Upcoming Events
Colloquium: Simulation of convective dynamo in solar convection zone: The role of small-scale magnetic fields - Feb 5, 2025
Colloquium: A delta-Omega Babcock-Leighton solar dynamo - Feb 12, 2025
Colloquium: Onset and Evolution of Joy’s Law - Feb 26, 2025
Latest News
Holly Gilbert awarded the 2025 Irene González Hernández Prize
HAO is proud to announce that our director, Holly Gilbert, is the recipient of the 2025 Irene González Hernández Prize. As quoted from the SPD website announcement..."The Irene González Hernández Prize, established in 2024, celebrates mid-career scientists for transformative contributions to solar research, leadership, and community service." Congratulations Holly!
Cutting-edge SPIn4D project combines AI and Astronomy
Matthias Rempel, et al. combine cutting-edge solar astronomy with advanced computer science to analyze data from the world’s largest ground-based solar telescope located atop Haleakalā, Maui. See featured story from the University of Hawaiʻi News. The team’s research recently published in Astrophysical Journal focuses on their development of deep learning models that rapidly analyze vast amounts of data from the U.S. National Science Foundation (NSF) Daniel K. Inouye Solar Telescope.
A Magnetohydrodynamic Mechanism for the Formation of Solar Polar Vortices
HAO scientist Mausumi Dikpati's recent significant publication entitled "A Magnetohydrodynamic Mechanism for the Formation of Solar Polar Vortices" is highlighted by NSF-NCAR news website. Dikpati and her co-authors report the first magnetohydrodynamic nonlinear simulations for the formation and evolution of solar polar vortices using a near-surface magnetohydrodynamic shallow-water model.
Latest Research Highlights
Image instabilities and polarization cross-talk
In this publication, Roberto Casini and Alfred de Wijn expand on their previous study of the impact of atmospheric seeing on polarization cross-talk, and show how the formalism that was developed in that work can be applied to treat the case of spatial modulators of polarization.
Transport of Nitric Oxide in the Winter Mesosphere and Lower Thermosphere
Han-Li Liu observes that nitric oxide (NO) is one of the most important cooling agent in the thermosphere and an important species for the energy balance of the upper atmosphere and the chemistry and dynamics of the middle atmosphere.
Impact of Upward Propagating Migrating Diurnal and Semidiurnal Tides on the Ionosphere-Thermosphere Seasonal Variation
N. M. Pedatella, K. Wu, L. Qian, and Q. Gan use WACCM-X to investigate the impact of the upward propagating migrating diurnal (DW1) and semidiurnal (SW2) tides on the seasonal variability in the ionosphere and thermosphere. The results demonstrate that the upward propagating DW1 and SW2 both have significant effects on the ionosphere and thermosphere, including influencing the seasonal variability.