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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: Apr 29, 2005

What really happens inside black holes?

Andrew Hamilton and Scott Pollack, a...

Published: Apr 17, 2005

Markus Greiner, Cindy Regal, Jayson Stewart, and Debbie Jin have found the first-ever visual...

Published: Apr 10, 2005

Jason Jones, Kevin Moll, Mike Thorpe, and Jun Ye have generated the world's first precise...

Published: Apr 10, 2005

Andrew Hamilton and Jason Lisle, who received his Ph.D. in astrophysical and planetary...

Published: Apr 03, 2005

A high-powered JILA collaboration led by JILA Fellows Jun Ye and Chris Greene is making...

Published: Apr 03, 2005

Three years ago Jun Ye decided to apply an old idea for amplifying and stabilizing continuous-...

Published: Mar 31, 2005

Pete Roos, Tara Fortier, Xiaoqin Li, Ryan Smith, Jessica Pipis, and Steve Cundiff are using a...

Left to their own devices, deuterium atoms would attach themselves to cold specks of soot...

The race is on! Two mice chase one another around a curvy, roughly elliptical white stripe....

Triatomic hydrogen ion (H3+) has many talents. In interstellar clouds,...

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