David Spergel

Type: Person
Name: David Spergel
First reported Apr 15 2014 - Updated Apr 15 2014 - 1 reports

Star dust casts doubt on recent big bang wave result

An imprint left on ancient cosmic light that was attributed to ripples in spacetime – and hailed by some as the discovery of the century – may have been caused by ashes from an exploding star.In the most extreme scenario, the finding could suggest that ... [Published New Scientist - Apr 15 2014]
First reported Apr 15 2014 - Updated Apr 15 2014 - 1 reports

Scientists find echoes of Big Bang

The sun sets behind the BICEP2 telescope and the South Pole Ttelescope in Antarctica.In the beginning, the universe got very big very fast, transforming itself in a fraction of an instant from something almost infinitesimally small to something imponderably ... [Published WA Today - Apr 15 2014]
First reported Apr 10 2014 - Updated Apr 10 2014 - 1 reports

Have galactic 'radio loops' been mistaken for B-mode polarization?

"Radio loop" emissions, rather than signatures of the early universe, could account for the . That is the claim of a trio of cosmologists that has found evidence that local structures in our galaxy generate a polarized signal that was previously unknown ... [Published Physicsworld.com - Apr 10 2014]
First reported Mar 18 2014 - Updated Mar 19 2014 - 1 reports

Big Bang waves: Evidence of 14 billion-year-old event discovered at South Pole

A telescope at the South Pole detected Big Bang waves. The new evidence was discovered by the BICEP2 (Background Imaging of Cosmic Extragalactic Polarization 2) telescope. According to CNN on Mar. 18, this could indicate an event that occurred nearly ... [Published Examiner.com - Mar 18 2014]
First reported Mar 17 2014 - Updated Mar 18 2014 - 3 reports

Scientists Report Evidence for Gravitational Waves in Early Universe

In what would represent strong evidence of Albert Einstein’s last major unconfirmed prediction, as well as a powerful confirmation of a violently large expansion of the early universe, scientists using a cutting-edge South Pole telescope announced evidence ... [Published Inside Science News Service - Mar 17 2014]
First reported Feb 19 2014 - Updated Feb 19 2014 - 1 reports

'Missing' Galaxy Cluster Masses Shed Light On Mystery Of Big Bang's Echo

Soon after the Big Bang, there were tiny ripples: quantum fluctuations in the density of the seething ball of hot plasma. Billions of years later, those seeds have grown into galaxy clusters — sprawling groups of hundreds or thousands of galaxies bound ... [Published The Huffington Post | Full News Feed - Feb 19 2014]

Quotes

Spergel added, "we will soon know if this result is revolutionary or due to some poorly understood systematics."
...all agree that all eyes are now on the upcoming polarization data from the Planck satellite, which should clarify the situation within the year. "planck has polarization measurements across the whole sky at multiple frequencies, so it will provide both a detailed characterization of galactic emission and should hopefully also confirm the bicep2 results and show convincingly that the emission is cosmological" says Spergel
"i am looking forward to seeing these results confirmed or refuted by other experiments in the next year or two" Spergel said

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sort by: Date | Relevance
Star dust casts doubt on recent big bang wave r... [Published New Scientist - Apr 15 2014]
Scientists find echoes of Big Bang [Published WA Today - Apr 15 2014]
Have galactic 'radio loops' been mistaken for B... [Published Physicsworld.com - Apr 10 2014]
Big Bang waves: Evidence of 14 billion-year-old... [Published Examiner.com - Mar 18 2014]
Scientists Report Evidence for Gravitational Wa... [Published Inside Science News Service - Mar 17 2014]
A big-bang theory gets a big boost: Evidence th... [Published Washington Post - Mar 17 2014]
Big Bang breakthrough announced; gravity waves ... [Published CNN - Mar 17 2014]
'Missing' Galaxy Cluster Masses Shed Light On M... [Published The Huffington Post | Full News Feed - Feb 19 2014]
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