SLAC Today is
available online at:
http://today.slac.stanford.edu
In this issue:
First Gamma-ray-only Pulsar Observation Opens New Window on Stellar Evolution
A Special "Thank You" to Fred Kavli
LCLS/SSRL Users' Meeting Update
Lab
Sign Gets a New Look
Word of the Week: Muon
Friday - October 17, 2008 |
First Gamma-ray-only Pulsar Observation Opens New Window on Stellar EvolutionAbout three times a second, a 10,000-year-old stellar corpse sweeps a beam of gamma-rays toward Earth. This object, known as a pulsar, is the first one known to "blink" only in gamma rays, and was discovered by the Large Area Telescope onboard NASA's Fermi Gamma-ray Space Telescope, a collaboration with the U.S. Department of Energy and international partners. "This is the first example of a new class of pulsars that will give us fundamental insights into how stars work," says Stanford University's Peter Michelson, principal investigator for the Large Area Telescope. The LAT data are processed by the SLAC National Accelerator Laboratory and analyzed by the International LAT Collaboration. The gamma-ray-only pulsar lies within a supernova remnant known as CTA 1, about 4,600 light-years away in the constellation Cepheus. Its lighthouse-like beam sweeps Earth's way every 316.86 milliseconds and emits 1,000 times the energy of our sun. These results appear in the October 16 edition of Science Express. Read the full news release.... |
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A Special "Thank You" to Fred KavliFred Kavli paid a visit to the lab on Wednesday for a "thank you" celebration held in his honor. The afternoon program featured a panel of particle physicists and astrophysicists, who spoke to invitees about the contrast between theory and experiment in those fields. Kavli himself and members of the Kavli Institute for Particle Astrophysics and Cosmology also made brief remarks. In addition to the founding donation to create KIPAC, Fred Kavli and the Kavli Foundation made a generous donation earlier this spring that will create an endowment to fund two Kavli Fellows. (See "New Gift from Science Philanthropist to Benefit Students at KIPAC.") Those fellowship positions are set to begin in early 2009. "Establishing these fellowships is a wonderful opportunity for us," said KIPAC Director Roger Blandford. "We're so thrilled to have the opportunity to say 'thank you' in person to Fred, for his special generosity and the generosity of the Kavli Foundation." LCLS/SSRL Users' Meeting UpdateThe joint users' meeting of the lab's two key light sources is going strong this week. Science writer Brad Plummer discusses some of the highlights in his blog. |
Lab Sign Gets a New LookIn honor of the lab's new name, the sign at the lab's main entrance has a new look. Created by Facilities carpenters and painters, the wood-frame sign sports the new lab logo, and will mark the Sand Hill Road entry until a more permanent one is ready. Word of the Week:
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