Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Astronomers map the hidden Universe

13.05.2003


Astronomers from Cardiff University are completing the first survey ever for cosmic hydrogen, the primeval gas which emerged from the Big Bang to form all the stars and galaxies we can see today.



Since 1997 the astronomers, with their Australian colleagues, have been using two giant radio telescopes, the 64-metre diameter dish at Parkes in New South Wales, Australia, and the 76-metre dish at Jodrell Bank in Cheshire, England to build up an atlas of the heavens as mapped by cosmic hydrogen.

The survey is fundamental for two entirely different reasons. First of all the night sky, in cosmic terms, is quite bright so that structures dimmer than the sky will be invisible to optical telescopes - but not to the radio. Thus parts of the ’Invisible Universe’ should come to light for the first time - and they do.


Secondly, finding the gas left behind when the galaxies formed should help decode the evolution of the Universe as it expands. For instance the team finds, for the very first time, infantile galaxies still apparently commingling out of pristine gas.

So many exciting and surprising discoveries are emerging from the survey that Professor Mike Disney and his team find themselves constantly dashing around the globe to follow them up with other telescopes in Australia, New Mexico, Holland, Chile, the Canaries and South Africa, to say nothing of the Hubble Space Telescope.

"We are racing against time, against man-made radio-interference which will soon blind us to much of the cosmos for ever," said Professor Disney.

"We feel very privileged," he added. "We are like the early navigators glimpsing new continents for the first time. There are surprises and inevitably we only understand a fraction of what we encounter. The real challenge is to distinguish what is actually there from what we wanted to find. But none amongst us would wish to be anywhere else."

Members of Professor Disney’s team include Hugh Lang (engineer), Dr Robert Minchin and Dr Erwin de Blok, Diege Garcia and Marco Grossi (PhD students) and Thomas Targett (undergraduate student).

Dr Robert Minchin | EurekAlert!
Further information:
http://www.cardiff.ac.uk/

More articles from Physics and Astronomy:

nachricht Scientific achievements during the operation of Lomonosov satellite
18.12.2017 | Lomonosov Moscow State University

nachricht Quantum memory with record-breaking capacity based on laser-cooled atoms
18.12.2017 | Faculty of Physics University of Warsaw

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Error-free into the Quantum Computer Age

A study carried out by an international team of researchers and published in the journal Physical Review X shows that ion-trap technologies available today are suitable for building large-scale quantum computers. The scientists introduce trapped-ion quantum error correction protocols that detect and correct processing errors.

In order to reach their full potential, today’s quantum computer prototypes have to meet specific criteria: First, they have to be made bigger, which means...

Im Focus: Search for planets with Carmenes successful

German and Spanish researchers plan, build and use modern spectrograph

Since 2016, German and Spanish researchers, among them scientists from the University of Göttingen, have been hunting for exoplanets with the “Carmenes”...

Im Focus: First-of-its-kind chemical oscillator offers new level of molecular control

DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.

Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

The body's street sweepers

18.12.2017 | Life Sciences

Fast flowing heat in layered material heterostructures

18.12.2017 | Materials Sciences

Life on the edge prepares plants for climate change

18.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>