Radio-astronomers form telescope the size of Earth

January 13, 2009
Telescopes and networks used for the e-VLBI observation.

(PhysOrg.com) -- Radio telescopes around the world will join forces this week to carry out a unique observation of three quasars, distant galaxies powered by super-massive black holes at their cores.

The nearly continuous 33-hour observation will be conducted on Jan 15-16 as part of a demonstration at the opening event for the International Year of Astronomy 2009 (IYA 2009) in Paris.

17 telescopes in Asia, Australia, Europe, North America and South America, including several operated from The University of Manchester’s Jodrell Bank Observatory, will take part in the mammoth project.

Arpad Szomoru, Head of Technical Operations and R&D at the Joint Institute for VLBI in Europe (JIVE) noted, "The unique aspect of these observations is that telescopes located all around the globe will be brought together to work in real-time as a single gigantic instrument."

Using an astronomical technique called electronic, real-time Very Long Baseline Interferometry, or e-VLBI, participating telescopes will observe the same object simultaneously. Data from each telescope will be streamed across the globe through high-speed optical networks to a purpose-built supercomputer at JIVE in the Netherlands. This machine acts as the focus of the giant distributed telescope, the largest real-time telescope ever, combining the signals collected from instruments across the world.

“By combining information from such widely separated radio telescopes we can produce incredibly sharp images with up to one hundred times better resolution than those available from the best optical telescopes”, said Simon Garrington, Director of the UK’s MERLIN/VLBI National Facility. “It’s like being able to sit here in Manchester and read a newspaper in London”.

With e-VLBI the ability to send data electronically and combine it in real-time has the additional advantage of providing results to astronomers within hours of conducting an observation, rather than weeks later via the traditional VLBI method of recording data onto disks and shipping it to the correlator.

JIVE Director Huib Jan van Langevelde explained, "With VLBI we can zoom in on the most energetic events in the universe, and the new e-VLBI technique allows us to do this fast enough to catch such events on the time-scale that they occur and respond quickly."

Representatives from participating institutes will attend the IYA 2009 Opening Ceremony in Paris to demonstrate the observation to over 800 attendees, including Nobel Prize winners and aspiring young scientists from over 100 countries. Organizers of the observation have also launched an educational website about e-VLBI at www.expres-eu.org/iya2009 .

Provided by University of Manchester

Explore further: Chandra data suggest giant collision triggered 'radio phoenix'

Related Stories

Discovering dust-obscured active galaxies as they grow

August 27, 2015

A group of researchers from Ehime University, Princeton University, and the National Astronomical Observatory of Japan (NAOJ) among others has performed an extensive search for Dust Obscured Galaxies (DOGs) using data obtained ...

First signals from CALET on the ISS

August 27, 2015

Five days after it launched from the Tanegashima Space Center on board the HTV-5 Transport Module, operated by the Japan Aerospace Exploration Agency (JAXA), the CALorimetric Electron Telescope (CALET) docked at the International ...

Recommended for you

Astronomers detect the farthest galaxy yet with Keck telescope

September 4, 2015

A team of Caltech researchers that has spent years searching for the earliest objects in the universe now reports the detection of what may be the most distant galaxy ever found. In an article published August 28, 2015 in Astrophysical ...

Prawn Nebula: Cosmic recycling

September 2, 2015

Dominating this image is part of the nebula Gum 56, illuminated by the hot bright young stars that were born within it. For millions of years stars have been created out of the gas in this nebula, material which is later ...

1 comment

Adjust slider to filter visible comments by rank

Display comments: newest first

Thecis
5 / 5 (1) Jan 14, 2009
The Netherlands..., isn't that a province somewhere ;-)

Nice initiave. Pity they want to do it only for the Year of Astronomy 2009. These kind of events should happen more often. Why competing with each other when you can join forces (yes...., I know there are lots of reasons....)

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.