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Latest Very Long Baseline Interferometry Stories

Quasar Revealed In Unprecedented Detail
2012-07-18 05:13:54

[ Watch Video 1 ] | [ Watch Video 2 ] | Watch Video 3 ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers have made a crucial step towards a scientific goal by observing the heart of a distant quasar with angular resolution. An international team of astronomers connected radio telescopes in Chile, Hawaii and Arizona for the first time using the technique of Very Long Baseline Interferometry (VLBI), enabling them to make the sharpest observation ever of the center of a...

Focused Alien Hunt Coming Up Empty Thus Far
2012-06-04 03:15:31

A technique that allows radio astronomers to combine observations made simultaneously by multiple arrays has yet to detect any signs of extraterrestrial broadcast signals, Australian researchers have confirmed. In a study posted online May 29 and scheduled for publication in the Astronomical Journal, experts at the Curtin University International Centre for Radio Astronomy Research used very long baseline interferometry (VLBI) to examine Gliese 581, a star which is orbited by planets...

Image 1 - NASA Pinning Down 'Here' Better Than Ever
2012-02-25 05:16:20

Before our Global Positioning System (GPS) navigation devices can tell us where we are, the satellites that make up the GPS need to know exactly where they are. For that, they rely on a network of sites that serve as "you are here" signs planted throughout the world. The catch is, the sites don't sit still because they're on a planet that isn't at rest, yet modern measurements require more and more accuracy in pinpointing where "here" is. To meet this need, NASA is helping to lead an...

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2011-03-02 13:39:54

Using a perfectly orchestrated world-wide network of radio telescopes, astronomers have produced a high-resolution map of an Active Galactic Nucleus (AGN) belonging to an unknown class of gamma-ray sources. The unusual source and the groundbreaking technique used to produce the image are detailed in a letter published today in Astronomy & Astrophysics. The paper, "Global e-VLBI observations of the gamma-ray narrow line Seyfert 1 PMN J0948+0022" (abstract, full html, PDF), presents very...

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2010-07-31 07:04:57

Don Backer, a professor in the Department of Astronomy at the University of California, Berkeley, and a world leader in the field of radio astronomy, died on Sunday, July 25, after collapsing outside his home. He was 66. Backer joined the UC Berkeley Astronomy Department in 1975; since 1989, he held a position both as a full professor in astronomy and as a researcher in the department's Radio Astronomy Laboratory (RAL). He served as chair of the department from 1998-1999 and from 2002-2008,...

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2010-01-27 15:00:21

An international team of scientists, including several astronomers from the Joint Institute for VLBI in Europe (JIVE) and the Netherlands Institute for Radio Astronomy (ASTRON), both located in Dwingeloo, have observed a supernova with peculiar radio emission. In a paper to be published in the January 28, 2010 issue of Nature, the team led by JIVE's Zsolt Paragi reports, for the first time ever, detection of a relativistic outflow in a Type Ic supernova, thus supporting the link with the even...

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2009-10-29 13:05:00

Many of us have been rescued from unfamiliar territory by directions from a Global Positioning System (GPS) navigator. GPS satellites send signals to a receiver in your GPS navigator, which calculates your position based on the location of the satellites and your distance from them. The distance is determined by how long it took the signals from various satellites to reach your receiver. The system works well, and millions rely on it every day, but what tells the GPS satellites where they are...

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2009-02-05 06:30:00

The presence of water has long been seen as a key condition for life in planetary environments. Prompted by recent discovery by the NASA's Cassini spacecraft of a water vapor "plume" emanating from Enceladus, one of the Saturnian satellites, radio astronomers wondered how abundant water is in the system of Saturn. The so-called maser emission of water molecules offers the most sensitive and robust way of detecting water vapor at radio wavelengths. This emission is unmistakably recognizable...

2008-06-29 06:01:04

By Luntz, Stephen Australian astronomers have successfully bid for a 10 Gb/s data link across the US. The link will be used to demonstrate the practicality of moving the enormous amounts of data produced by major telescopes over large distances. "This wilt be important for demonstrating techniques that will be used for the international Square Kilometre Array radio telescope (AS, April 2008, pp.20-22)," said Prof Brian Boyle, Director of CSIRO's Australia Telescope National Facility. The...

2008-06-24 02:29:15

Australian astronomers working in China say they've remotely controlled telescopes in three nations and streamed the data to a New South Wales observatory. We're now in the age of astronomy without borders, said Tasso Tzioumis of Australia's Commonwealth Scientific and Industrial Research Organization's Australia Telescope National Facility. Tzioumis and colleagues Chris Phillips and Shaun Amy worked with Chinese and Japanese astronomers to control the 25-meter radio telescope of the...


Latest Very Long Baseline Interferometry Reference Libraries

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2004-10-19 04:45:43

Radio Astronomy -- Radio astronomy is the study of celestial phenomena through measurement of the characteristics of radio waves emitted by physical processes occurring in space. Radio waves are much longer than light waves. In order to receive good signals, radio astronomy requires large antennas. Radio astronomy is a relatively new field of astronomical research. The earliest investigations into extraterrestrial sources of radio waves were by Karl Guthe Jansky, an engineer with Bell...

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