|
|
|
|
|
| |
|
|
|
| |
|
| News Summary, which is a summary in English of "Chalmers Nyheter", is published by Chalmers Public Relations and Press Office. |
Editor
Sofie Hebrand
Email
|
|
 |
Press releases |
A technological breakthrough for radio astronomy
Astronomical observations via high-speed data link
[040123]
To carry out simultaneuos observations with several telescopes and transform the combined data into pictures from distant galaxies has so far been a cumbersome procedure which often has taken a long time.
Now a breakthrough has been achieved by way of the installation of optical fibre links between the observatories and the universities who have access to the national and international research networks.
On Thursday 15 January 2004, the first e-VLBI experiment took place between Onsala Space Observatory and radio telescopes in Westerbork,
Holland, and Cambridge, England. Data from all three telescopes were sent via gigabit networks to the correlator in Holland (Joint Institute for VLBI in Europe, JIVE), and already the next day an image
was produced of the distant galactic nucleus one had observed. The participants in the experiment agree that this technical development will revolutionize the whole research area.
Thanks to the new optical fibre link between Onsala and Chalmers, which was installed at the end of 2003, Onsala Space Observatory is one of the first observatories in Europe to be able to participate in
this kind of observations.
Onsala Space Observatory has taken part in joint interferometrical experiments with radio telescopes in other countries since the end of the 1960żs, in order to achieve far better spatial resolution than what a single telescope can achieve.
Due to the long distances between the telescopes, up tintercontinental baselines, this technique is known as Very Long Baseline Interferometry (VLBI).
As the first European observatory Onsala already in 1968 performed a transatlantic VLBI experiment between the Onsala site and radio telescopes in USA.
The long distances make it impossible to bring together the signals from each station via cables at the correlator, the instrument which calculates the results of the combined observations. Traditionally
data have been recorded on magnetic tapes, which in turn were shipped to the correlator. This often implied long delays between the observing run itself and evaluation of the data.
The extensions and upgrades of the national and international research networks, which happened during the last couple of years, has made the transfer of data in real time (e-VLBI) from the telescopes to the correlator possible. One problem, though, has been that the connection via gigabit links only had taken place at universities and research institutes situated in big cities, and in general didn't reach the astronomical observatories in their often remote locations.
In co-operation with SUNET (Swedish University Network) Onsala Space Observatory last year installed an optical fibre link between the
observatory and Chalmers University of Technology, and thereby now has fast access to both SUNET and the other European networks.
The new e-VLBI technique is expected to replace the magnetic tapes in the years to come and enable experiments with a considerably increased
reliability and a quicker production of results. At the same time this is one of a few scientific applications which really will make use of all the research networks installed lately at high cost.
|
|
Building body parts using nanocellulose
As the first group in the world, researchers from Chalmers will build up body parts using nanocellulose and the body's own cells. Funding will be from..
>>
|
Breakthrough for the super material graphene
The hyper-quick electronics of the future will require new materials and the hottest around is graphene - a single layer of carbon atoms. Graphene pro..
>>
|
Hans-Olov Olsson new chairman of the Chalmers University Board
On January 1, 2010, Hans-Olov Olsson will take over as chairman of the Board of Chalmers tekniska högskola AB. Hans-Olov Olsson, 68, has long experien..
>>
|
Interactive web model shows how energy systems and climate are linked
A new web-based tool is presented by researchers from Chalmers in connection to the UN Climate summit in Copenhagen. The tool is interactive and allow..
>>
|
In search of the leading researchers of the future
Chalmers University of Technology is stepping up its efforts to develop its areas of advance into international meeting points for academia, industry ..
>>
|
New nanomethod paves the way for new measuring technology and hypersensitive sensors
Researchers at Chalmers University of Technology in Sweden have developed a new measurement technology that makes use of optical resonances in nanopar..
>>
|
Two million SEK donation opens the door for Thai students
A donation of two million SEK from the entrepreneur Sievert Larsson is giving young people from Thailand the chance to study for a Masters at Chalmers..
>>
|
More powerful Internet access on airplanes and trains
For the first time, researchers at Chalmers University of Technology in Gothenburg, Sweden, and Fraunhofer Heinrich Hertz Institute in Berlin/Technica..
>>
|
International conference on driver distraction and inattention in Göteborg
On September 28-29, the vehicle and traffic safety centre SAFER at Chalmers and the French National Institute for Transport and Safety Research, INRET..
>>
|
Top researcher at Chalmers gets large grant from the European Research Council
Christian Forssén, Assistant Professor in Subatomic Physics, is one of five Swedish top researchers that receive the new "Starting Independent Re..
>>
|
Increased safety and availability of nuclear power plants with on-line sensor surveillance
The error-free functioning of sensors used for the surveillance and monitoring of nuclear power plants is an important safety issue. The traditional w..
>>
|
Tomorrow's cities designed in Gothenburg
The cities of the future must be designed to meet the great challenges of climate change, environmental destruction and many resource allocation issue..
>>
|
Better hearing with bone conducted sound
New technology to hear vibrations through the skull bone has been developed at Chalmers University of Technology. Besides investigating the function o..
>>
|
Government strategic research funding a major show of confidence in Chalmers
Following an announcement by the Swedish government of its plans to invest SEK 1.3 billion in strategically important research, universities and colle..
>>
|
Advanced image analysis can provide better risk assessment in hardening of the arteries
Ultrasound examination of the carotid artery is a patient-friendly and inexpensive method for assessing atherosclerosis and thereby predicting the ris..
>>
|
|
