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Solar Cycle Variations in the Elemental Abundance of Helium and Fractionation of Iron in the Fast Solar Wind - Indicators of an Evolving Energetic Release of Mass from the Lower Solar Atmosphere
Scott W. McIntosh, Kandace K. Kiefer, Robert J. Leamon +2
We present and discuss the strong correspondence between evolution of the emission length scale in the lower transition region and in situ measurements of the fast solar wind compo…
The U.S. Eclipse Megamovie in 2017: a white paper on a unique outreach event
Hugh S. Hudson, Scott W. McIntosh, Shadia R. Habbal +2
Totality during the solar eclipse of 2017 traverses the entire breadth of the continental United States, from Oregon to South Carolina. It thus provides the opportunity to assemble…
Two components of the coronal emission revealed by EUV spectroscopic observations
Hui Tian, Scott W. McIntosh, Bart De Pontieu +3
Recent spectroscopic observations have revealed the ubiquitous presence of blueward asymmetries of emission lines formed in the solar corona and transition region. These asymmetrie…
Observation of High-speed Outflow on Plume-like Structures of the Quiet Sun and Coronal Holes with SDO/AIA
Hui Tian, Scott W. McIntosh, Shadia Rifal Habbal +1
Observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) reveal ubiquitous episodic outflows (jets) with an average speed around 120 km…
Observing Evolution in the Supergranular Length Scale During Periods of Low Solar Activity
Scott W. McIntosh, Robert J. Leamon, Rachel A. Hock +2
We present the initial results of an observational study into the variation of the dominant length-scale of quiet solar emission: supergranulation. This length-scale reflects the r…