On March 13, it was announced the most vigorous bursts of star birth in the cosmos took place much earlier than previously thought - results now published in a set of papers in Nature and the Astrophysical Journal.
As these findings are published, three of the scientists at the forefront of this research - including the lead researcher of the latest findings – offered their insights about what this reveals about the history of our universe, and how the Atacama Large Millimeter/submillimeter Array (ALMA) is providing a "zoom lens" into the early universe.
This includes their surprise at finding so many star-producing "dusty galaxies" at such a young time in the universe's development. "They were not in line with what you would expect from the well known population of radio sources," said John Carlstrom, Deputy Director of the Kavli Institute for Cosmological Physics at the University of Chicago and leader of the 10-meter South Pole Telescope project. "This was the first clue we were onto something interesting. ...It meant that they had escaped detection in the infrared surveys. No one had predicted that we would see such a luminous population of dusty galaxies so far back."
Dan P. Marrone, Assistant Professor in the Department of Astronomy at the University of Arizona, also noted the results were possible even though ALMA itself is still incomplete. "With little more than a dozen antennas at ALMA, we were able to make very detailed images of these galaxies - and that was after just two minutes of observations per galaxy." He added, "When ALMA is completed, the observations we obtained for this first study are just going to be trivial."
Joaquin D. Vieira a member of the California Institute of Technology's Observational Cosmology Group, as well as leader of the group studying the galaxies discovered by the South Pole Telescope, looked forward. "[Now] we can dig deeper into the spectra of these galaxies to find out what they're made of; we can do chemistry with them," he said. "Future studies also will help us answer other important questions, such as how they formed. Did they form through mergers, or through the slow accretion of gas? How many stellar generations reside in these galaxies?"Read more at:
James Cohen | EurekAlert!
Further Improvement of Qubit Lifetime for Quantum Computers
09.12.2016 | Forschungszentrum Jülich
Electron highway inside crystal
09.12.2016 | Julius-Maximilians-Universität Würzburg
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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