerusalem Report and our monthly magazine to learn Hebrew - Ivrit
  • A brand new ePaper featuring the daily newspaper as it appears in print in Israel

Help us grow and continue telling Israel’s story to the world.

Thank you,

Ronit Hasin-Hochman, CEO, Jerusalem Post Group
Yaakov Katz, Editor-in-Chief

UPGRADE YOUR JPOST EXPERIENCE FOR 5$ PER MONTH Show me later

NASA's Hubble Space Telescope has captured the first-ever picture of a group of five star-like images of a single distant quasar. The multiple-image effect seen in the Hubble picture is produced by a process called gravitational lensing, in which the gravitational field of a massive object - in this case, a cluster of galaxies - bends and amplifies light from an object - in this case, a quasar - farther behind it. The image was based on data obtained by Tel Aviv University astronomers from the Hubble Space Telescope. The Israeli team included TAU doctoral student Keren Sharon, former student (now post-doctoral fellow at the California Institute of Technology) Dr. Eran Ofek, TAU Prof. Dan Maoz and Dr. Tom Broadhurst. The image shows a very distant cluster of galaxies seven billion light-years away whose mass acts as a giant natural lens that magnifies objects behind it - an effect predicted by Albert Einstein that has been finding widespread application in astronomy in the last two decades. It is the only case known in which an entire cluster of galaxies lenses a background quasar about 10 billion light years away. A quasar is an object at the center of a galaxy powered by a giant black hole.

Join Jerusalem Post Premium Plus now for just $5 and upgrade your experience with an ads-free website and exclusive content. Click here>>

Related Content

[illustrative photo]
September 24, 2011
Diabetes may significantly increase risk of dementia

By UNIVERSITY OF MICHIGAN HEALTH SYSTEM