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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 21, 2017

The Perkins group has made dramatic advances in the use of Atomic Force Microscopes (AFMs) to...

Published: Jul 10, 2017

Getting lasers to have a precise single frequency (color) can be trickier than herding cats. So...

Published: Jun 20, 2017

The Kapteyn-Murnane group has come up with a novel way to use fast bursts of extreme ultraviolet...

Published: May 22, 2017

JILA and NIST scientists are hot on the trail of understanding quantum correlations (or...

Published: Apr 21, 2017

The Regal group recently met the challenge of measurements in an extreme situation with a device...

Published: Mar 30, 2017

The first results are in from a new search for the axion, a hypothetical particle that may...

Published: Mar 20, 2017

Dennis Gardner and his coworkers in the Kapteyn-Murnane group accomplished two major...

Published: Mar 03, 2017

The lovely Crab Nebula was created by a supernova and its spinning-neutron-star remnant known as...

Published: Mar 02, 2017

The Perkins group continues to extend the performance of its unique Atomic Force Microscope (AFM...

Published: Dec 21, 2016

Research associate Shimon Kolkowitz and his colleagues in the Ye group and Rey theory group have...

Published: Dec 19, 2016

Deborah Jin, Jun Ye, and their students wrote a review during the summer of 2016 for Nature...

Published: Dec 13, 2016

Astrophysicist Jeff Linsky and his colleagues recently created a sophisticated mathematical...

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