Solar Physics

Joan Burkepile Mentors Middle-School Girls for Over a Decade

Joan Burkepile leading STEM hands-on workshop

For over a decade, Joan Burkepile has participated in the STEM conference for middle school girls called “Expanding Your Horizons,” at CU Boulder. These one-day hands-on workshops are led by women professionals and are designed to be fun and exploratory.

Atomic Physics and Modern Solar Spectro-Polarimetry

Minimally processed Stokes spectra are shown for the 709.0 nm region
Tuesday, August 8, 2017

Observational solar physics is entering a new era with the advent of new 1.5 m class telescopes with adaptive optics, as well as the Daniel K. Inouye 4 m telescope which will become operational in 2019. Major outstanding problems in solar physics all relate to the solar magnetic field.

NOVA Highlights Sunrise Missions and Observations

Sunrise Balloon Launching

The March issue of NOVA features Sunrise, the scientific collaboration that twice launched the largest balloon-borne solar telescope to ever leave the Earth's surface. Launched from the Esrange Space Center in Kiruna, Sweden, it was carried aboard the HAO-developed gondola.

Rossby Waves On The Sun

Rossby waves on the Sun
Friday, April 14, 2017

Space weather forecasting capability is six decades behind terrestrial weather forecasting," you will often hear at gatherings of scientists determined to understand the connections between our star and our home on Earth. It is an accurate statement in terms of capability.

Energetic Particle Data for New Research

Delta II rocket launching the fifth GPS IIR(M) satellite

As part of the US National Space Weather Strategy and Action Plan, and following the 2016 Executive Order 13744, the Department of Defense (DoD) is now opening a more than 15-year record of GPS particle data to scientific scrutiny.

Egidio Landi Degl'Innocenti (1945–2017)

Prof. Egidio Landi Degl’Innocenti

On Sunday, February 12th, 2017, Prof. Egidio Landi Degl’Innocenti unexpectedly died of a heart attack in his home in Florence, Italy. Egidio had just returned from a scientific visit to the Instituto de Astrofísica de Canarias (IAC) in Spain, working with one of us (JTB).

On the Fine Structure Splitting of the 3p43d4D5/2 and 3p43d4D7/2 Levels of FE X

Raw S082B image with wavelength scale
Thursday, October 20, 2016

We study UV spectra obtained with the SO82-B slit spectrograph on board SKYLAB to estimate the fine structure splitting of the Cl-like 3p43d4D5/2 and 3p43d4D7/2 levels of Fe X.

Babcock-Leighton Solar Dynamo: The Role of Downward Pumping and the Equatorward Propagation of Activity

Snapshots of poloidal field
Monday, October 10, 2016

The key elements of the Babcock-Leighton dynamos are the generation of poloidal field through decay and dispersal of tilted bipolar active regions and the generation of toroidal field through the observed differential rotation.

Kevin Dalmasse and Space Weather Forcasting

Kevin Dalmasse is currently finishing a 2-year postdoc jointly funded by CISL and an Air Force grant from HAO Senior Scientist, Sarah Gibson.

HAO's Paul Bryans is featured in Science News

1999 total eclipse

On August 21, 2017, Paul Bryans and his team of scientists will be ready to aim a spectrometer at the sun during total eclipse in an effort to detect the effect of magnetism on certain wavelengths of infrared light emitted by the corona.


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