HAO Research Highlights

Kawakami diagrams for the linear polarization of the Ca II 8542 A line
July 26, 2018

The weak field approximation is a conceptually simple and computationally light method for inferring the magnetic field strength and its orientation in the Sun’s atmosphere.

An overview of interesting vantage points, highlighting previous extra-Sun-Earth-line (extra-SEL) missions
July 26, 2018

We explore new opportunities for solar physics that could be realized by future missions providing sustained observations from vantage points away from the Sun-Earth line.

The time evolution of height-dependent (a) electron density, (b) ionization rate, (c) Pedersen conductivity, and (d) Hall conductivity at MLT = 6 and magnetic latitude of 60
June 18, 2018

Stan Solomon et al, dicuss a new modeling capability that self-consistently couples physics-based magnetospheric 18 electron precipitation with its impact on the ionosphere, representing a significant improvement over previous models.

Change in WACCMX simulated total electron content (TEC) during a geomagnetic
June 18, 2018

Nicholas Pedatella notes that geomagnetic storms are an important driver of variability in Earth’s ionosphere, and can have significant societal impacts through the ionosphere’s impact on communications and navigation systems (e.g., GPS).

MLSO total eclipse, 1980 February 16, India
June 18, 2018

BC Low elaborates on the extraordinary sixty years of progress made to space observation of the Sun, solar wind, planets and their magnetospheres. He notes that space platforms complementing ground-based observatories have transformed solar physics.