HAO

NCAR High Altitude Observatory

DKIST: Solar Physics in Service of Society

Phil Judge, Claire Raftery, Sarah Jaeggli

Philip Judge, Senior Scientist at HAO, Claire Raftery, Director of Education and Outreach at NSO HQ in Boulder, and Sarah Jaeggli, Assistant Astronomer at the NSO's Daniel K Inouye Solar Observatory in Maui were guests on KGNU public radio in Boulder, CO.

Solar Energetic Particle Alerts from a Coronagraph

Space Weather Jan 2017 journal cover
Thursday, February 16, 2017

In this NASA-led study, we report the concept of using near-real time observations from a coronagraph to provide early warning of a fast coronal mass ejection (CME) and the possible onset of a solar energetic particle (SEP) event.

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).

Rosa Wallace receives the 2017 Chambliss Medal

Rosa Wallace

Rosa Wallace received the 2017 Chambliss Astronomy Achievement Student Award, which recognizes exemplary research by undergraduate and graduate students who present posters at meetings of the American Astronomical Society (AAS).

The Physical Origin and Magnetic Sensitivity of the Scattering Polarization Observed in the O I IR Triplet at 777 nm

Response functions to a horizontal 1 G magnetic field of the emergent Q linear scattering polarization
Monday, January 9, 2017

The linearly polarized solar limb spectrum caused by the absorption and scattering of anisotropic radiation has a very rich diagnostic potential, given its sensitivity to the thermal, dynamic and magnetic structure of the solar atmosphere.

A Theoretical Study of the Build-up of the Sun's Polar Magnetic Field by Using a 3D Kinematic Dynamo Model

Time evolution of two bipolar magnetic regions (BMRs)
Monday, January 9, 2017

We develop a three-dimensional kinematic self-sustaining model of the solar dynamo in which the poloidal field generation is from tilted bipolar sunspot pairs placed on the solar surface above regions of strong toroidal field by using the SpotMaker algorithm and then the transport of this poloida

The GLobal airglOW Model

The GLobal airglOW model, also known as GLOW, is a toolkit of subroutines and driver programs for performing calculations of optical emissions in the upper atmosphere, particularly the thermosphere and ionosphere, above about 100 km altitude.

The GLobal airglOW Model

The GLobal airglOW model, also known as GLOW, is a toolkit of subroutines and driver programs for performing calculations of optical emissions in the upper atmosphere, particularly the thermosphere and ionosphere, above about 100 km altitude.

Mausumi Dikpati Receives 2017 Wenner-Gren guest professorship award

Mausumi Dikpati portrait

Mausumi Dikpati of HAO has won a 2017 Wenner-Gren guest professorship award of Stockholm. This prestigious award is given annually to 6–8 scientists worldwide from all areas of science. About 30–50 scientists get nominated each year.

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