A novel telescope that uses the Antarctic ice sheet as its window to the cosmos has produced the first map of the high-energy neutrino sky.
Scientists with the National Science Foundation-funded AMANDA Telescope project work at this South Pole research station. Their neutrino detectors are sunk more than one-and-a-half kilometers beneath the ice.
Photo by: Robert Morse
The first map of the high-energy neutrino sky, produced with data from the AMANDA II Telescope at the South Pole provides a tantalizing glimpse of many potential point sources of the ghostlike cosmic neutrino. The preliminary map, unveiled July 15, 2003 at a meeting of the International Astronomical Union in Sydney, Australia, represents an analysis of one year of data from the telescope and may encompass the first evidence of a cosmic accelerator — bizarre, highly energetic phenomena such as crashing black holes — but proof will require analysis of at least two more years of data.
Photo by: courtesy AMANDA Project
The map, unveiled for astronomers here today (July 15) at a meeting of the International Astronomical Union, provides astronomers with their first tantalizing glimpse of very high-energy neutrinos, ghostly particles that are believed to emanate from some of the most violent events in the universe - crashing black holes, gamma ray bursts, and the violent cores of distant galaxies.
"This is the first data with a neutrino telescope with realistic discovery potential," says Francis Halzen, a University of Wisconsin-Madison professor of physics, of the map compiled using AMANDA II, a one-of-a-kind telescope built with support from the National Science Foundation (NSF) and composed of arrays of light-gathering detectors buried in ice 1.5 kilometers beneath the South Pole. "To date, this is the most sensitive way ever to look at the high-energy neutrino sky," he says.
Francis Halzen | EurekAlert!
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Friction stir welding is a still-young and thus often unfamiliar pressure welding process for joining flat components and semi-finished components made of light metals.
Scientists at the University of Stuttgart have now developed two new process variants that will considerably expand the areas of application for friction stir welding.
Technologie-Lizenz-Büro (TLB) GmbH supports the University of Stuttgart in patenting and marketing its innovations.
Friction stir welding is a still-young and thus often unfamiliar pressure welding process for joining flat components and semi-finished components made of...
Optical quantum computers can revolutionize computer technology. A team of researchers led by scientists from Münster University and KIT now succeeded in putting a quantum optical experimental set-up onto a chip. In doing so, they have met one of the requirements for making it possible to use photonic circuits for optical quantum computers.
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The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has been developing various applications for OLED microdisplays based on organic semiconductors. By integrating the capabilities of an image sensor directly into the microdisplay, eye movements can be recorded by the smart glasses and utilized for guidance and control functions, as one example. The new design will be debuted at Augmented World Expo Europe (AWE) in Berlin at Booth B25, October 18th – 19th.
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