HAO Research Highlights

Graphic image of H+ band Electromagnetic Ion Cyclotron (EMIC) waves diagram
April 24, 2020

A recent statistical study has suggested that not all electromagnetic ion cyclotron (EMIC) waves can scatter relativistic electrons. However, knowledge of the factors that influence the EMIC wave scattering efficiency is still limited in observations.

Fully processed image of the corona generated by stacking many co-aligned, calibrated images
April 14, 2020

NASA's WB-57 High Altitude Research Program provides a deployable, mobile, stratospheric platform for scientic research.

Graphic image of opposite polarity magnetic fields
March 31, 2020

Recent numerical simulations and observations of sunspots show a significant amount of opposite polarity magnetic fields within the sunspot penumbra. Most of the opposite polarity fields are associated with convective downflows.

Graph depicting temperature of cavities and surrounding streamers
March 31, 2020

We have analyzed 33 cavities observed between 2012 and 2018, from solar activity maximum to minimum. For each cavity we applied a differential emission measure method to obtain both a temperature distribution and a value of the average temperature.

Graph depicting solar magnetic weather
March 31, 2020

Rossby waves arise in thin layers within fluid regions of stars and planets. These global wave-like patterns occur due to the variation in Coriolis forces with latitude. In the past several years observational evidence has indicated that there are also Rossby waves in the Sun.