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Posts Tagged ‘physics’

In Memoriam: Andrew Sessler, Former Laboratory Director, Acclaimed Physicist and Humanitarian

April 18, 2014

Andrew Sessler, former Laboratory Director and Acclaimed Physicist and Humanitarian, has died.

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BOSS Quasars Track the Expanding Universe – the Most Precise Measurement Yet

April 7, 2014

The Baryon Oscillation Spectroscopic Survey (BOSS) pioneered the use of quasars to chart the universe’s expansion and investigate the properties of dark energy through studies of large-scale structure. New techniques of analysis led by Berkeley Lab scientists, combined with other new BOSS quasar measures of the young universe’s structure, have produced the most precise measurement of expansion since galaxies formed.

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Setting a Trap for Gravity Waves

March 18, 2014

In 1996 Uros Seljak was a postdoc at Harvard, contemplating ways to extract information from the cosmic microwave background (CMB). The distribution of anisotropies, slight temperature differences, in the CMB had much to say about the large-scale structure of the universe. If it were also possible to detect the polarization of the CMB itself, however, [...]

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Standard-Candle Supernovae are Still Standard, but Why?

March 3, 2014

Until recently, scientists thought they knew why Type Ia supernovae – the best cosmological “standard candles” – are all so much alike. But their favorite scenario was wrong. White dwarfs don’t all reach the Chandrasekhar limit, 1.4 times the mass of our sun, before they detonate in a massive thermonuclear explosion. Most Type Ia progenitors are less massive, and a few are even more massive. New work by the Berkeley Lab-based Nearby Supernova Factory can identify which theories of the strange circumstances that lead to a Type Ia explosion actually work and which don’t.

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Heavy Flavor Tracker for STAR

February 18, 2014

Studies of the quark-gluon plasma – the primordial soup of quarks and gluons whose brief existence after the big bang set the stage for the universe we know today – is poised for a major upgrade thanks to a new particle detector system called the “Heavy Flavor Tracker.”

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Andrew Sessler Wins Fermi Award

January 14, 2014

President Obama has named Andrew Sessler, award-winning theoretical physicist, acclaimed humanitarian, and former director of Berkeley Lab, as a recipient of the Enrico Fermi Award, the government’s oldest and most prestigious prizes for scientific achievement.
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BOSS Measures the Universe to One-Percent Accuracy

January 8, 2014

The Baryon Oscillation Spectroscopic Survey (BOSS), the largest component of the third Sloan Digital Sky Survey, has measured the clustering of nearly 1.3 million galaxies spectroscopically to determine the “standard ruler” of the universe’s large-scale structure to within one percent. This is the most precise such measurement ever made and is likely to establish the standard for years to come.

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Carolyn Bertozzi and George Smoot Elected to National Academy of Inventors

December 10, 2013

Carolyn Bertozzi and George Smoot are among 143 new Fellows of the fledgling National Academy of Inventors. The honor, for which they were nominated by their peers, is based on their history of outstanding inventions and discoveries.

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Latest from ATLAS: Higgs Boson Behaves Just the Way it Should

December 4, 2013

At a CERN seminar November 26th, Aliaksandr (Sasha) Pranko of the Physics Division at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) presented key direct evidence that the “Higgs-like” particle discovered at CERN last year does what a Higgs is supposed to do: it couples not only to other bosons but to [...]

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First Results from LUX, the World’s Most Sensitive Dark Matter Detector

October 30, 2013

The LUX dark matter experiment at the Sanford Underground Research Facility has announced its first results in the search for weakly interacting massive particles (WIMPs). Following an initial three-month run, LUX has demonstrated that it has a sensitivity limit three times better than any previous dark matter search, establishing new bounds on possible properties of WIMPs.

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