HAO Research Highlights

chromospheric activity and rotation in field dwarfs and subgiants
July 1, 2016

The study of Sun-like stars helps us to put the Sun in context. HAO Newkirk Fellow Ricky Egeland has co-authored a new publication with Space Science Institute scientist Travis Metcalfe and Carnegie Fellow Jennifer van Saders.

May 24, 2016

The AAS Nova site is featured a recent publication in the AAS journal by Paul Bryans of HAO. In the past sungrazing comets have produced extreme ultraviolet emissions as they passed through the sun's corona.

Real Sun magnetic simulation
March 25, 2016

A paper was published today in Science by a team from the National Center for Atmospheric Research (NCAR), Chiba University in Japan, and the University of Tokyo. It is titled "Large-scale magnetic fields at high Reynolds numbers in magnetohydrodynamic simulations."

3D views of iso-surfaces
February 22, 2016

Fan and Fang's recent publication shows significant advances in global-scale fully dynamic 3D convective dynamo simulations of the solar convective envelope. These simulations demonstrate the role magnetic field plays in the self-consistent maintenance of the solar differential rotation.

HD30495 Figure 1
December 3, 2015

What might happen to the well-known 11-year solar cycle if the Sun were spun up to rotate more than two times faster? To investigate such questions of the dependence of the Sun's internal dynamo on parameters such as rotation we must look to other stars with different physical conditions.