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Greg Landsberg: Seeking the Higgs boson

By Guest PostJune 29, 2012Scienceamerican group, brown, CERN, cms, compact muon solenoid, data, david cutts, david orenstein, electromagnetic interaction, electroweak force, electroweak symmetry breaking, fermilab, gerald guralnik, greg landsberg, higgs, higgs boson, higgs field, higgs mechanism, higgs signal, high precision, lack of sleep, Large Hadron Collider, meenakshi narain, megapixel camera, particle, phenomenon, photon, professor of physics, skype, standard model, statistical significance, switzerland, ultich heintz, universe, z bosons

Greg Landsberg, professor of physics at Brown, is the physics coordinator for the Compact Muon Solenoid (CMS) at CERN in Switzerland, part of a Brown team that includes professors David Cutts, Ultich Heintz, and Meenakshi Narain. The giant instrument’s primary mission is finding the Higgs boson, a particle whose existence would confirm the best guess physicists have made about why things have mass.

On July 4, Landsberg and his colleagues will reveal the latest results of their search. Anything could happen when Greg Landsberg and, including an announcement that the Higgs has been found or that it has been ruled out, sending theorists back to the whiteboard. Landsberg spoke by Skype with science news officer David Orenstein on June 26 as CERN physicists were preparing for their press conference. (more…)

Prometheus

By Guest PostJune 11, 2012Entertainmentcharlize theron, darkest corners, earth, human race, michael fassbender, noomi rapace, origin of mankind, prometheus, prometheus 3d, sci fi, thrilling journey, universe, yahoo movies

Synopsis

A team of explorers discover a clue to the origins of mankind on Earth, leading them on a thrilling journey to the darkest corners of the universe. There, they must fight a terrifying battle to save the future of the human race. (more…)

NASA’s Spitzer Finds First Objects Burned Furiously

By Guest PostJune 9, 2012Sciencealexander sasha kashlinsky, ancient era, big bang, cosmic fuel, cosmic infrared background, expansion, faint objects, first objects, giovanni fazio, glenn wahlgren, harvey moseley, infrared wavelengths, james webb, john mather, los angeles, massive stars, matt ashby, mysterious sources, NASA, nearby universe, new york city, pattern of light, richard arendt, sky, space telescope, spitzer space telescope, ultraviolet wavelengths, universe, voracious black holes

PASADENA, Calif. — The faint, lumpy glow given off by the very first objects in the universe may have been detected with the best precision yet, using NASA’s Spitzer Space Telescope. These faint objects might be wildly massive stars or voracious black holes. They are too far away to be seen individually, but Spitzer has captured new, convincing evidence of what appears to be the collective pattern of their infrared light.

The observations help confirm the first objects were numerous in quantity and furiously burned cosmic fuel.

“These objects would have been tremendously bright,” said Alexander “Sasha” Kashlinsky of NASA’s Goddard Space Flight Center in Greenbelt, Md., lead author of a new paper appearing in The Astrophysical Journal. “We can’t yet directly rule out mysterious sources for this light that could be coming from our nearby universe, but it is now becoming increasingly likely that we are catching a glimpse of an ancient epoch. Spitzer is laying down a roadmap for NASA’s upcoming James Webb Telescope, which will tell us exactly what and where these first objects were.” (more…)

Cosmic Ray Mystery

By Guest PostApril 19, 2012Scienceactive galaxies, Antarctica, array of detector, australia, bakhtiyar ruzybayev, barbados, belgium, black hole, canada, charged particle, chris elliott, cosmic ray, cosmic ray protons, data, density of radiation, detector, earth, energy, fermi satellites, fireballs, francis halzen, gamma ray bursts, Germany, ghostly nature, glacial ice, grbs, greg sullivan, icecube, icetop, james roth, Japan, katie shirey, NASA, national science foundation, neutrinos, new zealand, nsf, production, proton, pyramid of giza, south pole, Sweden, swift, switzerland, telescope, thomas gaisser, universe, university of delaware, university of wisconsin, US

Massive detector homes in on cosmic ray production

IceCube, an international collaboration involving University of Delaware scientists, is shedding new light on cosmic ray production.

Although cosmic rays were discovered 100 years ago, their origin remains one of the most enduring mysteries in physics. Now, the IceCube Neutrino Observatory, a massive detector in Antarctica, is homing in on how the highest energy cosmic rays are produced. (more…)

Clocking an Accelerating Universe: First Results from BOSS

By Guest PostApril 4, 2012Scienceaccelerate, adam riess, apache point observatory, bao, baryon acoustic oscillation, berkeley lab, beth reid, big bang, brian schmidt, cmb, cosmic microwave background, dan long, dark energy, david schlegel, density peak, einstein, eric huff, euclidean universe, Galaxy, george smoot, gravitational attraction, gravity, high z supernova, hubble, martin white, megaparsecs, Milky Way, new mexico, nobel prize, phenomenon, redshifts, saul perlmutter, scp, sdss, sloan telescope, spectrograph, statistical analysis, universe, zosia rostomian

Berkeley Lab scientists are the leaders of BOSS, the Baryon Oscillation Spectroscopic Survey. They and their colleagues in the third Sloan Digital Sky Survey have announced the most precise measurements ever made of the era when dark energy turned on.

Some six billion light years distant, almost halfway from now back to the big bang, the universe was undergoing an elemental change. Held back until then by the mutual gravitational attraction of all the matter it contained, the universe had been expanding ever more slowly. Then, as matter spread out and its density decreased, dark energy took over and expansion began to accelerate.

Today BOSS, the Baryon Oscillation Spectroscopic Survey, the largest component of the third Sloan Digital Sky Survey (SDSS-III), announced the most accurate measurement yet of the distance scale of the universe during the era when dark energy turned on. (more…)

The First Spectroscopic Measurement of an Anti-Atom

By Guest PostMarch 11, 2012Scienceafrd, alpha collaboration, anti atoms trapped, antielectrons, antihydrogen, antihydrogen atom, antimatter, astronomy, atomic spectrum, berkeley lab, CERN, charge conjugation, cosmic rays, cpt, electric interaction, electron, emission line, geneva, hydrogen, hydrogen atom, hyperfine splitting, joel fajans, jonathan wurtele, magnetic, magnetic fields, magnetic trap, microwaves, parity, positrons, proton nucleus, quantum state, resonant frequency, simone straka, spectroscopic measurements, spin, symmetrical state, time reversal, trapped hydrogen, universe

*Berkeley Lab scientists helped build and operate the ALPHA antimatter trap at CERN, which has now probed the internal structure of the antihydrogen atom for the first time, taking the first step toward possible new insights into the difference between matter and antimatter*

The ALPHA collaboration at CERN in Geneva has scored another coup on the antimatter front by performing the first-ever spectroscopic measurements of the internal state of the antihydrogen atom. Their results are reported in a forthcoming issue of Nature and are now online.

Ordinary hydrogen atoms are the most plentiful in the universe, and also the simplest – so simple, in fact, that some of the most fundamental physical constants have been discovered by measuring the tiny energy shifts resulting from the magnetic and electric interactions of hydrogen’s proton nucleus with its single orbiting electron. (more…)

Planck All-Sky Images Show Cold Gas and Strange Haze

By Guest PostFebruary 14, 2012Sciencebig bang, carbon monoxide, clouds of hydrogen, cold clouds, cold gas, cosmic microwave background, dark matter, dark matter particles, davide pietrobon, electrons, european space agency, form of light energy, galactic haze, galactic winds, Galaxy, greg dobler, haze, images, jan tauber, krzysztof m gorski, magnetic fields, microwave emissions, milky way galaxy, NASA, planck, planck data, poland, relic radiation, santa barbara, star formation, supernovae, the whole sky, universe, university of california, warsaw university observatory, wavelengths, wmap

New images from the Planck mission show previously undiscovered islands of star formation and a mysterious haze of microwave emissions in our Milky Way galaxy. The views give scientists new treasures to mine and take them closer to understanding the secrets of our galaxy.

Planck is a European Space Agency mission with significant NASA participation. (more…)

A Galactic Magnetic Field in A Lab Bolsters Astrophysical Theory

By Guest PostFebruary 2, 2012Scienceastrophysics, asymmetrical shockwave, biermann battery process, biermann process, charged particle, clouds of gas, electric current, french laboratory, Galaxy, german astronomer, high energy pulsed lasers, intergalactic medium, magnetic field, motion, oxford university, particle gas, paul drake, plasma, theory, universe, university of michigan

ANN ARBOR, Mich.— Why is the universe magnetized? It’s a question scientists have been asking for decades. Now, an international team of researchers including a University of Michigan professor have demonstrated that it could have happened spontaneously, as the prevailing theory suggests.

The findings are published in the Jan. 26 edition of Nature. Oxford University scientists led the research. (more…)

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