Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

South Pole telescope follows trail of neutrinos into deepest reaches of the universe

28.01.2003


Researchers can now pinpoint direction of elusive subatomic particles key to understanding black holes, other cosmic events


Photo credit: The University of Wisconsin



A unique telescope buried in Antarctic ice promises unparalleled insight into such extraordinary phenomena as colliding black holes, gamma-ray bursts, the violent cores of distant galaxies and the wreckage of exploded stars.

An international team of physicists and astronomers, which includes UC Irvine researchers, report that the AMANDA telescope is capable of tracking high-energy neutrinos — elusive subatomic particles — to their sources, which are emitted by these signature events. Their findings will be published in the Feb. 1. 2003, issue of the Astrophysical Journal.


"We now have a powerful new tool to scan the heavens," said Steven Barwick, a UCI physicist and corresponding author on the report. "This marks a significant breakthrough in the field of high-energy neutrino astronomy. AMANDA does what it was designed to do. Of all the high-energy particles emitted from the violent, energetic events in the universe, only neutrinos can directly provide information on these activities."

Neutrinos are invisible, uncharged, nearly massless particles that, unlike other kinds of radiation, speed through the universe unhindered by planets, stars, magnetic fields or entire galaxies. The particles are emitted by phenomena scientists believe can help them understand the origins of the universe.

Using the AMANDA detector — a massive, 400-meter tall structure consisting of 308 optical sensors each the size of a bowling ball — the physicists examined a previously unexplored region of the sky. They calculated that AMANDA could measure the direction of neutrinos within 3.5 degrees, which is accurate enough to reveal sources of high-energy neutrinos. They also determined that an improved version of the detector, AMANDA-II, which has been operational since January 2000, can provide as much as 10 times more information on the emission sources of these neutrinos.

First operational in 1997, the Antarctic Muon and Neutrino Detector Array (AMANDA) facility was established to study the high-energy form of neutrinos, which has 10,000 times more energy than that of low-energy neutrinos emitted by the sun. Buried more than one-and-a-half kilometers beneath the South Pole, the National Science Foundation-funded AMANDA telescope is pointed into the ground instead of up at the sky, so the Earth can act as a filter for other forms of radiation. This means despite its location in the South Pole, the "eye" of the telescope is actually the northern skies.

Along with Barwick, other UCI researchers contributing to the AMANDA project are Lisa Gerhardt, Kyler Kuehn, John Kim, Pat Mock, David Ross, Wenqing Wu, Gaurang Yodh and Scott Young. Overall, 105 scientists from 20 universities and institutes in the United States, Europe and South America collaborate on AMANDA research. Their work is supported by a variety of international sources, including the U.S. National Science Foundation, the U.S. Department of Energy, and the UCI AENEAS Supercomputer Facility.

Tom Vasich
(949) 824-6455
tmvasich@uci.edu

Tom Vasich | UCI
Further information:
http://amanda.uci.edu/
http://today.uci.edu/news/release_detail.asp?key=970

More articles from Physics and Astronomy:

nachricht Astronomers release most complete ultraviolet-light survey of nearby galaxies
18.05.2018 | NASA/Goddard Space Flight Center

nachricht A quantum entanglement between two physically separated ultra-cold atomic clouds
17.05.2018 | University of the Basque Country

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: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

Im Focus: Dozens of binaries from Milky Way's globular clusters could be detectable by LISA

Next-generation gravitational wave detector in space will complement LIGO on Earth

The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...

Im Focus: Entangled atoms shine in unison

A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.

The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...

Im Focus: Computer-Designed Customized Regenerative Heart Valves

Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.

Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...

Im Focus: Light-induced superconductivity under high pressure

A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.

Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

 
Latest News

Supersonic waves may help electronics beat the heat

18.05.2018 | Power and Electrical Engineering

Keeping a Close Eye on Ice Loss

18.05.2018 | Information Technology

CrowdWater: An App for Flood Research

18.05.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>