FacebookTwitterYouTube RSS Feed

News & Highlights

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: Dec 10, 2014

Until recently, researchers who wanted to understand how magnetic materials work had to reserve...

Published: Oct 31, 2014

New theory describing the spin behavior of ultracold polar molecules is opening the door to...

Published: Oct 14, 2014

Dynamical phase transitions in the quantum world are wildly noisy and chaotic. They don’t look...

Published: Aug 25, 2014

A Be star is a luminous, blue B-type star with distinctive spectral lines that can provide two...

Published: Aug 18, 2014

Symmetries described by SU(N) group theory made it possible for physicists in the 1950s to...

Published: Aug 01, 2014

The Raschke group recently came up with a clever way to detect folds and grain boundaries in...

Published: Jul 13, 2014

The spooky quantum property of entanglement is set to become a powerful tool in precision...

Published: Jun 26, 2014

Graduate student Adam Kaufman and his colleagues in the Regal and Rey groups have demonstrated a...

Published: Jun 22, 2014

The Ye group has not only made two invisible rulers of extreme ultraviolet (XUV) light, but also...

Published: Jun 13, 2014

Imagine a network of multiple clocks orbiting the Earth, not only reporting down to us, but also...

Published: May 27, 2014

Mid-infrared (mid-IR) laser light is accomplishing some remarkable things at JILA. This...

Published: May 22, 2014

Biomolecules may not always behave the same way in test tubes as they do in living cells, a fact...

Pages