SLAC Today is
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In this issue:
SLAC Joins ATLAS Collaboration
Science Today: What will the Universe Look Like as Seen by GLAST?
New Sculpture at Kavli Building
Thursday - July 20, 2006 |
SLAC Joins ATLAS CollaborationYou may have noticed the busy crowd at the SLAC Summer Institute this week. The theme of this year's summer institute is the Large Hadron Collider (LHC), a proton-proton collider under construction near Geneva, Switzerland. What you may not know is that SLAC is also officially participating in both the LHC accelerator and the experimental programs. On July 14, SLAC was officially accepted into the ATLAS collaboration, a consortium of researchers and institutions working on the ATLAS (A Toroidal LHC ApparatuS) detector at the LHC. Shortly thereafter, the laboratory was named a Tier 2 Computing Center for the collaboration. This makes it one of a few dozen institutions around the world that will support the computing effort for the experiment's data analysis and simulation. Read more... |
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What will the Universe Look Like as Seen by GLAST?Following its launch in late 2007, the Gamma-ray Large Area Space Telescope (GLAST) will explore the universe using gamma-rays, the most energetic form of light. These rays are more than a million times more energetic than the X-rays you get when you visit your dentist. In order to get ready for data analysis, the GLAST collaboration has recently performed a "Data Challenge," which produced 2 months of simulated gamma-ray sky to exercise and improve data analysis tools. See a movie of the results here. "The data challenges are a great start, but now we want to investigate details of individual sources that we might see," says Stefan Funk, who is working on predictions for supernova remnants, one of the classes of objects to be studied by GLAST. These objects are the aftermath of a supernova explosion in which a massive star blows itself apart. The force of the explosion generates a blinding flash of radiation, as well as shock waves analogous to sonic booms in which particles are thought to be accelerated to energies visible by GLAST. According to Funk, we know that "Supernovae are the most violent events in our universe, they strongly influence the evolution of our galaxy but still we do not really know how gamma-rays are produced in these objects." By comparing the detailed simulations to the GLAST gamma-ray data, scientists will be able to test our basic understanding of particle acceleration mechanisms in the galaxy. |
New Sculpture
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