ORCID Profile
0000-0002-5865-7924
Current Organisation
New Jersey Institute of Technology
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: American Astronomical Society
Date: 08-2022
Abstract: Recent studies suggest that the magnetic switchbacks (SBs) detected by the Parker Solar Probe carry information on the scales of solar supergranulation (large scale) and granulation (medium scale). We test this claim using high-resolution H α images obtained with the visible spectropolarimeters of the Goode Solar Telescope in Big Bear Solar Observatory. As possible solar sources, we count all the spicule-like features standing along the chromospheric networks near the coronal hole boundary visible in the H α blue-wing but absent in the red-wing images and measure the geometric parameters of dense sections of in idual flux tubes. Intervals between adjacent spicules located along the chromospheric networks are found in the range of 0.4–1.5 Mm (0.°03–0.°12) tending to be smaller than the medium scale of SBs. Interdistances between all pairs of the flux tubes are also counted and they appear in a single peak distribution around 0.7 Mm (0.°06) unlike the waiting-time distribution of SBs in a scale-free single power-law form. The length-to-diameter ratio of the dense section of flux tubes is as high as 6–40, similar to the aspect ratio of SBs. The number of spicules along a network can be as high as 40–100, consistent with numerous SBs within a patch. With these numbers, it is argued that the medium scale of SBs can be understood as an equilibrium distance resulting from a random walk within each erging magnetic field funnel connected to the chromospheric networks.
Publisher: American Astronomical Society
Date: 22-10-2014
Publisher: American Astronomical Society
Date: 31-07-2023
Publisher: American Astronomical Society
Date: 19-06-2017
Publisher: American Astronomical Society
Date: 31-07-2023
Location: United States of America
Location: United States of America
No related grants have been discovered for Jeongwoo Lee.