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6 papers · 2 filters
Measurements of the Sun's High Latitude Meridional Circulation
Lisa Rightmire-Upton, David H. Hathaway, Katie Kosak
The meridional circulation at high latitudes is crucial to the build-up and reversal of the Sun's polar magnetic fields. Here we characterize the axisymmetric flows by applying a m…
Supergranules as Probes of the Sun's Meridional Circulation
David H. Hathaway
Recent analysis revealed that supergranules (convection cells seen at the Sun's surface) are advected by the zonal flows at depths equal to the widths of the cells themselves. Here…
A Systematic Survey of High Temperature Emission in Solar Active Regions
Harry P. Warren, Amy R. Winebarger, David H. Brooks
The recent analysis of observations taken with the EIS instrument on Hinode suggests that well constrained measurements of the temperature distribution in solar active regions can…
Can a Long Nanoflare Storm Explain the Observed Emission Measure Distributions in Active Region Cores?
Fana M. Mulu-Moore, Amy R. Winebarger, Harry P. Warren
All theories that attempt to explain the heating of the high temperature plasma observed in the solar corona are based on short bursts of energy. The intensities and velocities mea…
Behavior of Solar Cycles 23 and 24 Revealed by Microwave Observations
N. Gopalswamy, S. Yashiro, P. Mäkelä +3
Using magnetic and microwave butterfly diagrams, we compare the behavior of solar polar regions to show that (i) the polar magnetic field and the microwave brightness temperature d…
Supergranules as Probes of Solar Convection Zone Dynamics
David H. Hathaway
Supergranules are convection cells seen at the Sun's surface as a space filling pattern of horizontal flows. While typical supergranules have diameters of about 35 Mm, they exhibit…