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Research Highlights

Published: Mon, 08/07/2017 - 12:00pm

The Sun isn’t working the way we thought it did. Many astrophysicists haven't actually understood one aspect of how the Sun worked––until former senior research associate Nick Featherstone and senior research associate Brad Hindman set the record straight.

Stars like the Sun have to get rid of the heat generated by thermonuclear reactions in their centers. The Sun’s secret is vigorous convection, particularly in the outer third of the Sun closest to its surface. Like a pot of boiling water, hot fluid moves upward and cooler fluid moves downward, carrying heat outwards toward the surface of the star. For a long time, astrophysicists thought these motions came in two different sizes called granules (because these megameter-sized structures looked like grains of rice through early telescopes) and giant cells.

The trouble with the giant cell idea is that while granules appear on the Sun’s surface, giant cells have never been seen in spite of the fact astronomers have been looking for them for a long time. And, if giant cells exist, they would be 200 megameters1 wide, which is...

Published: Jul 27, 2016

Fellow Phil Armitage and group collaborator Jacob Simon of the Southwest Research Institute are...

Published: Jul 21, 2016

The Raschke group has created an ultrafast optical nanoscope based on a unique way of “nano”...

Published: Jul 20, 2016

Bob Peterson and his colleagues in the Lehnert-Regal lab recently set out to try something that...

Published: Jun 28, 2016

Fellow Judah Levine recently presented a discussion of our understanding of time from antiquity...

Published: Jun 02, 2016

The Kapteyn/Murnane group has measured how long it takes an electron born into an excited state...

Published: May 04, 2016

The Ye group just solved a major problem for using...

Published: Apr 21, 2016

Move over, single-atom laser cooling! The Holland theory group has just come up with a stunning...

Published: Apr 20, 2016

The old JILA molecule factory (built in 2002) produced the world’s first ultracold polar...

Published: Mar 31, 2016

The Ye and Rey groups have discovered the strange rules of quantum baseball in which strontium (...

Published: Feb 10, 2016

Cong Chen and his colleagues in the Kapteyn/Murnane group have generated one of the most complex...

Published: Jan 28, 2016

The Rey and Ye groups are in the midst of an extended collaboration on using the Ye group’s...

Published: Dec 08, 2015

In 2008, Fellow Jeff Linsky and his colleague Seth Redfield of Wesleyan University used spectral...

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