HAO Research Highlights

Graphic depicting simulated vertical E x B drift velocity
July 1, 2020

We conducted numerical simulations to examine dayside thermosphere and ionosphere responses to concurrent solar flares and a geomagnetic storm during September 6th – September 11th, 2017, as well as the interplay of flare and storm effects.

Graphic image of Line Profiles of He I and He II Resonance Line
June 17, 2020

In the context of the solar atmosphere, we re-examine the role of of neutral and ionized species in dissipating the ordered energy of intermediate-mode MHD waves into heat.

Graphic image of the physics Of MHD Rossby Waves In The Sun
June 10, 2020

Evidence of the existence of hydrodynamic and MHD Rossby waves in the Sun is accumulating rapidly.

Graphic image of altitude (50-260 km) versus MJO phase depiction
June 10, 2020

Over the past two decades mounting evidence demonstrated that terrestrial weather significantly influences the dynamics and mean state of the thermosphere.

Graphic image of intensity and polarization data surrounding the current sheet formed on Sept 10 2017
June 2, 2020

Philip Judge states that the interpretation of emission lines formed in large astrophysical plasmas such as the solar atmosphere faces many challenges. Relatively simple line-ratio estimates of physical parameters, while appealing, are heavily laden with assumptions.